Mac to mac copy slows down over internal airport network

This is a strange problem but here goes...
Some useful background info:
I have recently downloaded through the new Airport Express network I just created a file that was 212MB from a site on the internet in about 12 minutes or so which is pretty fast for a DSL connection.
The issue:
When I try to copy files from a PowerBook G4 running Leopard 10.5.2 to an iMac G5 running the same version of the OS, I see the same odd behavior (copying from Public folder to any folder on the iMac):
The copy starts in the finder just fine and seems to be going very fast as expected by an internal network copy but after some arbitrary amount of time, the copy slows down and eventually fails. The time to complete the transfer starts out really fast and eventually hits a brick wall where it slows down further and further.
Other notes: the copy I've been attempting is files and folder that are about 1GB total but I've tried it with small and large copies and this has worked fine in the past with Leopard and other OS'.
Sometimes, this slowdown occurs at 5MB into the copy, other times it doesn't happen until it gets about 50MB into the copy. Thew strange thing is, large files over the Internet are just fine as I mentioned above.
There's plenty of free space on the machine that I'm copying to but this happens repeatedly when I try to copy from one computer running Leopard to another.
I don't think this issue is related to the Airport Express because I recently created a new network to test this issue called Bedroom Airport Express. Previously, when I'd been successful performing these types of transfers, I was using the LinkSys WRT54G's built in wireless capabilities and had no issues using Go To and entering the computer's IP address.
When this issue started to occur, I was baffled so I hooked up the extra Airport Express I had lying around and I'm still seeing the same issue despite the Internet transfers working like gangbusters.
The router is still the WRT54G on AT&T's DSL network using DHCP and there's no special config., other than that I had to re-IP the internal network to 192.168.199.1 for work related reasons but that's about it.
The MTU had to be increased to 1492 for the internet to work properly when I got my first WRT54G [an older version of this device that I replaced very recently with a new one]. The firm ware version of the router is v8.00.2 and the Airport Express has been recently updated to the latest firmware available (and this issue was occurring before the firmware upgrade as I added the Airport Express as an troubleshooting method).
Does anyone know where I should begin to try to resolve this issue? I've tried LinkSys tech suppport and I still get "we're not able to provide Mac tech support" reply despite the fact that addressing the router is done via a webpage and the BSD guts under the hood. If anyone knows what if anything I can do to troubleshoot what the issue is, I would greatly appreciate the assistance.
This networking stuff is a bit of a black art to those of us that are dilletantes in this arena and I certainly qualify as a dabbler in this stuff.
Thanks in advance,
<DM/>

I'm new to the Apple discussions, although not new to Apple computers and I've seen that this post has received quite a few views but no responses. Maybe someone could direct me to the right place to post this, if this is not that place, or, suggest some terminal tools that I could use to troubleshoot the issue with the Airport network or LinkSys Router I'm using [WTR54G v.8.0.0.x]? Thanks in advance for any assistance anyone can provide to a networking noobie.

