Fast Data Transfer

I want to make an online multiplayer pong game. I want the
user to be able to play against a different user on a different
network. How could I transfer the data of one player to the other?
When one player moves his paddle left, I need somehow to let the
other user's computer know that pretty fast so they have the same
game play. I thought about using a text file. When a player moves
left, it will write left on a text file and upload it to my server.
Then the other computer will download the text file. If it says
left, he will move the opponent left. If the text file says right
it will move the opponent right. But I think this is a very slow
process and their game will pretty much not be the same. How could
I do this so that they get the data fast?
Thanks,
Dor

DorKauf schrieb:
> does anyone know the answer?
I did, but the public newsservers don't seem to relay answers
back to
Macromedia's newsserver, so here is the answer again:
You may want the players flash movies to do a direct IP
communication,
so your server will only have to relay the opponents IP once.
Best regards,
Martin

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I bought a new iMac today. I'm using migration assistant to move all my software, but the time just keeps getting longer. It says connect an Ethernet cable for faster data transfer. I did, but that doesn't seem to help. Any ideas?

I bought a new iMac today. I'm using migration assistant to move all my software, but the time just keeps getting longer. It says connect an Ethernet cable for faster data transfer. I did, but that doesn't seem to help. Any ideas?

m1doc,
Are you migrating from a Mac or a MS Window machine? Either way you probably should be in touch with AppleCare, you have 90 days of free AppleCare telephone support. They can usually help on issues like this. If you don't know the phone number please use http://support.apple.com/kb/HE57 to help find the number in your country.

Very slow network directory listing - but fast data transfer speed once listed?

Hello,
I have really tried to sort this myself before opening up to the community, however I have run out of ideas, and hope someone can offer the magic solution I have missed.
I am currently using the 3.4ghz i7 iMac on a 1GB LAN, running OSX10.7.2 - connecting to a Windows Server 2008 (Running Release 2) over ethernet.
If i go to a network directory that i haven't recently accessed it can take up to 60 seconds to show the contents of that directory. Once i have accessed that folder, if i come out of it and go back in it will be instant again - but the first time it lists the directory it looks like i have opened an empty folder - which after anything from 10seconds to 1 minute will suddenly show the files that are there.
Internet connectivity is fast through the network, and file transfers across the LAN are fast. (showing as approx 300mb per second) I can play and edit HD content across the network with no slowdown so I am confident that this issue is not related to the network speed itself, and is more to do with a setting on this mac.
Symptoms are very similar to this post: https://discussions.apple.com/message/12245148?messageID=12245148&amp%3b#1224514 8 - however i understand that in OSX Lion - SMB was removed - so i cannot find this file to edit.
I have tried bypassing additional hubs in the network by wiring direct cables to the switch that is connected to the file server, this made no difference.
I have also tried disconnecting the ethernet cable, and running over wifi. This fixes the listing problem, but when editing HD content over a network drive, this connection is not fast enough to carry the data without interruption (some projects are linked to up to 900gb of hd video content!)
Using ethernet, I have tried DHCP, DHCP with manual address, and manual mode. All reproduce this problem. i have tried using the windows workgroup, and tried without it.
I have also followed this suggestion: https://discussions.apple.com/thread/2134936?threadID=2134936&tstart=45 and used OpenDNS. this did not fix the issue.
For argument sake, I have also just tested a Macbook Pro running Snow Leopard to see if it was OS related. This reproduces the exact same problem, near instant directory listing on the wifi, a long and arduous wait on ethernet.
I cannot work out why directory listing is instant over wifi, but not over ethernet on 2 different macs, running 2 different versions of OSX. I also do not understand why if the network is having trouble listing the directories - the data transfer speed is 300mbps when i copy files across the wired network from the file server to the mac.
Does anyone have any other ideas as to what could be the problem here? We are about to start work on a very large project, where the content we are editing is spread out across around 200 different network folders (different shoots captured over the past 2 years). We really don't have the time to wait 60 seconds each time we need to access one of those directories to look for a file, and I am very close to pulling all my hair out!
I really look forward to hearing from anyone who can offer any insight.

If you are suspecting that the Windows update had something to do with your LAN going slow, then try the following:
1. Look for updates for your clients LAN NIC driver; or
2. Un-install the updates.

Fast Data Transfer over Internet

Hello friends:
i need your help to transfer Data.
i have few servers and some of them are really stuffed with huge amount of data on them.
i want to move my data to other servers.
i dont have a telnet access and more ever i dont want to remain connnected till the time the task is over.
can you recommend a faster way of Data transfer over internet.
awaiting your reply.
regards

Why don't you dump the data to a tape, send the tape to the other server, and reload it there? That can be faster than sending the data over the network if it's large.

Fast data transfer out of PXIe-8133?

Hi,
What is the fastest way to transfer data out from the PXIe-8133? I am currently using two UDP ports for the two ethernet ports with gives a theoretical transfer rate of 2Gbit/s.
How would I transfer data out from an FPGA or PXIe to a host computer faster than that?
Cheers.
Solved!
Go to Solution.

