Could my nexus be slowing down UDP traffic?

I have a pair of 5010 switches. On the switch is an OpenVPN server (That can operate in UDP or TCP mode) and a Juniper VPN appliance. We experience the same problem with both VPNs.
We connect to this VPN to access secure network segments, it's all high speed 1GB+ local area network.
How to produce the problem:
* Connect to either VPN in UDP mode.
* Start pinging a a machine through the VPN.
* Copy a large file from workstation to another server behind VPN.
     * Watch pings go from 1ms to 50-125ms, including MANY dropped packets. (Probably 5-10 percent loss)
     * CPU utilization on the OpenVPN server is low, about 20 percent.
     * File transfer speed is ~5 to 6 mb/sec.
Now, switch OpenVPN over to TCP mode (which I would expect to be much slower, especially on high speed reliable networks) and repeat.
     * Ping times stay sub 12ms and there are no dropped packets.
     * CPU on OpenVPN box is 100 percent.
     * File transfer speed.... 22 mb/sec!
I haven't taken the time to switch the Juniper VPN to TCP mode, it's kind of time consuming and I'd rather skip it.
My firewall doesn't indicate anything abnormal or special going on and I want to rule out the Nexus if I can.
EDIT: Don't know if this stuff matters, I'm not an expert, but I wanted to include it here.
class-map type qos class-fcoeclass-map type queuing class-all-flood match qos-group 2class-map type queuing class-ip-multicast match qos-group 2class-map type network-qos class-all-flood match qos-group 2class-map type network-qos class-ip-multicast match qos-group 2

These commands are default QOS commands on all Nexus devices and don't have anything to do with slowness you are encountering.
HTH

Similar Messages

10.4.10 update slows down SMB traffic?

Hi all!
This is my first mac-post. Forgive my mac-related ignorance, I'm trying to learn.. It's kind of an old-dog-new-tricks deal..
Anyway, I've been researching a clients recent complaints that reading and writing files to and from their Windows Small Business Server 2003 server suddenly (a few days ago) slowed down immensely - to the point where it's almost unusable. They use VectorWorks for CAD and loading/saving a 20MB file will take several minutes on their 100Mbit/s network! Also playing video from the server is choppy.
I've been researching the problem, and I've tested and checked out the normal networking problems like cabling, switches, server NIC, speed/duplex settings etc.. I've also tried various solutions to slow SMB traffic from other Mac-forums, like disabling TCP/IP v6 and disabling ACK delay on the macs, seeing absolutely NO improvements.
I believe, however, that I've isolated the problem to the recent 10.4.10 update:
* Their 1 Macbook with the 10.4.10 update has this problem.
* Their 4 iMacs with the 10.4.10 update has this problem.
* Their 1 iMac still on 10.4.9 DOES NOT have this problem.
* Their 1 Mac Pro with the 10.4.10 update DOES NOT have this problem.
So, it looks to me like the 10.4.10 breaks "something" on the "little" Macs while the Mac Pro seems unaffected.
What can I do to rectify this problem? My client complains about lost efficiency and I'm at a loss about what to do next. Can anyone help me out?

{quote:title=BDAqua wrote:}
Not exactly clear where we are right now, but did Applejack report any fixins?{quote}
Ok, I'll try to summarize todays findings...
* AppleJack was run in interactive mode, ran all five tests, found nothing (as far as I could see)
* Rebooted twice, still no better.
* AppleJack was run in the AUTO mode. Same result.
* I tested the transfer speed with smbget, it starts at 100kbps and rises to about 700kbps as the transfer progresses. On a 100MB Ethernet, I'd expect to see at least 1MB to about 10MB.
* Then I downloaded Pacifist and installed everything that matched a search for "smbfs" in the install files, which are OS X 10.4.3 (or was it .7?? argh.. I forget, check tomorrow).
* I was now out of luck, as the previously created aliases failed and a connection to the server through Finder was impossible. Smbget still works though!
* The kextstat -b com.apple.filesystems.smbfs command now only displays infoheader, but no info.
* Now, I'm looking at a backup of a few files and a complete reinstall of the Macbook to see if that does the trick.
My client hasn't seen the bill for these hours of troubleshooting yet, but I have a feeling I'll have to throw in the towel real soon. Ooops, I sent him the link for this thread, maybe he's watching!?