Similar Messages

Computer to computer copy slows down over internal airport network over time

This is a strange problem but here goes...
Some useful background info:
I have recently successfully downloaded a 212MB file from a site on the internet through a new Apple Airport Express network I just created as a troubleshooting method in about 12 minutes or so and I don't seem to have any slowing down issues with internet connections to websites and downloads.
The issue I seeing with internal network copies:
When I try to copy files from an Apple PowerBook G4 running Leopard 10.5.2 to an iMac G5 running the same version of the OS, copies over the internal network exhibit a very odd behavior. The copy is from the Power Book G4's Public folder to any folder on the iMac.
The copy starts in The Finder just fine and seems to be going very fast as expected by an internal network copy but after some short arbitrary amount of time, the copy slows down, the estimated times grows slowly but consistently for the copy to complete and eventually the OS says there was a problem and the copy fails. There's no error number of message other than the copy couldn't be completed. As I mentioned above, the time to complete the transfer id initially estimated as a very short amount of time but eventually, the copy action hits a brick wall where it slows down further and further until it fails.
Other notes: the copy I've been attempting consists of files and folders that are of various sizes but I've tried it with small and large copies and this has worked fine in the past with Leopard and other, older OS' over the WRT54G's wireless network. I created the Airport Express network to see if that would solve this problem but it hasn't which makes me think the issue is with the router and not the wireless network.
Additional details:
Sometimes, the reported copy slowdown occurs at 5MB into the copy, other times it doesn't happen until it gets about 50MB into the copy. What's strange to me is, large file downloads over the Internet are just fine. There does appear to be some burst that degrades a bit over time but not like the internal network copy's speed which just drops off really quickly.
I have been successful in the past copying from Mac to Mac over this exact same router using the WTR54G's wireless network but I started having problems fairly recently and now the copy doesn't finish over the WRT54G or the Airport Express network that I recently created to see if the issue was with the WRT54G's wireless network settings or hardware.
There's plenty of free space on the machine that I'm copying to but this happens repeatedly when I try to copy from one computer running Leopard to another.
I don't think this issue is related to the Airport Express because I recently created a new network to test this issue called Bedroom Airport Express. Previously, when I'd been successful performing these types of transfers, I was using the LinkSys WRT54G's built in wireless capabilities and had no issues using Go To and entering the computer's IP address.
The router is still the WRT54G on ATT's DSL network using DHCP and there's no special config., other than that I had to re-IP the internal network to 192.168.199.1 for work related reasons but that's about it.
The MTU had to be increased to 1492 for the internet to work properly when I got my first WRT54G; an older version of this device that I replaced recently with a new one [although this copy worked with the new one as well prior to the issue I'm posting about coming up].
The firmware version of the WTR54G router is v8.00.2 and the Airport Express has been recently updated to the latest firmware available (this issue was occurring over the WRT54G's wireless network before the firmware upgrade to the Airport Express).
If anyone knows what if anything I can do to troubleshoot what the issue is, I would greatly appreciate the assistance.
This networking stuff is a bit of a black art to those of us that are dilettantes in this arena and I certainly qualify as a dabbler in the art of network configuration.
I've been using a LinkSys router for a long time with a Mac/PC internal network that connects to the internet and computers inside the internal network for many years now and have had few issues.
Thanks in advance,
Darin

I'm new to the Apple discussions, although not new to Apple computers and I've seen that this post has received quite a few views but no responses. Maybe someone could direct me to the right place to post this, if this is not that place, or, suggest some terminal tools that I could use to troubleshoot the issue with the Airport network or LinkSys Router I'm using [WTR54G v.8.0.0.x]? Thanks in advance for any assistance anyone can provide to a networking noobie.

My Mac is slowing down and when I jump on the internet I see the rainbow ball a lot and it goes no where, I have to shut it down and try to restart several times a day?

My Mac is slowing down and when I jump on the internet I see the rainbow ball a lot and it goes no where, I have to shut it down and try to restart several times a day?

See if either of these help : http://www.maclife.com/article/feature/25_ways_speed_your_mac
http://www.macworld.com/article/151583/2010/05/spinningbeachballofdeath.html

Why does project save slow down over duration of project life?

I notice when I'm editing in a project in Premiere Pro CC, the auto save or even if I just save, the save slows down over time. You can slowly see the save bar going slower and slower over time. Even if I don't add any new media or import different files the save still goes a lot slower overtime. Sometimes the save bar will hang at a certain point for 20 secs or so and then continue. I understand if I add more media, files, pics, music etc... the save will take longer. But why does it do this if I'm just editing with some effects? Is it something to do with the cache folder getting too large or that I have too many auto saves? Should I clean out these folders? Also if it hangs at one spot for 10 secs or so is it because there is a corrupt file somewhere?
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My specs: Mac Pro 2009
Processor 2 x 2.26 GHz Quad-Core Intel Xeon
Memory 32 GB 1066 MHz DDR3 ECC
Graphics NVIDIA GeForce GTX 680 2048 MB
Startup disk SSD

I can answer some parts:
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Cursor slows down over clickable objects

hello,
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thanks
any help is greatly appreciated!
if you need more info just ask

-bump-
is it not possible to turn this feature off?