Hi u436,
The only faster way to transfer data to a computer would be with a x4 or x16 MXI-Express Remote Controller, which would provide up to 838 MB/s or 5.6 GB/s respectively. These would need to be installed in place of your PXIe-8133 and be controlled by the MXI card on your PC. Also note that the x16 MXI-Express card is not supported by all PCs; it requires full PCI Express 2.0 clocking specs.
NI PXIe-PCIe8375: http://sine.ni.com/nips/cds/view/p/lang/en/nid/207823
NI PXIe-PCIe8388 and NI PXIe-PCIe8389: http://sine.ni.com/nips/cds/view/p/lang/en/nid/209710
Other than that I am not aware of a faster way of exporting data to a PC(s) in real time. Hope this helps!
Brian
Brian G.

RT - How can I make data transfer to host faster?

Hi
I have created a program that acquires data on FPGA then transfers them to RT so RT can send them up to the windows host once UI is connected.
The program is based on message type structure as in NI's examples.
However, I have one problem the data to windows host is not transferred fast enough.
Pic1 shows the offending bit of code and FPGA.png what's hiding in the subVi.
FPGA is meant to acquire to cycles of a sine wave. In this case it approximately 40 ms of data at 25us sampling rate (40kS/s 8 channels). Later the data is sent to the host. As you can see I have a dedicated stream for data only and a different one for message passing.
If I disable the code in the case structure this loop executes in 39-40 ms, however when I start sending the data to the host the rate drops to 57-60 ms per iteration and that sooner or later leads to buffer overflow.
I have experimented with passing the acquired data to a different loop using a queue but that wasn't faster. I have also tried pipelining but that did not speed it up either. Would you have any suggestions how I could improve my transfer rates?
Thank you.
Bartosz
Attachments:
Pic1.png ‏100 KB
FPGA.png ‏75 KB

Hi barteklul,
There are 2 main methods of achieving fast data transfer between RT and Host PC:
1. Using the "Shared Variables", they allow you to transfer data deterministically from
RT to Host PC, usually are used to monitor data.
Please have a look at this article:
http://zone.ni.com/reference/en-XX/help/370622J-01/lvrtconcepts/rt_projectvariable/
This is the example code:
https://decibel.ni.com/content/docs/DOC-15928
The only disadvantage of such method is that if for example RT gets data really fast
your Host PC can miss some samples.
2. In order to receive all data from RT
(guaranteed 100% data transfer without missing any samples) "Network Streams" should be used.
It is a little bit more complex to implement, but if you want to store data to the file "Network Streams"
are strongly suggested. In addition "Network Streams" are not deterministic.
For more details about network streams please read this article:
http://www.ni.com/white-paper/12267/en/
At the moment I see that you are using "Network Streams" to transfer data and also I can see that you have some timing on RT
which can slow down the data transfer rate. I suggest you to transfer data to Host PC as soon as it comes into the FIFO.
Also if you transfer data just to monitor it, I suggest you to try Shared Variables method.
I hope that you will this information useful!
Kind Regards,
Max
Applications Engineer
National Instruments

Error 33172 occurred at Read & Write data transfer between two or more PF2010 controller

Hi,i need to do data transfer between two or more FP2010 controller.e.g. FP2010(A) & FP2010(B).
FP2010(A) need to transfer the measurement (from its I/O module) to FP2010(B) to do the data analysis.These data transfer should be synchronous btw two controller to prevent data lost.
From the vi used in the attachment,i encountered some problems at:
(1) Error 33172 occurred while publishing the data.Can i create and publish data under different item name?
(2) How to synchronies the read & write btw contorller?
All controller are communicating with each other directly without the need of a host computer to link them together
Is there any other method to do fast data transfer betwe
en controller?

Hi YongNei,
You were succesful in omiting enough information to make it very difficult to answer!
Please post your example.
Please tell us what version of LV-RT you are using.
Please define what you concider "fast data transfer".
Have you concidered mapping the FP tags of FP2010(A) to FP2010(B) and vise versa?
WHat exactly has to be syncronized?
If you have something that is close to working, share that.
Well, that as far as I can go with the info you have provided. Depending on the details, what you are asking could be anything from trivial to impossible with the currently available technology. I just can't say.
It would probably be a good idea to start over with a fresh question (sorry) because not many people are going to know what a a "
PF2010" is and I can not guarentee that I will be able to get back to you personally until next week-end.
Trying to help you get an answer,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Difference in data transfer rates between winXP and Linux server?

Hello all,
I am using a winXP laptop to act as my server (all usb external hard drives are connected to it) but the data transfer rates can be really slow. Is Linux faster in that regard? Can a Linux based server provide faster data transfer rates?
Thanks for any help.
Bmora96

Linux cannot make hardware go any faster - so if WinXP and its drivers are making optimal use of those USB drives and the USB data transfer pipe, Linux will not make it faster. (but installing Linux and going Tux are always excellent ideas that need no real reason either ;-) )
Real question you should be asking is if using a notebook in a server role is wise thing to do?

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Hi
I am crazily searching best super fast data transfer dock station? I was wondering if I could get Thunderbolt Firewie USB 3 USB 2 all together in 1 machine. Just now I saw only Belkin is going to announce it's dock station but it's really late for me. Could anyone advise me MATROX DS1 is good? Any other brand anybody know? Please response!?