HP ENVY Phoenix h9-1420t CT slows down 100x after 30 minutes of startup, requires constant reboot

Windows 8, now Windows 8.1 does the same. After about 30 minutes everything is so slow.
For example: at first start, start up Control Panel is less than 1 second. After 30 minutres, Control panel takes 1Min 45 seconds to open. A Internet Explorer search goes from 1 second to over 1 minute.
Control Panel shows less than 3% total CPU and only a fraction of the total RAM is used. There are no strange applications running.
Running Paid version of Kaspersky. Run Microsoft Defender - no virus or registry errors.
Twice HP support instantly determines (with no facts) that it is a "virus" and had me install the Windows 8 OS from scratch. This didn't change anything either time. I am a little upset at all that time wasted because it requires installing all of the updates, then MS Office 2013. That is all we are trying to use on this machine. It is not a gaming or web surfing machine. We can't use it for MS Office because it failes to respond after about 30 minutes.
I have updated all the November drivers for motherboard, drive and others listed.
I manage over a dozen computers, this is a problem for the HP Envy Phoenix since day 1.
We are holding off on ordering any more HP in 1 qtr 2014 if this can't be fixed.
We won't accept it has a virus again unless HP can at least provide some proof or reasonable instructions.
We are very open to getting this fixec, but have spent over 100 hours of time and lost huge productvity. Our employee is working on an XP machine so they can stay more productive.

Hi Tesla3D,
One item of possible interest in your post is running both Kaspersky and Windows Defender.
You should turn off Defender in Control Panel.
That could be what is slowing down your system.
Note to self, check date of post!
Jaco
****I am not an HP employee****
Please give a" Kudos, Thumbs Up" if advice received is relevant or" Accept as Solution" to assist other forum users having a similar problem.
HP Products:
810-150se Desktop
17t-j000 Notebook
H8 1380t CTO Desktop
560z Desktop
Errare humanum est.

My magic mouse behaves erratically with intermittent problems - slows down, right click doesn't work, disconnects for a few seconds then reconnects. Anyone suggest what I could do to fix this?

My magic mouse behaves erratically with intermittent problems - slows down, right click doesn't work, disconnects for a few seconds then reconnects. Anyone suggest what I could do to fix this?

I just figured out the print quality issue for my wife with her new iMac and new printer.
She replaced both at once and she couldn't understand why her Artisan 730 was lower quality then her Epson R280 when they had the same specs.
Turns out the newer printer had the option to connect via wifi which we used during setup.
The driver options are completely different depending on how you connect.
Once I connected via USB the correct options were available and the print quality was better.
Looking at the R2400 it dies not have wifi, but while researching the problem for my wife someone esle was having an issue updating to the latest printer driver.
If you go into the print utility from the Printer and Scanner system preference and under the general tab you should have driver 5.5.
One user had to delete the old printer driver before Software Update loaded the newer printer driver.
https://discussions.apple.com/message/15947486#15947486
On my MacBook Pro (w Snow Leopard) I always had to reconnect my wifi at home when it woke up. I upgraded my router from an old Netgear to a newer N D-Link and stopped having to do that.
I would be surprised you would have that problem with an Airport Extreme, you might check to see if there is a firmware update for it.

Could itunes be slowing down my computer?

My Mac mini has been running sluggishly (taking time to respond to movements of the mouse & keyboard, etc). Someone suggested running the activity monitor in the hope of discovering what the problem could be. I've done so, and the only thing I notice is that when I'm playing music on itunes the %CPU stat is something like 50 or 60%. Is this normal? Could it be the source of the slow down? If so, what do I do about it?

Thomas A Reed's Mac Performance Guide - http://www.reedcorner.net/mpg
Instructions on using Console to analyze slow computer response [Linc Davis] -
https://discussions.apple.com/message/18143592
I guess it depends upon what iTunes is doing. The newer versions have become so bloated with Genius, Ping, iTunes Store, Match, etc. My version 7.5 uses 6% of my dual CPU when playing music and I am running a 10 year old Mac.

I just bought MacBook Pro 13'' for 1 week, and load cycle is 11. How could I slow down the load cycle count?

The question is that, Could anyone tell me how to slow down load cycle count?

"Apple does not recommend leaving your portable plugged in all the time. An ideal use would be a commuter who uses her notebook on the train, then plugs it in at the office to charge. This keeps the battery juices flowing."
Could you please explain me this?
I also want to ask another question is: " Is it good if I charge to 100%, then drain battery to 80%, then plug-in charger again"?

Why is my iMac slowing down? Have EtreCheck info. Could someone check?