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------ Web100 Detailed Analysis ------
Client Receive Window detected at 1045440 bytes.
Cable modem/DSL/T1 link found.
Link set to Full Duplex mode
Information: throughput is limited by other network traffic.
Good network cable(s) found
Normal duplex operation found.
SHould I be concerned by the portion that I bolded and underlined?
Also, I just last night upgraded my service to the 1.1 to 3.0 service but I've not gotten a speed increase. Any suggestions?
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Analysis information:
Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
SendBufferSize set to [130680]
running 10s outbound test (client to server) . . . . . 471.01Kb/s
running 10s inbound test (server to client) . . . . . . 556.87kb/s
------ Client System Details ------
OS data: Name = Windows XP, Architecture = x86, Version = 5.1
Java data: Vendor = Sun Microsystems Inc., Version = 1.6.0_29
------ Web100 Detailed Analysis ------
Client Receive Window detected at 1045440 bytes.
Cable modem/DSL/T1 link found.
Link set to Full Duplex mode
Information: throughput is limited by other network traffic.
Good network cable(s) found
Normal duplex operation found.
Web100 reports the Round trip time = 1247.01 msec; the Packet size = 1322 Bytes; and
There were 14 packets retransmitted, 4 duplicate acks received, and 5 SACK blocks received
The connection stalled 1 times due to packet loss
The connection was idle 2.65 seconds (17.66%) of the time
This connection is sender limited 75.84% of the time.
This connection is network limited 24.16% of the time.
Web100 reports TCP negotiated the optional Performance Settings to:
RFC 2018 Selective Acknowledgment: ON
RFC 896 Nagle Algorithm: ON
RFC 3168 Explicit Congestion Notification: OFF
RFC 1323 Time Stamping: OFF
RFC 1323 Window Scaling: ON
Information: Network Middlebox is modifying MSS variable
Server IP addresses are preserved End-to-End
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Server says [xxx.xxx.xxx.xxx] but Client says [xxx.xxx.xxx.xxx]

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Check out this thread:
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Open the Console app and look for log entries right before your had to boot up the Mac. Post them here.