I only know of the Belkin and the Matrox - and don't know if either is shipping. The Belkin looks far more attractive to me, but they only know when it will actually ship (last report I heard was 1st quarter 2013).
Clinton

Faster ethernet data transfer time than 2ms

Dear all,
I'm using labview 7.1 based on a standard laptop communicating with a LabVIEW real time maching running the standard real time operating system. The two machines are connected through a dedication ethernet switch (rated to 1Gbs), and both have ethernet cards (rated at 100Mbs or greater).
The aim of my project is to have a fast distributed control scheme going. This basically means that small amounts of sensor data have to be transferred very quickly between the two machines. The aim is to then scale this to have more machines on the network.
I use a UDP data transfer method, using the standard labview UDP read and UDP write vis.
I would like to acheive a major frame rate of around 500Hz. The problem I have restricting me with this is the speed of the ethernet connection. It would appear that the vi wrtes to buffer instantaneously, but it is taking as much as 2-3ms for the data package to be sent and received by the other machine. This is a ridiculously long amount of time. I'm sending approximately 100bytes, so the time on the network should be 0.01ms. This would suggest the time delay is in the reading or writing of the data from the Ethernet card over the PCI bus to the program.
Does anyone know why its taking so long? Do the UDP read vis only check the ethernet hardware every ms? I've taken great care to ensure that this is not a synchronisation or timing problem and I am certain it is not that.
I could really do with making this data transfer quicker as it is clearly the slowest part of the control loop. If anyone has come across this before and found a solution I would be grateful to know about it. I'm really hoping that I won't have to write something low-level in C or anything like that and try and integrate it with the code I have.
Many thanks,
Pete

Finally found some hard numbers for data transfer rates. From this website. http://www.intellicom.se/ModbusTCP_overview.shtml
Performance from a MODBUS TCP/IP system
The performance basically depends on the network and the hardware. If you are running MODBUS® TCP/IP over the Internet, you won't get better than typical Internet response times. However, for communicating for debug and maintenance purposes, this may be perfectly adequate and save you from having to catch a plane or go to site on a Sunday morning!
For a high-performance Intranet with high-speed Ethernet switches to guarantee performance, the situation is completely different.
In theory MODBUS® TCP/IP carries data at up to 250/(250+70+70) or about 60% efficiency when transferring registers in bulk, and since 10 Base T Ethernet carries about 1.25 Mbytes/sec raw, the theoretical throughput is:
1.25M / 2 * 60% = 360000 registers per second and the 100 Base T speed is 10 x greater.
This assumes that you are using devices that can service Ethernet as fast as bandwidth is available.
Practical tests carried out by Schneider Automation using a MOMENTUMTM Ethernet PLC with Ethernet I/O demonstrated that up to 4000 I/O bases could be scanned per second, each I/O base having up to 16 12-bit analog I/O or 32 discrete I/O. Four bases could be updated in one millisecond. While this is below the theoretical limit calculated above, it must be remembered that the tested device was running with a lowly 80186 CPU running at 50Mhertz with an effective computing power of 3 MIPS (compared to the 700 MIPS of a 500MHz Pentium). Also, these results are nevertheless faster than the proprietary I/O scan methods used to date.
As low-end CPU's get cheaper, Momentum-type devices will chase the theoretical limit, although they'll never reach it because the limit will be continually pushed further away with 1 Gigabit Ethernet, 10 Gigabit Ethernet, etc. This is in contrast to other field-buses which are inherently stuck at one speed

How to find the max data transfer rate(disk speed) supported by mobo?