Hi, I would love for someone to help me work out why my iMac is starting to slow down. Do I need to get more GB?
Problem description:
iMac has started to slow down, a lot of applications taking a while to load and sometimes freezing, going from application to application there is a lag. Just wondered if there is a problem with the iMac or I just need to bump up the memory..
EtreCheck version: 2.1.6 (109)
Report generated 25 January 2015 11:42:14 GMT
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Click the [Adware] links for help removing adware.
Hardware Information: ℹ️
iMac (27-inch, Mid 2011) (Technical Specifications)
iMac - model: iMac12,2
1 2.7 GHz Intel Core i5 CPU: 4-core
4 GB RAM Upgradeable
BANK 0/DIMM0
2 GB DDR3 1333 MHz ok
BANK 1/DIMM0
2 GB DDR3 1333 MHz ok
BANK 0/DIMM1
empty empty empty empty
BANK 1/DIMM1
empty empty empty empty
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
AMD Radeon HD 6770M - VRAM: 512 MB
iMac 2560 x 1440
System Software: ℹ️
OS X 10.10 (14A389) - Time since boot: 0:33:38
Disk Information: ℹ️
ST31000528AS disk0 : (1 TB)
EFI (disk0s1) <not mounted> : 210 MB
Macintosh HD (disk0s2) / : 999.35 GB (743.71 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
OPTIARC DVD RW AD-5690H
USB Information: ℹ️
Apple Computer, Inc. IR Receiver
Apple Internal Memory Card Reader 7.95 GB
NO NAME (disk1s1) /Volumes/NO NAME : 7.94 GB (195 MB free)
Apple Inc. FaceTime HD Camera (Built-in)
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information: ℹ️
Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
Mac App Store and identified developers
Kernel Extensions: ℹ️
/System/Library/Extensions
[loaded] com.Cycling74.driver.Soundflower (1.6.6 - SDK 10.6) [Support]
[not loaded] com.pctools.iantivirus.kfs (1.0.1) [Support]
[not loaded] com.wacom.kext.pentablet (5.2.1) [Support]
[not loaded] com.wacom.kext.wacomtablet (6.1.7) [Support]
Launch Agents: ℹ️
[not loaded] com.adobe.AAM.Updater-1.0.plist [Support]
[running] com.adobe.AdobeCreativeCloud.plist [Support]
[loaded] com.adobe.CS4ServiceManager.plist [Support]
[running] com.brother.LOGINserver.plist [Support]
[loaded] com.divx.dms.agent.plist [Support]
[loaded] com.divx.update.agent.plist [Support]
[running] com.wacom.pentablet.plist [Support]
[running] com.wacom.wacomtablet.plist [Support]
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist [Support]
[invalid?] com.adobe.SwitchBoard.plist [Support]
[loaded] com.adobe.versioncueCS4.plist [Support]
[failed] com.autodesk.backburner_manager.plist [Support] [Details]
[running] com.autodesk.backburner_server.plist [Support]
[failed] com.autodesk.backburner_start.plist [Support] [Details]
User Launch Agents: ℹ️
[loaded] com.adobe.AAM.Updater-1.0.plist [Support]
[loaded] com.adobe.ARM.[...].plist [Support]
[failed] com.facebook.videochat.[redacted].plist [Support]
[loaded] com.google.keystone.agent.plist [Support]
[not loaded] com.linotype.FontFolderProtector.plist [Support]
[running] com.spotify.webhelper.plist [Support]
User Login Items: ℹ️
FontExplorerXAutoload Application Hidden (/Users/[redacted]/Library/Application Support/Linotype/FontExplorer X/FontExplorerXAutoload.app)
iTunesHelper Application Hidden (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
uTorrent UNKNOWN (missing value)
iAntiVirus Application Hidden (/Applications/iAntiVirus/iAntiVirus.app)
Internet Plug-ins: ℹ️
WacomNetscape: Version: 1.1.0-4 [Support]
OVSHelper: Version: 1.1 [Support]
Default Browser: Version: 600 - SDK 10.10
WacomSafari: Version: 1.1.0-4 [Support]
AdobeAAMDetect: Version: AdobeAAMDetect 2.0.0.0 - SDK 10.7 [Support]
FlashPlayer-10.6: Version: 16.0.0.296 - SDK 10.6 [Support]
DivX Web Player: Version: 3.0 - SDK 10.5 [Support]
AdobePDFViewerNPAPI: Version: 10.1.13 [Support]
Flash Player: Version: 16.0.0.296 - SDK 10.6 Mismatch! Adobe recommends 16.0.0.287
QuickTime Plugin: Version: 7.7.3
Silverlight: Version: 5.1.20913.0 - SDK 10.6 [Support]
AdobePDFViewer: Version: 10.1.13 [Support]
JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
User internet Plug-ins: ℹ️
Google Earth Web Plug-in: Version: 7.1 [Support]
3rd Party Preference Panes: ℹ️
Adobe Version Cue CS4 [Support]
Flash Player [Support]
Perian [Support]
Time Machine: ℹ️
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 999.35 GB Disk used: 255.63 GB
Destinations:
My Passport [Local]
Total size: 499.95 GB
Total number of backups: 35
Oldest backup: 2013-09-23 18:40:17 +0000
Last backup: 2014-04-20 08:44:46 +0000
Size of backup disk: Too small
Backup size 499.95 GB < (Disk used 255.63 GB X 3)
Top Processes by CPU: ℹ️
      11% WindowServer
      7% com.apple.dock.ecap
      4% ocspd
      2% Spotify
      1% Safari
Top Processes by Memory: ℹ️
163 MB FontExplorer X Pro
163 MB Spotify
159 MB Finder
131 MB com.apple.WebKit.WebContent
112 MB Safari
Virtual Memory Information: ℹ️
24 MB Free RAM
1.61 GB Active RAM
1.61 GB Inactive RAM
882 MB Wired RAM
3.26 GB Page-ins
18 MB Page-outs
Diagnostics Information: ℹ️
Jan 25, 2015, 11:10:39 AM /Library/Logs/DiagnosticReports/backburnerManager_2015-01-25-111039_[redacted]. crash
Jan 25, 2015, 11:09:21 AM Self test - passed
Jan 24, 2015, 03:12:46 PM /Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2015-01-24-151246_[ redacted].cpu_resource.diag [Details]
Jan 24, 2015, 02:49:15 PM /Library/Logs/DiagnosticReports/backburnerManager_2015-01-24-144915_[redacted]. crash
Jan 24, 2015, 01:15:09 AM /Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2015-01-24-011509_[ redacted].cpu_resource.diag [Details]
Jan 23, 2015, 10:08:57 PM /Library/Logs/DiagnosticReports/System Preferences_2015-01-23-220857_[redacted].hang