Mac Pro slow down after Yosemite 10.10.2 upgrade

Upgraded in January.
I get the spinning color wheel all the time. Programs crash.
I've run adware medic a few times, and etrecheck.
First run through, adware found Genio.
Since then, it hasn't. Etrecheck still says it sees it, but Adware doesn't. Still no good.
I reset SMS and PRAM.
This machine is slow. Previous to the upgrade, this machine was very fast!
Etrecheck report:
Hardware Overview:
Model Name:    Mac Pro
Model Identifier:    MacPro5,1
Processor Name:    Quad-Core Intel Xeon
Processor Speed:    2.4 GHz
Number of Processors:    2
Total Number of Cores:    8
L2 Cache (per Core):    256 KB
L3 Cache (per Processor):    12 MB
Memory:    20 GB
Processor Interconnect Speed:    5.86 GT/s
Boot ROM Version:    MP51.007F.B03
SMC Version (system):    1.39f11
SMC Version (processor tray):    1.39f11
Serial Number (system):    YM12403QEUF
Serial Number (processor tray):    J512102JZBH8C
Hardware UUID:    331ADEF9-7672-54D4-B314-6CC9510F23F1
EtreCheck version: 2.1.8 (121)
Report generated March 26, 2015 at 2:21:54 PM CDT
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
Click the [Adware! - Remove] links for help removing adware.
Hardware Information: ℹ️
    Mac Pro (Mid 2010) (Technical Specifications)
    Mac Pro - model: MacPro5,1
    2 2.4 GHz Quad-Core Intel Xeon CPU: 8-core
    20 GB RAM Upgradeable
        DIMM 1
            4 GB DDR3 ECC 1066 MHz ok
        DIMM 2
            4 GB DDR3 ECC 1066 MHz ok
        DIMM 3
            1 GB DDR3 ECC 1066 MHz ok
        DIMM 4
            1 GB DDR3 ECC 1066 MHz ok
        DIMM 5
            4 GB DDR3 ECC 1066 MHz ok
        DIMM 6
            4 GB DDR3 ECC 1066 MHz ok
        DIMM 7
            1 GB DDR3 ECC 1066 MHz ok
        DIMM 8
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    Bluetooth: Old - Handoff/Airdrop2 not supported
    Wireless: en2: 802.11 a/b/g/n
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        HP 2711 1920 x 1080 @ 60 Hz
        HP 2711 1920 x 1080 @ 60 Hz
System Software: ℹ️
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Disk Information: ℹ️
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USB Information: ℹ️
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        disk1s1 (disk1s1) <not mounted> : 32 KB
        Flux Capacitor (disk1s3) /Volumes/Flux Capacitor : 1.50 TB (880.50 GB free)
    EPSON EPSON Perfection V37/V370
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Kernel Extensions: ℹ️
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Launch Agents: ℹ️
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    [running]    com.adobe.AdobeCreativeCloud.plist [Click for support]
    [running]    com.extensis.FMCore.plist [Click for support]
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Launch Daemons: ℹ️
    [running]    com.adobe.adobeupdatedaemon.plist [Click for support]
    [running]    com.adobe.ARM.[...].plist [Click for support]
    [loaded]    com.adobe.fpsaud.plist [Click for support]
    [loaded]    com.adobe.SwitchBoard.plist [Click for support]
    [loaded]    com.barebones.authd.plist [Click for support]
    [loaded]    com.barebones.textwrangler.plist [Click for support]
    [loaded]    com.microsoft.office.licensing.helper.plist [Click for support]
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User Launch Agents: ℹ️
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    [loaded]    com.google.keystone.agent.plist [Click for support]
User Login Items: ℹ️
    AraxiVolume_HW25512-63_J    Volume Hidden (/Volumes/AraxiVolume_HW25512-63_J)
    AraxiTemp_HW25512-63_C    Volume Hidden (/Volumes/AraxiTemp_HW25512-63_C)
    JobNAS    Volume Hidden (/Volumes/JobNAS)
    Dropbox    Application (/Applications/Dropbox.app)
    Microsoft Outlook    Application (/Applications/Microsoft Office 2011/Microsoft Outlook.app)
Internet Plug-ins: ℹ️
    WacomNetscape: Version: 1.1.0-5 [Click for support]
    Default Browser: Version: 600 - SDK 10.10
    AdobeExManDetect: Version: AdobeExManDetect 1.1.0.0 - SDK 10.7 [Click for support]
    WacomSafari: Version: 1.1.0-5 [Click for support]
    AdobeAAMDetect: Version: AdobeAAMDetect 2.0.0.0 - SDK 10.7 [Click for support]
    FlashPlayer-10.6: Version: 17.0.0.134 - SDK 10.6 [Click for support]
    AdobePDFViewerNPAPI: Version: 11.0.10 - SDK 10.6 [Click for support]
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    QuickTime Plugin: Version: 7.7.3
    iPhotoPhotocast: Version: 7.0 - SDK 10.8
    SharePointBrowserPlugin: Version: 14.4.8 - SDK 10.6 [Click for support]
    AdobePDFViewer: Version: 11.0.10 - SDK 10.6 [Click for support]
    JavaAppletPlugin: Version: Java 8 Update 31 Check version
User internet Plug-ins: ℹ️
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Safari Extensions: ℹ️
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    Flash Player [Click for support]
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Time Machine: ℹ️
    Time Machine not configured!
Top Processes by CPU: ℹ️
        12%    WindowServer
         3%    launchd
         2%    AdobeAcrobat