I plan on replacing my current HDD with a new and bigger HDD.
For this I need to know the max data transfer rate(disk speed) that my mobo will support. However, dmidecode is not telling me that. Am I missing something?
Here's dmidecode:
# dmidecode 2.11
SMBIOS 2.5 present.
80 structures occupying 2858 bytes.
Table at 0x000F0450.
Handle 0xDA00, DMI type 218, 101 bytes
OEM-specific Type
Header and Data:
DA 65 00 DA B2 00 17 4B 0E 38 00 00 80 00 80 01
00 02 80 02 80 01 00 00 A0 00 A0 01 00 58 00 58
00 01 00 59 00 59 00 01 00 75 01 75 01 01 00 76
01 76 01 01 00 05 80 05 80 01 00 D1 01 19 00 01
00 15 02 19 00 02 00 1B 00 19 00 03 00 19 00 19
00 00 00 4A 02 4A 02 01 00 0C 80 0C 80 01 00 FF
FF 00 00 00 00
Handle 0xDA01, DMI type 218, 35 bytes
OEM-specific Type
Header and Data:
DA 23 01 DA B2 00 17 4B 0E 38 00 10 F5 10 F5 00
00 11 F5 11 F5 00 00 12 F5 12 F5 00 00 FF FF 00
00 00 00
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: Dell Inc.
Version: A17
Release Date: 04/06/2010
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 4096 kB
Characteristics:
PCI is supported
PNP is supported
APM is supported
BIOS is upgradeable
BIOS shadowing is allowed
ESCD support is available
Boot from CD is supported
Selectable boot is supported
EDD is supported
Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
3.5"/720 kB floppy services are supported (int 13h)
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
ACPI is supported
USB legacy is supported
BIOS boot specification is supported
Function key-initiated network boot is supported
Targeted content distribution is supported
BIOS Revision: 17.0
Handle 0x0100, DMI type 1, 27 bytes
System Information
Manufacturer: Dell Inc.
Product Name: OptiPlex 755
Version: Not Specified
UUID: 44454C4C-5900-1050-8033-C4C04F434731
Wake-up Type: Power Switch
SKU Number: Not Specified
Family: Not Specified
Handle 0x0200, DMI type 2, 8 bytes
Base Board Information
Manufacturer: Dell Inc.
Product Name: 0PU052
Version:
Handle 0x0300, DMI type 3, 13 bytes
Chassis Information
Manufacturer: Dell Inc.
Type: Space-saving
Lock: Not Present
Version: Not Specified
Asset Tag:
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Safe
Security Status: None
Handle 0x0400, DMI type 4, 40 bytes
Processor Information
Socket Designation: CPU
Type: Central Processor
Family: Xeon
Manufacturer: Intel
ID: 76 06 01 00 FF FB EB BF
Signature: Type 0, Family 6, Model 23, Stepping 6
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Not Specified
Voltage: 0.0 V
External Clock: 1333 MHz
Max Speed: 5200 MHz
Current Speed: 2666 MHz
Status: Populated, Enabled
Upgrade: Socket LGA775
L1 Cache Handle: 0x0700
L2 Cache Handle: 0x0701
L3 Cache Handle: Not Provided
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
Core Count: 2
Core Enabled: 2
Thread Count: 2
Characteristics:
64-bit capable
Handle 0x0700, DMI type 7, 19 bytes
Cache Information
Socket Designation: Not Specified
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 32 kB
Maximum Size: 32 kB
Supported SRAM Types:
Other
Installed SRAM Type: Other
Speed: Unknown
Error Correction Type: None
System Type: Data
Associativity: 8-way Set-associative
Handle 0x0701, DMI type 7, 19 bytes
Cache Information
Socket Designation: Not Specified
Configuration: Enabled, Not Socketed, Level 2
Operational Mode: Varies With Memory Address
Location: Internal
Installed Size: 6144 kB
Maximum Size: 6144 kB
Supported SRAM Types:
Other
Installed SRAM Type: Other
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Unified
Associativity: <OUT OF SPEC>
Handle 0x0800, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: PARALLEL
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: DB-25 female
Port Type: Parallel Port PS/2
Handle 0x0801, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: SERIAL1
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: DB-9 male
Port Type: Serial Port 16550A Compatible
Handle 0x0802, DMI type 126, 9 bytes
Inactive
Handle 0x0803, DMI type 126, 9 bytes
Inactive
Handle 0x0804, DMI type 126, 9 bytes
Inactive
Handle 0x0805, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB1
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0806, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB2
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0807, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB3
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0808, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB4
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0809, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB5
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x080A, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB6
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x080B, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB7
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x080C, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: USB8
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x080D, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: ENET
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: RJ-45
Port Type: Network Port
Handle 0x080E, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: MIC
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x080F, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: LINE-OUT
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0810, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: LINE-IN