First, removing "iAntiVirus" will have no effect if you're running Yosemite, because it doesn't load in Yosemite.
Back up all data immediately if you haven't already done so. You should have done that before doing anything else.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad and start typing the name.
The title of the Console window should be All Messages. If it isn't, select
          SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
          View ▹ Show Log List
from the menu bar at the top of the screen.
Click the Clear Display icon in the toolbar. Then take an action that isn't working the way you expect. Select any messages that appear in the Console window. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
The log contains a vast amount of information, almost all of which is irrelevant to solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
Some private information, such as your name or email address, may appear in the log. Anonymize before posting.

I feel like my internet slowed down can i fix it (WRT54GV5)?

is there a channel where i can check my speed and can i adjust it? Why is my internet connection slowing down?
Message Edited by JJbro1 on 12-07-200610:06 PM

Internet speed is a difficult thing. Checking the actual speed is difficult, in particular because the IP protocol is "best-effort" which means you have no guarantee of delivery and the speed also depends on how much traffic there is on the route to the destination. If a router on the route runs on 100% it will drop everything which it cannot handle which will slow the whole thing down, obviously. So at busy times it gets slower. Also the distance of the connections slows traffic down, e.g. trans-continental lines are slower. Basically you can just see how fast it is at the moment.
What you can measure to some extent is the speed of your connection to your ISP. The only real way to check this speed is using a speed test. Google for internet speed test and bandwidth speed test and you'll find some sites which offer a test run. The problem: for accurate measurements the site should be very close to you, ideally placed on your ISP's server. Only then you will be able to measure how fast you'll get the data through the internet connection. If it is further away many other factors on the route can influence the result or reduct the overall throughput.
If you ISP does not have a internet line speed test on its website, then ask them to add one. :-) Until then, try speed tests from servers of them. If they have a download server where you can download larger files (e.g. some documentation or larger free software packages, should be some 10MB at least), try to do that. If you have a webspace with them you could also try to upload larger files there and download them again. This should give you a good picture how fast the internet line to the ISP. Always remember to do the tests a couple of time to get an average.
To see, how far away a site is, do a tracert: open a command prompt window and run the tracert command. To check the distance of www.linksys.com enter "tracert www.linksys.com". The less hops you have the close it is and the better the results for the tests.
Also, to check how far the router slows the line down: connect the computer directly to the modem and do the tests again.

My mid 2011 MacBook Air has slowed down significantly overnight?

Last night my MacBook Air was working fine.
When I went to use it this morning, it has slowed down significantly. It takes awhile for it to respond to trackpad movement or the keyboard. Opening finder is delayed now, opening any app is delayed now. Booting it back up takes extra long now, probably around a minute compared to thirty seconds before.
I've tried an SMC reset, repairing the disk and repairing disk permissions.
From what I can see, the hardware doesn't appear to be failing, but I could be wrong.
Can anyone help me out? What could possibly be going on with my MacBook? How did this happen overnight?