         1%    plugin-container
         1%    hidd
Top Processes by Memory: ℹ️
    966 MB    firefox
    537 MB    Adobe Illustrator
    494 MB    softwareupdated
    451 MB    Adobe Photoshop CC 2014
    301 MB    mds_stores
Virtual Memory Information: ℹ️
    3.78 GB    Free RAM
    10.89 GB    Active RAM
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    0 B    Page-outs
Diagnostics Information: ℹ️
    Mar 26, 2015, 02:01:09 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Adobe Illustrator_2015-03-26-140109_[redacted].crash
    Mar 26, 2015, 09:57:44 AM    /Library/Logs/DiagnosticReports/Microsoft Excel_2015-03-26-095744_[redacted].hang
    Mar 26, 2015, 09:57:43 AM    /Library/Logs/DiagnosticReports/AdobeAcrobat_2015-03-26-095743_[redacted].hang
    Mar 26, 2015, 09:46:15 AM    Self test - passed
    Mar 26, 2015, 08:02:51 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-080251_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 08:02:13 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-080213_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 08:01:35 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-080135_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 08:00:58 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-080058_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 08:00:20 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-080020_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:59:42 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-075942_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:59:04 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-075904_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:57:45 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-075745_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:56:27 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-075627_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:54:30 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-075430_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:53:11 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-075311_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:51:53 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-075153_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:51:15 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-075115_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:50:37 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-075037_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:48:39 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-074839_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:48:01 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-074801_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:47:22 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-074722_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:46:42 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-074642_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:40:07 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-074007_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:39:29 AM    /Library/Logs/DiagnosticReports/???_2015-03-26-073929_[redacted].cpu_resource.d iag [Click for details]
    Mar 26, 2015, 07:31:07 AM    /Library/Logs/DiagnosticReports/Adobe Photoshop CC 2014_2015-03-26-073107_[redacted].cpu_resource.diag [Click for details]
    Mar 26, 2015, 07:18:59 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Adobe Photoshop CC 2014_2015-03-26-071859_[redacted].crash
    Mar 26, 2015, 07:08:28 AM    /Library/Logs/DiagnosticReports/mdworker32_2015-03-26-070828_[redacted].cpu_res ource.diag [Click for details]
    Mar 26, 2015, 06:52:15 AM    /Library/Logs/DiagnosticReports/mdworker32_2015-03-26-065215_[redacted].cpu_res ource.diag [Click for details]
    Mar 26, 2015, 06:28:11 AM    /Library/Logs/DiagnosticReports/mdworker32_2015-03-26-062811_[redacted].cpu_res ource.diag [Click for details]
    Mar 26, 2015, 06:27:33 AM    /Library/Logs/DiagnosticReports/mdworker32_2015-03-26-062733_[redacted].cpu_res ource.diag [Click for details]
    Mar 25, 2015, 09:19:55 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/Adobe Illustrator_2015-03-25-091955_[redacted].crash
    Mar 25, 2015, 05:40:16 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/plugin-container_2015-03-25-05 4016_[redacted].crash
    Mar 24, 2015, 10:58:55 AM    /Library/Logs/DiagnosticReports/Adobe Illustrator_2015-03-24-105855_[redacted].cpu_resource.diag [Click for details]
    Mar 23, 2015, 04:52:41 PM    /Library/Logs/DiagnosticReports/Adobe Illustrator_2015-03-23-165241_[redacted].hang
    Mar 23, 2015, 04:46:35 PM    /Library/Logs/DiagnosticReports/Adobe Illustrator_2015-03-23-164635_[redacted].hang
    Mar 23, 2015, 04:45:23 PM    /Library/Logs/DiagnosticReports/Adobe Illustrator_2015-03-23-164523_[redacted].cpu_resource.diag [Click for details]
    Mar 23, 2015, 03:29:11 PM    /Library/Logs/DiagnosticReports/Canon Office Printer Utility_2015-03-23-152911_[redacted].hang