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0811, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: HP-OUT
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: Mini Jack (headphones)
Port Type: Audio Port
Handle 0x0812, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: MONITOR
Internal Connector Type: None
External Reference Designator: Not Specified
External Connector Type: DB-15 female
Port Type: Video Port
Handle 0x090A, DMI type 9, 13 bytes
System Slot Information
Designation: SLOT1
Type: x1 Proprietary
Current Usage: In Use
Length: Long
Characteristics:
PME signal is supported
Handle 0x0901, DMI type 126, 13 bytes
Inactive
Handle 0x0902, DMI type 9, 13 bytes
System Slot Information
Designation: SLOT2
Type: 32-bit PCI
Current Usage: Available
Length: Long
ID: 2
Characteristics:
5.0 V is provided
3.3 V is provided
PME signal is supported
Handle 0x0903, DMI type 126, 13 bytes
Inactive
Handle 0x0904, DMI type 126, 13 bytes
Inactive
Handle 0x0905, DMI type 126, 13 bytes
Inactive
Handle 0x0906, DMI type 126, 13 bytes
Inactive
Handle 0x0907, DMI type 126, 13 bytes
Inactive
Handle 0x0908, DMI type 126, 13 bytes
Inactive
Handle 0x0A00, DMI type 10, 6 bytes
On Board Device Information
Type: Video
Status: Disabled
Description: Intel Graphics Media Accelerator 950
Handle 0x0A02, DMI type 10, 6 bytes
On Board Device Information
Type: Ethernet
Status: Enabled
Description: Intel Gigabit Ethernet Controller
Handle 0x0A03, DMI type 10, 6 bytes
On Board Device Information
Type: Sound
Status: Enabled
Description: Intel(R) High Definition Audio Controller
Handle 0x0B00, DMI type 11, 5 bytes
OEM Strings
String 1: www.dell.com
Handle 0x0D00, DMI type 13, 22 bytes
BIOS Language Information
Language Description Format: Long
Installable Languages: 1
en|US|iso8859-1
Currently Installed Language: en|US|iso8859-1
Handle 0x0F00, DMI type 15, 29 bytes
System Event Log
Area Length: 2049 bytes
Header Start Offset: 0x0000
Header Length: 16 bytes
Data Start Offset: 0x0010
Access Method: Memory-mapped physical 32-bit address
Access Address: 0xFFF01000
Status: Valid, Not Full
Change Token: 0x00000018
Header Format: Type 1
Supported Log Type Descriptors: 3
Descriptor 1: POST error
Data Format 1: POST results bitmap
Descriptor 2: System limit exceeded
Data Format 2: System management
Descriptor 3: Log area reset/cleared
Data Format 3: None
Handle 0x1000, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 8 GB
Error Information Handle: Not Provided
Number Of Devices: 4
Handle 0x1100, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: DIMM
Set: None
Locator: DIMM_1
Bank Locator: Not Specified
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Manufacturer: AD00000000000000
Handle 0x1101, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: DIMM
Set: None
Locator: DIMM_3
Bank Locator: Not Specified
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Handle 0x1102, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: DIMM
Set: None
Locator: DIMM_2
Bank Locator: Not Specified
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Handle 0x1103, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: DIMM
Set: None
Locator: DIMM_4
Bank Locator: Not Specified
Type: DDR2
Type Detail: Synchronous
Speed: 667 MHz
Handle 0x1300, DMI type 19, 15 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x000FDFFFFFF
Range Size: 4064 MB
Physical Array Handle: 0x1000
Partition Width: 1
Handle 0x1400, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0007FFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x1100
Memory Array Mapped Address Handle: 0x1300
Partition Row Position: 1
Interleave Position: 1
Interleaved Data Depth: 1
Handle 0x1401, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00080000000
Ending Address: 0x000FDFFFFFF
Range Size: 2016 MB
Physical Device Handle: 0x1101
Memory Array Mapped Address Handle: 0x1300
Partition Row Position: 1
Interleave Position: 1
Interleaved Data Depth: 1
Handle 0x1402, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0007FFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x1102
Memory Array Mapped Address Handle: 0x1300
Partition Row Position: 1
Interleave Position: 2
Interleaved Data Depth: 1
Handle 0x1403, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00080000000
Ending Address: 0x000FDFFFFFF
Range Size: 2016 MB
Physical Device Handle: 0x1103
Memory Array Mapped Address Handle: 0x1300
Partition Row Position: 1
Interleave Position: 2
Interleaved Data Depth: 1
Handle 0x1410, DMI type 126, 19 bytes
Inactive
Handle 0x1800, DMI type 24, 5 bytes
Hardware Security
Power-On Password Status: Enabled
Keyboard Password Status: Not Implemented
Administrator Password Status: Enabled
Front Panel Reset Status: Not Implemented
Handle 0x1900, DMI type 25, 9 bytes
System Power Controls
Next Scheduled Power-on: *-* 00:00:00
Handle 0x1B10, DMI type 27, 12 bytes
Cooling Device
Type: Fan
Status: OK
OEM-specific Information: 0x0000DD00
Handle 0x1B11, DMI type 27, 12 bytes
Cooling Device
Type: Fan
Status: OK
OEM-specific Information: 0x0000DD01
Handle 0x1B12, DMI type 126, 12 bytes
Inactive
Handle 0x1B13, DMI type 126, 12 bytes
Inactive
Handle 0x1B14, DMI type 126, 12 bytes
Inactive
Handle 0x2000, DMI type 32, 11 bytes
System Boot Information
Status: No errors detected
Handle 0x8100, DMI type 129, 8 bytes
OEM-specific Type
Header and Data:
81 08 00 81 01 01 02 01
Strings:
Intel_ASF
Intel_ASF_001
Handle 0x8200, DMI type 130, 20 bytes
OEM-specific Type
Header and Data:
82 14 00 82 24 41 4D 54 01 01 00 00 01 A5 0B 02
00 00 00 00
Handle 0x8300, DMI type 131, 64 bytes
OEM-specific Type
Header and Data:
83 40 00 83 14 00 00 00 00 00 C0 29 05 00 00 00
F8 00 4E 24 00 00 00 00 0D 00 00 00 02 00 03 00
19 04 14 00 01 00 01 02 C8 00 BD 10 00 00 00 00
00 00 00 00 FF 00 00 00 00 00 00 00 00 00 00 00
Handle 0x8800, DMI type 136, 6 bytes
OEM-specific Type
Header and Data:
88 06 00 88 5A 5A
Handle 0xD000, DMI type 208, 10 bytes
OEM-specific Type
Header and Data:
D0 0A 00 D0 01 03 FE 00 11 02
Handle 0xD100, DMI type 209, 12 bytes
OEM-specific Type
Header and Data:
D1 0C 00 D1 78 03 07 03 04 0F 80 05
Handle 0xD200, DMI type 210, 12 bytes
OEM-specific Type
Header and Data:
D2 0C 00 D2 F8 03 04 03 06 80 04 05
Handle 0xD201, DMI type 126, 12 bytes
Inactive
Handle 0xD400, DMI type 212, 242 bytes
OEM-specific Type
Header and Data:
D4 F2 00 D4 70 00 71 00 00 10 2D 2E 42 00 11 FE
01 43 00 11 FE 00 0F 00 25 FC 00 10 00 25 FC 01
11 00 25 FC 02 12 00 25 FC 03 00 00 25 F3 00 00
00 25 F3 04 00 00 25 F3 08 00 00 25 F3 0C 07 00
23 8F 00 08 00 23 F3 00 09 00 23 F3 04 0A 00 23
F3 08 0B 00 23 8F 10 0C 00 23 8F 20 0E 00 23 8F
30 0D 00 23 8C 40 A6 00 23 8C 41 A7 00 23 8C 42
05 01 22 FD 02 06 01 22 FD 00 8C 00 22 FE 00 8D
00 22 FE 01 9B 00 25 3F 40 9C 00 25 3F 00 09 01
25 3F 80 A1 00 26 F3 00 A2 00 26 F3 08 A3 00 26
F3 04 9F 00 26 FD 02 A0 00 26 FD 00 9D 00 11 FB
04 9E 00 11 FB 00 54 01 23 7F 00 55 01 23 7F 80
5C 00 78 BF 40 5D 00 78 BF 00 04 80 78 F5 0A 01
A0 78 F5 00 93 00 7B 7F 80 94 00 7B 7F 00 8A 00
37 DF 20 8B 00 37 DF 00 03 C0 67 00 05 FF FF 00
00 00
Handle 0xD401, DMI type 212, 172 bytes
OEM-specific Type
Header and Data:
D4 AC 01 D4 70 00 71 00 03 40 59 6D 2D 00 59 FC
02 2E 00 59 FC 00 6E 00 59 FC 01 E0 01 59 FC 03
28 00 59 3F 00 29 00 59 3F 40 2A 00 59 3F 80 2B
00 5A 00 00 2C 00 5B 00 00 55 00 59 F3 00 6D 00
59 F3 04 8E 00 59 F3 08 8F 00 59 F3 00 00 00 55
FB 04 00 00 55 FB 00 23 00 55 7F 00 22 00 55 7F
80 F5 00 58 BF 40 F6 00 58 BF 00 EB 00 55 FE 00
EA 00 55 FE 01 40 01 54 EF 00 41 01 54 EF 10 ED
00 54 F7 00 F0 00 54 F7 08 4A 01 53 DF 00 4B 01
53 DF 20 4C 01 53 7F 00 4D 01 53 7F 80 68 01 56
BF 00 69 01 56 BF 40 FF FF 00 00 00
Handle 0xD402, DMI type 212, 152 bytes
OEM-specific Type
Header and Data:
D4 98 02 D4 70 00 71 00 00 10 2D 2E 2D 01 21 FE
01 2E 01 21 FE 00 97 00 22 FB 00 98 00 22 FB 04
90 00 11 CF 00 91 00 11 CF 20 92 00 11 CF 10 E2
00 27 7F 00 E3 00 27 7F 80 E4 00 27 BF 00 E5 00
27 BF 40 D1 00 22 7F 80 D2 00 22 7F 00 45 01 22
BF 40 44 01 22 BF 00 36 01 21 F1 06 37 01 21 F1
02 38 01 21 F1 00 39 01 21 F1 04 2B 01 11 7F 80
2C 01 11 7F 00 4E 01 65 CF 00 4F 01 65 CF 10 D4
01 65 F3 00 D5 01 65 F3 04 D2 01 65 FC 00 D3 01
65 FC 01 FF FF 00 00 00
Handle 0xD403, DMI type 212, 157 bytes
OEM-specific Type
Header and Data:
D4 9D 03 D4 70 00 71 00 03 40 59 6D 17 01 52 FE
00 18 01 52 FE 01 19 01 52 FB 00 1A 01 52 FB 04
1B 01 52 FD 00 1C 01 52 FD 02 1D 01 52 F7 00 1E
01 52 F7 08 1F 01 52 EF 00 20 01 52 EF 10 21 01
52 BF 00 22 01 52 BF 40 87 00 59 DF 20 88 00 59
DF 00 E8 01 66 FD 00 E9 01 66 FD 02 02 02 53 BF
00 03 02 53 BF 40 04 02 53 EF 00 05 02 53 EF 10
06 02 66 DF 00 07 02 66 DF 20 08 02 66 EF 00 09
02 66 EF 10 17 02 66 F7 00 18 02 66 F7 08 44 02
52 BF 40 45 02 52 BF 00 FF FF 00 00 00
Handle 0xD800, DMI type 126, 9 bytes
Inactive
Handle 0xDD00, DMI type 221, 19 bytes
OEM-specific Type
Header and Data:
DD 13 00 DD 00 01 00 00 00 10 F5 00 00 00 00 00
00 00 00
Handle 0xDD01, DMI type 221, 19 bytes
OEM-specific Type
Header and Data:
DD 13 01 DD 00 01 00 00 00 11 F5 00 00 00 00 00
00 00 00
Handle 0xDD02, DMI type 221, 19 bytes
OEM-specific Type
Header and Data:
DD 13 02 DD 00 01 00 00 00 12 F5 00 00 00 00 00
00 00 00
Handle 0xDE00, DMI type 222, 16 bytes
OEM-specific Type
Header and Data:
DE 10 00 DE C1 0B 00 00 10 05 19 21 01 00 00 01
Handle 0x7F00, DMI type 127, 4 bytes
End Of Table
Hdparm also does not tell me the max data transfer rate (disk speed) of my current drive although this link : www.wdc.com/en/library/sata/2879-001146.pdf says that it is 3.0Gb/s
and here's hdparm -I /dev/sda
/dev/sda:
ATA device, with non-removable media
Model Number: WDC WD800JD-75JNC0
Firmware Revision: 06.01C06
Standards:
Supported: 6 5 4
Likely used: 8
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
CHS current addressable sectors: 16514064
LBA user addressable sectors: 156250000
Logical/Physical Sector size: 512 bytes
device size with M = 1024*1024: 76293 MBytes
device size with M = 1000*1000: 80000 MBytes (80 GB)
cache/buffer size = 8192 KBytes
Capabilities:
LBA, IORDY(can be disabled)
Standby timer values: spec'd by Standard, with device specific minimum
R/W multiple sector transfer: Max = 16 Current = 8
Recommended acoustic management value: 128, current value: 254
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* DOWNLOAD_MICROCODE
SET_MAX security extension
Automatic Acoustic Management feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* SMART error logging
* SMART self-test
* Gen1 signaling speed (1.5Gb/s)
* Host-initiated interface power management
* SMART Command Transport (SCT) feature set
* SCT Long Sector Access (AC1)
* SCT LBA Segment Access (AC2)
* SCT Error Recovery Control (AC3)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
Security:
Master password revision code = 65534
supported
not enabled
not locked
frozen
not expired: security count
not supported: enhanced erase
Checksum: correct
Last edited by Inxsible (2011-03-27 04:40:49)