Your MacBook Air's memory is not upgradable, and as you already determined unused storage capacity is not a relevant factor.
There are many reasons a Mac may be performing slower than expected.
Back up your documents and everything else important to you before proceeding.
To help determine the possible causes of this behaviour read the following. None of what follows is intended to fix anything, but it will provide the additional information required to advance troubleshooting:
Boot OS X Recovery by holding ⌘ and r (two fingers) while you start your Mac. At the Mac OS X Utilities screen, select Disk Utility. Select your startup volume (usually named "Macintosh HD") and click the Repair Disk button. Describe any errors it reports in red.
When it finishes restart your Mac and test again for operation. If it's still not behaving as you expect it should, please post the results of EtreCheck in accordance with the following instructions:
Apple Support Communities contributor etresoft wrote a very useful app to quickly gather certain system information that may help point to a cause of this problem. Go to his website, download and run EtreCheck:
http://www.etresoft.com/etrecheck
Etrecheck will be in your Downloads folder. Open it from there. You may see the following dialog box:
Click Open - etresoft contributes to this forum frequently and can be considered a trustworthy developer.
It will take a moment to run as it collects its data.
Copy and paste its output in a reply.
Do not be concerned about anything that says "Problem" or “failed” or anything else that may appear in red.
EtreCheck was designed to remove any personal information (such as your computer's name and serial numbers) but if you see anything that looks like an email address or any other personal information that should not be divulged to others, please delete or obscure that information when you post the reply.
When you are finished with EtreCheck, quit the program. It occupies very little space, and you can keep it or drag it to the Trash as you wish.
After completing the above please determine if the problems also occur in "Safe Mode":
Safe Mode or "Safe Boot" is a troubleshooting mode that bypasses all third party system extensions and loads only required system components. Read about it: Starting up in Safe Mode
You must disable FileVault before you can start your Mac in Safe Mode.
Starting your Mac in Safe Mode will take longer than usual, graphics will not render smoothly, audio is disabled on some Macs, and some programs (iTunes for example) may not work at all.
Merely starting your Mac in Safe Mode is not intended to resolve the problem, it's to observe its performance without certain additional components.
To end Safe Mode restart your Mac normally. Shutdown will take longer as well.
To identify potential hardware problems: Apple Hardware Test.

Internet speeds keep slowing down to a crawl

I'm having a problem that has only developed in the past week which was during a time when I haven't changed any configurations in that period of time since my son was born a week ago yesterday and I obviously had more important things to do than mess with my network configurations. However, about 2 weeks prior to his birth, in the process of configuring a baby monitoring system with icam source, 3 weeks or so ago, I read that I might be able to improve my internet performance, I ran googles namebench a couple of times and added and re-ordered the DNS servers that had been listed prior to any problems developing based on its' reports. My internet speeds improved as a result of changing those DNS settings and stayed good until the past week. But of course, we now need to use the computer as part of our baby monitoring system and it's not working worth a **** and I'm getting frustrated since I can't put my finger on the problem and I don't really have time to spin around in circles right now. I'm sure it's probably something simple and I can't put my finger on it though. Sleep deprivation is new to me.......
I've kept running log of notes so this is a little deshoveled but I figured the more information I provide the better the chance someone might help me get this solved quickly.
In the last week, since my sons birth, my internet speeds would be okay after restarts and resetting everything, 2.5 Mbps or so but after a 10-15 minutes it starts to slow down to .2-.3 Mbps. I went thru all my network settings, restarted everything, repaired permissions, I've changed ethernet cables reset PRAM, firewall is running, stealth mode enabled, allow signed software incoming connections and my various other programs such as netsessionmac4f3c6b, skype, java, itunes, etc.
All sharing services off and pretty basic login items at startup including growl.
I had AT&T come out and check my DSL line and everything checked out on their end up to and out of the DSL modem based in their equipment tests.
The problem seems to start when I connect my imac (a fairly loaded 27" imac I got in Dec.) First off, as soon as the imac is connected to the modem via ethernet, the old ethernet modem flashes and continues to flash, even right after startup. So the tech thought something was running in the background and I can't figure out what. I looked through login items but don't see anything that would be a problem and am afraid to eliminate everything.
So I created a guest account to eliminate any login items (I think) and in I got 5.69 Mbps right off the bat. But after a minute or two, without changing anything my download speed slows down and I get for example .77 Mbps. The same thing happens with my administrator account on the imac. Fast speeds at startup and more importantly if I change the configuration by switching between ethernet and airport, I get fast speeds right after changing the configuration but after a minute or two I am well below 1.0 Mbps. I've got several network configurations with automatic, airport and ethernet set up in different ways including a clean ethernet connection with the original DNS settings.
I haven't set up an airport only account but that really isn't the way I want to hook up the computer that sits right next to the modem and runs my network. Restarting the old modem and direct connecting the computer to the modem results in the same thing happening.
I connected my ethernet from the (old?) modem directly to my ancient powerbook G4 and I got +5.6 Mbps download but it also slowed down to 300 kbps after 5 minutes or so the first time (old modem?)
Now to explain why I have "old?" listed above. I was then able to get a new DSL modem from AT&T, hook it up just fine, get enormously faster internet service in the 5,000 kbps only to have it slow back down to around 300 kpbs after connected for several minutes.
directly connected to imac-bypassing router
3,500 kbps
after 15 minutes-250 kbps
connected to imac thru router/time capsule with airport extreme
2500 kbps
after 15 minutes=166 kbps
directly connected to an older powerbook G4 with new modem
IP address of 192.168.1.64
5.65 Mbps on speedtest
after 15 minutes=5.67 Mbps
after 30 minutes= 5.59 Mbps
1 hour-5.66 Mbps
Very solid, stable readings for what I am used to. This would seem to isolate the problem to the imac.
directly connected to imac with new modem
IP address of 192.168.1.64
5.8 Mbps on speedtest
after 30 minutes= .60 Mbps-ping takes 250 ms
1 hour= .46 Mbps-ping takes 250 ms
Now a problem that only started last night after I hooked up the new modem and started up my old Time capsule/airport configuration, I got a message that said something to effect of "another device on this network is using computer IP address 192.168.1.64. So I tried manually changing last digit of the IP address on the computer to one number higher and it kept saying the start and end range were incorrect so I shut the airport station down since when it was connected, it would not allow the computer to connect thru the router via ethernet. I did a hard reset on the airport and I got it back up and running just fine but the internet speeds on the imacs' ethernet connections are so slow it's practically worthless. I also checked to see what was connected to my airport on any given occasion, 2 iphones, 2 pads, another imac running upstairs and a newer powerbook running icam source that is supposed to be the baby monitor. Except for the laptop everything can use "802.11n" but the powerbook only connects via 802.11g so I have set the airport to that limiting setting.
Any suggestions? Is there a way for me to log what is happening so I can report in more detail?