Malware – Adware removal – Apple Support
Activity Monitor - Mavericks also Yosemite
Activity Monitor in Mavericks has significant changes
Performance Guide
Why is my computer slow
Why your Mac runs slower than it should
Slow Mac After Mavericks
Things you can do to resolve slowdowns see post by Kappy

XY dot plot slows down over time

In my VI I am using Express XY graph to plot a continous stream of XY coordinates over a contstant domain and range. I would like to keep the trail of these points.
Initially, plotting is very fast. But it eventually slows down to a crawl as point keep coming in. I have disabled autoscaling and smooth updates, but still the same problem.
Is there any solution to this, other than periodically reseting the graph?

Hello Amir,
I�m assuming that your data is being streamed into an array, and that you are then plotting that array on the XY graph. If this is the case, the XY graph has to rewrite itself every time, since XY graphs are a one-shot display. They are not set up for streaming. As your data keeps streaming in, the array gets bigger and bigger, causing the XY graph to take longer to refresh, slowing everything down.
One solution is to only plot the last x number of data points (x based on how fast you want it to refresh vs how much data you want to see). I�m including an example of a circular buffer than does just this. You�ll have to modify it for your data and for the XY graph, but the idea is the same.
If none of these suggestions help, please
post the software and versions you are using, the applicable portions of your code, and any other information that may help, and I�ll be happy to look further into it.
Have a nice day!
Robert Mortensen
Software Engineer
National Instruments
Attachments:
CircularBuffer.vi ‏29 KB

EA6200 slows down over time and needs reboot

Anyone with a EA6200 notice it slowing down after about a week of use? I just replaced my e2000 with a EA6200 and its runs very well for about a week. After about a week I notice it slows down. Pages start loading very slow on all of my devices on my 2.4ghz and 5ghz ssids. It slows down to a point where it takes forever just to get logged into the router to and get to the page where I can reboot it so I know its the router. Once I reboot it, it runs great for about another week. Its using newest firmware. I have 2.4ghz set to 20mhz and 5ghz set to 80mhz, channels set to auto. Nothing to customized beyond that.

Try:
Connectivity => Administration => Cut through Forwarding => Uncheck
If IPv6 isn't required by your ISP; Connectivity => Internet Settings => IPv6 => Edit => Uncheck Enable
Media Prioritization => Enable => Check
Media Prioritization => Settings and apply accurate Downstream and if available Upstream values; Initially keep all devices and Apps normal priority
If you have throughput issues on Wifi try Disabling WMM support (EA6200\6400); if no difference is notice re-enable WMM
Please remember to Kudo those that help you.
Linksys
Communities Technical Support

Code Slows Down Over Time

While using LabVIEW to code an optical sensor that is used to see when a coin passes through a passage, the code will initally run at a fast enough rate to read a coin falling through it. Yet as time goes on the while loop the sensor is within slows down to a point where it is not quick enough to see/detect a coin falling through. There are two while loops running in parallel, that may still be causing some issues in priority?
Thanks in advance,
Ben

Along with what crossrulz said, your acquisition to find the coin is a little funky. You're pulling a single sample each time that loop runs, so you're limited to the loop rate of that loop for find the coin.
Instead, you should configure your DAQmx task to do hardware timing at a fast(er) rate and then pull all available samples with each iteration. Then you can see within all of the new samples if there is a coin when there wasn't previously (same logic you currently have, but on a data set). For example, you can have this loop timed to run at 20Hz, but your data is acquired at 1000Hz and chunks of the data can be analyzed at a time. This way is much more efficient than what you're doing.

System slows down after installing AirPort Extreme Update 2007-001

my macbook's internet related performance has been significantly slowed down recently. i have windows xp installed on my mac from where i can compare the performance of ie and safari or ie and firefox on mac. the result is ie on windows xp is much faster. the wireless connection is even more reliable and has more signal strenth under windows. these "slow" situations of mac only happens recently, and the only thing that i can think of to mark the change is the installation of AirPort Extreme Update 2007-001. please advise what i can do to bring back the good performance of mac. (i.e.:if i type in www.google.ca in the address bar of safari, the blue bar will just be stuck around "http://" for a long time before the simple page gets loaded while the status bar of safari is showing contacting google.ca)

Same scenario here, though I'm running 10.4.9. on a Mac Pro. I've tried every known fix, but Safari still stalls every few minutes - taking upwards of a minute to continue loading whatever page I was browsing to.
Other apps, including Mail, Firefox, and Remote Desktop screen sharing aren't affected - I can ping away without issue while Safari is choking, and there is no unusual Safari CPU consumption in Activity Monitor
Mac Pro Mac OS X (10.4.9)

Internet slow down after installing airport extreme.