I just checked my BIOS and my current setting is set at IDE although it also mentions that the default should be AHCI. Currently I have a dual boot of Windows 7 (need it for Tax software) and Arch
So I guess, when I get the new HDD, I will first set it to AHCI and then install the OSes on it. See if NCQ helps any, and if not I will turn it back and re-install (if I have to). I am planning to have Windows only in virtualbox in the new drive.
Anyhoo, while I was in the BIOS I found two things which I had questions about :
1) Under Onboard Devices --> Integrated NIC , my setting is currently set at "On w/PXE" and it says the default should be just "On". Would it be ok to change it back to On since its a single machine and its not booting an OS on any server. I just don't want to have to re-install anything now since I will be doing that in the new HDD.
2) How would I know whether my BIOS would support a 64 bit OS in Virtualbox? I checked some setting under Virtualization, but they weren't very clear.
I will edit this post and let you know exactly what settings were present under the Virtualization sub-section.

Bottleneck in Data Transfer

We run a small network in our office consisting mainly of Intel iMacs we purchased several months ago. The server computer is a brand new Intel Mac Pro server with 4 500 gig drives raided together, two 2.66GHz dual core intel processors, all the other bells and whistles we could think of, etc. We added in two fiber-optic switches: one in the server room, one in the office. The switches connect to each other and the server with fiber optic cables, but the iMacs connect with ethernet cables.
We had the iMacs for a while but we just recently got the new server and upgraded our old 100 base switches. Afterwards we wanted to test out the data transfer speeds, as we plan to back up to the server frequently. We were dismayed to find that transfer rates capped out at 60 MegaBytes/sec according to the Activity Monitor's Network Activity tab. In fact, it would range mostly from 40-45MB/sec. None of us here have much experience with networking, but that seemed a tad too slow. My basic math tells me that a byte is 8 bits, and from that a Gigabit network should transfer data at 120 MegaBytes/sec, which is three times the speeds we were actually seeing.
We sent data both to and from the server in order to test this. Thinking it was perhaps a problem with the ethernet itself, we grabbed an external FireWire hard drive and transferred data from one of the iMacs directly to it and noticed exactly the same transfer rates. We plugged two iMacs directly into each other and transferred at the same rate, ~45MB/sec.
Well this was highly frustrating. All Macs supposedly ship with Gigabit ethernet since, what, 2002? Earlier? Why are our speeds so slow? We thought the hard drives might be slow, so we got info on the drives and googled them for their tech specs. The iMacs' Western Digital drives are capable of much much faster speeds according to everything we've read.
We started reading anything we could online that addressed this issue. Some information read the problem might be that the optical DVD-R/CD-R drive was only capable of slower transfer speeds. Since the optical drive and the hard drive are on the same bus it would slow down the hard drive's maximum transfer rate, much like having a Gigabit hub with a 10 base computer plugged into it would slow the entire network down (which is of course why we use switches instead of hubs). Is there any truth to this? If this is, in fact, the case, can we bypass this bottleneck somehow? I'm not talking about opening the computer and manually disabling the optical drive, as that's a waste of a perfectly good DVD-R/CD-R drive.
Also, if this is true, why in blue blazes is Apple flaunting Gigabit ethernet if the computer can only take advantage of 1/3 the speeds Gigabit ethernet has to offer?! I'll happily provide any more information that's relevant to the problem at hand.
Thank you
Mac OS X (10.4.8)

Here's the specs for the default Hard Drive that Apple put in here:
http://www.westerndigital.com/en/products/Products.asp?DriveID=137
From that page
Buffer To Host (Serial ATA) 300 MB/s (Max)
Buffer To Disk 748 Mbits/s (Max)
I have no idea what signaling overhead for my data transfer protocol means.
The ethernet cords are no longer than 20 feet, are all Cat5E, and are well shielded. There is little to no ElectroMagnetic interference in any area they run. The longest cable is the Fiber Optic one, which runs about... oh... 40 yards? These were all installed by professionals.
I feel it's important to stress the fact that we tested an isolated direct computer to computer transfer with a single 6 foot Cat5E Ethernet cable and still experienced the same speeds that we experienced over the network. We tested multiple computers, multiple cables, multiple files.