First thing is to check if the wireless is on a sensible channel: HomeHub doesn't always make sensible choices. Install inSSIDer on your laptop and see what other devices there are around and if there is any clash. Also, try moving the HomeHub around a little, even quite small differences can make a big difference to wireless signals.
You could run an ethernet cable from downstairs to upstairs. Easy to do, but can be a bit unsightly. If most of your devices are upstairs, you could use this cable to connect the modem to the HomeHub. If you have devices both up and down, you may want to keep the HomeHub downstairs and add a switch upstairs.
HomePlug may be suitable for you. If you search Amazon for HomePlug you will see a couple of kits for just over £30. Don't go for an 85Mbps one. A 200Mbps such as the TP-link or D-Link should be much better than wireless, but not as good as a cable.
Depending excatly how many devices you want to connect and where, you can pay more and have a builtin wireless at one end: http://www.amazon.co.uk/Devolo-1408-Wireless-N-HomePlug-Adapter/dp/B00472MMCQ/ref=sr_1_15?ie=UTF8&qi... Or it may be best for you to use the basic devices and add an old wireless router in switch mode.

System Slows Down and Freezes a LOT - Memory? Swap? Hard Drive? AV?

I have a 2.4 GHz 24" dual core iMac (identifier: 7,1). It worked fine for a good while and lately I've been having problems that seem to be getting worse (sometimes it seems to get better, then worse again). I have 4 GB of memory and I'm waiting for more RAM to upgrade it to 6 GB, since I hear that's the max anyone's run successfully in this model.
I've often had a number of programs running at once. Usually I have Firefox, Apple Mail, the KDE's Konsole and Kate (from MacPorts), Calendar, Stickies, MacIago, and Pysol running. (Yes, it helps to have a few games up for breaks when I'm working.) I know that's a lot, but for well over a year, I was working with that setup without problems, without getting stuck for long times with the pinwheel of death or anything like that.
I'm not exactly sure when it started, but now I have times where I will do something and the program will freeze and I get the pinwheel of death. I wait and after 30-60 seconds I can do something, but sometimes I still get hesitations and a start-freeze&stop-go mode for a bit. Sometimes this freezes the whole computer for up to 30-60 seconds and I can't even check another space with Command-Arrow.
I've been trying to backtrack to see if I could figure out what is causing this. Sometimes killing Firefox helps, so I switched to Chrome and watched for usage on Activity Monitor and Chrome uses FAR less CPU time. I have FlashBlock and AdBlocker Plus on Chrome (had it on Firefox, and before that, used NoScript for blocking). But I've seen this happen even without a browser open.
I suspect this could be an issue with swap, since recently I was watching and saw spikes in disk usage around these times, but I'm not sure of the correlation yet. Sometimes it seems like whenever I switch to a different program, whenever I use a new feature, I have to wait (as if it's loading library code or something).
Again, this is a recent issue.
I've upgraded from 10.6.5 to 10.6.6, so I don't know if that could effect this.
I've also started using the free version of Sophos Anti-Virus (which is apparently impossible to quit once it's running) and thought it might be doing scans.
What's also puzzled me is seeing that, with 4 GB of memory, Activity Monitor continually shows 1 GB free, but still indicates 2 GB swap files. So is there a reason 25% of my RAM is not being used?
I've also checked and found my drive to be heavily fragmented. I bought iDefrag, but it can't defrag it because there seem to be some bad blocks. Rather than mark them as bad every time it hits that spot, it just tells me it can't access that part of the drive.
My guess is that OS X, for some reason, leaves a set amount of memory free to use for various reasons and that, due to fragmentation, what was once an easy task of accessing something in a swap file is now time-consuming.