I would like to know if there is a reason this slow down occurred. I have tried a locked setting and now have an unlocked setting. Unlocked because that was the only way I could get nintendo ds to work online. Any suggestions would be appreciated.

Beanziez, Welcome to the discussion area!
Unfortunately the Nintendo DS only supports WEP and not the much more secure WPA2 or WPA.
What slow down? You gave no information on this except asking the question.

Mac pro slows down after RAM uppgrade ASP (its my workstation)

I have an mac pro (first 8core released back in 2007) and i uppgraded it from 4 to 8 gig of ram. After the upgrade it became slower so I installed snow leopard since it should handle ram and multicores better but that didnt help. Its like it go from sleepy to extreme slow. Like an photoshop image that should take 12 seconds to load took 10min!! So its somethin fishy.
The old configration
DIMM Riser A/DIMM 1: 1 GB
DIMM Riser A/DIMM 2: 1 GB
DIMM Riser B/DIMM 1: 1 GB
DIMM Riser B/DIMM 2: 1 GB
DIMM Riser A/DIMM 3: 0 GB
DIMM Riser A/DIMM 4: 0 GB
DIMM Riser B/DIMM 3: 0 GB
DIMM Riser B/DIMM 4: 0 GB
The new uppgraded
DIMM Riser A/DIMM 1: 1 GB
DIMM Riser A/DIMM 2: 1 GB
DIMM Riser B/DIMM 1: 1 GB
DIMM Riser B/DIMM 2: 1 GB
DIMM Riser A/DIMM 3: 2 GB
DIMM Riser A/DIMM 4: 2 GB
DIMM Riser B/DIMM 3: 0 GB
DIMM Riser B/DIMM 4: 0 GB
Does 2007 have 4 memory chips as ideal as 2006 had? Can the macstore give me bad compatible rams (i asked for orginal mac ram memmorys). If this could make it go slow. Mabe snow leapord helped out to slow it down but I worked one and half day before I uppgraded to snow leopard and it was already slow.
This is on my worskstation so its Asp. Is there any heros here?
(ok I will test to take out the ram and se if everything goes back to normal but still I would like to get it to work)
Cheers
Joel

"need" is something that is "recommended" for symmetrical memory performance.
It shouldn't run any different really.
I always recommend this:
try with just the new RAM
put highest density in A1:A2
It is symmetrical, sort of, as 4x1GB in slots 1:2 on both Risers.
My take: doesn't play nice or get along with original 4GB; marginal; and ideal is 4 x 2GB; second best 8 x 1GB. 6 DIMMs is the worst configuration AFTER not having enough.
I'd wipe out your swap files; clone your drive - if you haven't done so in six months you should, also if moving to a new OS, DEFINITELY either
Clean install on new/2nd drive (great excuse for new fast drive);
Clone and then upgrade (worst scenerio)
Clean install followed by running Migration Assistant for everything except applications.
Don't want to have issues with new OS, new drivers, AND new hardware (even RAM) and a new OS isn't going to fix a problem, just add new ones. And TEST a new OS before you commit yourself (reason for backups and clones and the like).
Also, run Disk Warrior on fresh clone before you use it.
What you do, why, you probably did need more RAM, 4GB is pretty basic and not even enough for pro apps like graphic editing.
Watch RAM temps and run AHT Extended Loop briefly.
I'd watch for bad blocks and disk sectors; re-initialize drives, even install some new ones: WD 10K V-Raptor for system and another for scratch; Samsung 1TB F3 for data.... something like that if it has been 2+ yrs.

Mac to mac copy slows down over internal airport network

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