Upload data from excel file to "Fast Data Entry" in FB60

Hi,
I have a requirement from users, they want to load data of G/L accounts items in FB60 using "Fast Data Entry" from an excel file.
I did some research and found out that the framework to transfer clipboard data into an SAP table(http://www.synactive.com/examples/example0016.html) seems to be the suitable solution.
However, I still cannot make it work.
Do you have any suggestion for my case ? How can I load data from an excel file to the transaction FB60?
Thanks in advance,
Hung

Dear Hung,
You can upload data through LSMW (Batch Input).
But you need to convert your excel sheet into CSV format or txt format.
Please take help of your ABAP team if required.
This will accommodate your requirement.
Regards
Saurabh

Data transfer very slow on mac pro!! mac H/W unable to fit specifications.

Hi,
I am installinginternal disks on the quad mac pro and the transfer ratet in the mac are very slow!!!
the disks are: barracuda 7200.10 disks, 500 GB. Sta II 300, max ST3500630AS firmware 3.AAE . throughput:300mb.jumpred off to get the 300.
MAC tells that the QUAD MAC Pro equipment (2x2.66ghz dualcore intel xeon) comes with a 3.Gigabit specification/ 300MB/sec. (Intel ESB2 AHCI, speed: 3.0 Gigabit. AHCI version 1.10 supported)...
And the benchmarks of the disk ST3500630AS show maximum 80MB/sec and a minimin of 37.3MB/sec, average 63.1 MB/sec. (anandtech tests).
According to seagate.com the maximum sustained data transfer rate:78MB/s
but in the mac the reallity is different: I am getting a transfer rate of 22MB/sec!!!!! . with out any application running and only making copy of the files!!!!
that means that the mac is only providing only 1/3 of the expected transfer rate for the disks..
so, is there a way that the MAC Pro gets all the normal transfer rate for those disks???
Is the Quad MAC Pro hardware unable to get the maximum throughput of the disks???
It seems that the mac is unable to get also the average transfer rate of those disks.. how to correct it???
thanks a lot
Alberto
ps. just for fun: I am getting a faster transfer rate from an old power pc ,and old pc, and firewire 400 and old ide disks!!! (36MB/seg!!!)

Yup.
BThe latest Mac Pro are better, so if you have a new or 2 month old unit, Seagate should work, though I think there should be later firmware.
Some would say those drives take the cake or woRSe.
http://www.barefeats.com/hard91.html
SEAGATE PUZZLES
+Firmware version 3.AEE or later solves the slow sustained large block write speed issue for a single 7200.10 inside the Mac Pro.+
+The remaining performance issue is slow small random read speeds for one, two, three or four drives. No matter how many drives you configure in RAID 0 sets, the average random read speed for combined block sizes from 64K to 1024K is less than 30MB/s (based on QuickBench 3 testing).+
+Until Seagate fixes this, we can't recommend the 7200.10 series as the ideal boot drive for the Mac Pro (or Power Mac).+
http://www.barefeats.com/quad08.html

How to increase AFP data transfer speed?

When I connect to our server from a WAN source outside of our facility the file data transfer rate is extremely slow. We just upgraded to a 10Mps fiber service and that has dematically increased our website data tranfer speed. I would like to find a way to access the file server from remote location and work, but the data transfer rate makes productivity impossible. I would appreciate hearing how other organizations are set-up and functioning with file transfer sizes at an average of 10 to 15 Mb.
Thanks,
Brian
OS10.6.8 Server,

If you don't have enough network bandwidth for your time requirements, you have little chance of success with the direct approach. Techniques such as file compression and such can only provide limited help. If you're transfering multiple copies of the files, then you can push one copy of the file to a hosted provider, and then serve additional copies from there.
As for your network, a ten million bits per second network connection is the speed of first-generation Ethernet. That Ethernet was a fast network, back in 1985. In the era of a one billion bits per second Gigabit Ethernet and increasingly commonly with the ten gigabit Ethernet links, a 10 Mb link is glacial.
A typical DSL network is asymmetric, meaning you'll have 10 Mb down (theoretically) and some fraction of that up. So you might not be getting that 10 Mb in the direction you're coppying files. And this is best case; various of the ISP network links around aren't providing their rated speeds.
AFP stinks on a network, and you're also opening up your file system to remote attackers.
As for WebDAV, read this. In addition to WebDAV, you can also try an sftp or other "simpler" copy command as a test, and see what you get for that. (sftp is also encrypted, which has benefits, though the encryption also requires more processing time.)
But beyond techniques such as data compression (and which may or may not be an option here) or incremental or "delta" changes to the data (which probably isn't an option here) or working locally and batching over the changes, there are few good ways to contend with a too-slow-for-your-needs link.

Fast Data Transfer

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