Is that on target? What else could be causing this problem? This is beginning to make my iMac unusable. If it's just swap file issues and defrag problems, I'm thinking of cloning my internal 320 GB drive to a 1 TB drive and replacing the original, then running iDefrag for good measure and continuing from there. (It seems like in OS X finding bad blocks is difficult, from what I've seen.)
What can I do and does anyone have any idea what the problem is? I'll be glad to give more details if that helps, but I've tried to include as much as I can already.
Thanks for any ideas or help.

Considering how I've solved this, I'm pretty much shocked that nobody had any answers for this.
I upgraded my drive from the standard 320 GB drive (which had about 79 GB free on it). I used Carbon Copy Clone to copy my system drive to a 1 TB drive, then swapped out the 320 GB for the 1 TB. When I booted it up and started working, I noticed it was back to the way things used to be: I could go from one program to another to another with NO problem at all. No pinwheels of death and I even added a few more more running programs and still had no issue.
I have no idea why, but before, even when there was a 2 GB swap file, 1 GB (out of 4 GB) of RAM was always unused. I don't know if the OS looks at what it can access and figures read/write times and uses that to figure out how much memory it can effectively handle or what, but now I'm using almost all of my 4 GB of RAM and the swap file is smaller than it was.
So upgrading to a larger drive made a HUGE difference. I'm willing to bet that defragging the old one would have made a difference as well, but there were problems with some files and iDefrag could not read them, which also makes me suspect that drive was on its last legs and close to failure. (That and bad sectors could also have slowed down swap, along with fragmentation issues.)
The solution was a bigger drive, but I suspect defragging the old drive might have helped (if it weren't for possible bad blocks). I know deleting files from the old drive did not help too much.

Report Slow Down

We have a report that used to produce a 1000+ page pdf in
about 2 minutes. It has gone to producing a 200+ page report in
about the same amount of time. No change to the data, database,
report or environment, it just suddenly slowed down and nothing
seems to be able to make it go back to decent performance on large
record sets.
Server reboots don't help, any ideas or thoughts would be
appreciated.

Hello
I followed some Donald's suggestion and went through some explanations he's given on its web site to try to figure out how could I speed up the database 10g since we migrated from 8i to 10g.
Here are default values in our 10g influencing the COST BASE OPTIMIZER
OPTIMIZER_FEATURES_ENABLE=10.2.0.1
OPTIMIZER_MODE=ALL_ROWS
OPTIMIZER_INDEX_COST_ADJ=100
I launched his script below provided to see time waited between full scan table
('db file scattered read representing by the c3 row and the
sequential read representing by the c4 row)
select
sum(a.time_waited_micro)/sum(a.total_waits)/1000000 c1,
sum(b.time_waited_micro)/sum(b.total_waits)/1000000 c2,
sum(a.total_waits) /
sum(a.total_waits + b.total_waits)
) * 100 c3,
sum(b.total_waits) /
sum(a.total_waits + b.total_waits)
) * 100 c4,
sum(b.time_waited_micro)/sum(b.total_waits))/
(sum(a.time_waited_micro)/sum(a.total_waits)
) * 100 c5
from
dba_hist_system_event a,
dba_hist_system_event b
where
a.snap_id = b.snap_id
and
a.event_name = 'db file scattered read'
and
b.event_name = 'db file sequential read';
there is the output of the script
C1 C2 C3 C4 C5
.002438964 .002888595 24.6526611 75.3473389 118.435332
So the time waited for full scan(c3) table is most faster than index sequential read(c4:index probe)
I changed the parameter OPTIMIZER_INDEX_COST_ADJ and OPTIMIZER_MODE
alter system set OPTIMIZER_INDEX_COST_ADJ=20 scope=both;
alter system set OPTIMIZER_MODE=FIRST_ROWS_1000 scope=both;
I lauched aigain the script above, but the output shows the result below
C1 C2 C3 C4 C5
.002438964 .002888595 24.6526611 75.3473389 118.435332
this output isn't different than the first one, so does this mean that INDEXES are not well designed or WHAT ELSE?.
Wich parameter could I enable or change to decrease the C4(index sequential read wait time?
Thank you for your help

Hello, I have iMAC 7,1, 20 inch, 4gigs of ram, Intel C2D perfectly runing OS Mavericks (10.9.5), will update to Yosemite, slow down my iMac?

Hello, I have iMAC 7,1, 20 inch,
4gigs of ram,
Intel C2D
ATI Radeon HD 2600 Pro 256 MB
HDD 320gig's
iMAC is perfectly runing OS Mavericks (10.9.5), with no lag, and no sluggish working, Multitasking is AWESOME (i have PC, with 8gigs of RAM, GeForce GTX570, etc etc), but i must say this MAC is running way better a way way, faster and I am Loving it!!! I am using it for making music, and video editing, i am Using Final Cut Pro x, Ableton 9, Logic Pro x, and bunch of other apps and it is working perfectly, and i am so shocked how machine old like this can do that stuff better than any PC i had, and not to mention that I use more time on iMAC than on PC, i use Windows PC just for occasional gaming, but that is like 10% of time, so i use my MAC in 90% of time.
So, enough of my iMAC. I am wondering if I update it to Yosemite, will my iMac slow down, and not continue to work like on Mavericks? Will it become sluggish and unresponsive? Will it affect reliability and stability which have on Mavericks? And will update delete my personal data (tons of Logic, Ableton and Garage band projects, and tons of Final Cut Pro projects), Applications (because I have some apps which is hard to find these days)...
I know bunch of you guys would tell me to backup my data, but i don't have External hard drive (they are pretty expensive in my Country), I have some friend who could borrow me External HDD, but they have their data on it, and they mostly use windows.. I did not use Time Machine yet, but i think probably it would format HDD on Macs partitions, so, i will do it on my own guys (don't judge me about that guys please)..
So if someone could answer me that, i will really appreciate that.
Thank you, and best Regards!!
Boris

Old Toad wrote:
I recommend you upgrade your RAM to at least 8 GB for good performance with the apps you're using. Also keep a minimum of 25-30 GB of free space on your boot drive for optimal system and application performance.
The maximum RAM a 7.1 iMac can address is 6GB, the OP can keep one of the 2GB DIMMs and then add a matching 4GB DIMM. If the OP decides to do this, please only purchase from Crucial or OWC at www.MacSales.com.
However as described on a 8 year old iMac, I'd stay with Mavericks and then when considering upgrading upgrade to a more up-to-date Mac.

I want to slow down my Apple TV...

Hi,
I want to slow down data going into my Apple TV...
Basically when one of the family uses Netflix or another source on the Apple TV, it is taking too much of the bandwidth available to the household. Living in a rural part of the UK we can get around 4Mb/s, and eeking it out amonst a big family is a real issue. Fibre is still a dream despite all the rhetoric spoken by BT and others.
Anyhow, I wondered whether our router could allow me to configure the Apple TV's IP address to have a maximum value. (Some routers do). Unfortunately oursis the basic ISP supplied jobee, and it will not allow this.
So, here's the reason for writing, and I wondered whether I could but a cap around 800Mb/s on data on the Apple TV unit. It currently is also using Wifi if that helps.
Any suggestions or configurations gratefuilly accepted.

Without knowing what make and model of router you have its impossible to know whether ti would allow it or not.
Your other option is too buy a router that will allow it, and daisy chain it to the ISPs modem. Then control the entire network through the new router.

Flash html5 - How can i make an internal movie clip slow down and stop when it get to a certain frame?

I am creating an automotive braking system using flash and have a wheel turning. I want the wheel to slow down and stop after the brake pedal is pushed at a certain frame. I know I could do this with frame by frame animation but was hoping there was a short cut - javascript?? If not the slowing down portion then is there code for just making the internal movie clip (wheel turning) to stop when it gets to a frame.? Thanks

you can use the ticker class to create a loop that you use to control the wheel's rotation or frame, TweenJS v0.6.0 API Documentation : Ticker

Could my nexus be slowing down UDP traffic?

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