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Old 10-13-2008, 09:06 PM   #1
bbressler
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Slow Network -- Slack 12.0


Trying to trouble-shoot a slow network problem.

I do a lot of work on remote desktop, using rdesktop. After I installed and began using 12.0, I've noticed that it takes a REALLY long time to draw screens. Other symptoms include a long time for FTP login to display (from XP client). Browsing is decent enough, but I think it's slow as well.

When I was running SLack 11, (10.2 before that), everything was just as fast (or faster) than windows. Now, it seems like it's way slower....like I'm running over a modem.

Any ideas on what I can check to see WHY it's running slow?

Thanks
 
Old 10-13-2008, 09:34 PM   #2
T3slider
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You can try blacklisting the ipv6 module, which gives some people a lot of trouble. In /etc/modprobe.d/blacklist, add the following line:
Code:
blacklist ipv6
Then restart your PC (or, if you don't want to restart, you could remove the module using `modprobe -r ipv6` or `rmmod ipv6`).
 
Old 10-13-2008, 09:36 PM   #3
astrogeek
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SATA drive one possibility

I recently had a similar problem with Slackware 12.1 - everything slow, turned out to be using wrong driver for hard drive resulting in it not using DMA, see the thread here...

http://www.linuxquestions.org/questi...laptop-675183/

As a quick test, if your hard drive is mounted as /dev/hda (or /dev/hd_ something), you can quickly see if it is using DMA by cat /proc/ide/hda/settings and look for the line using_dma, if the value is zero it is not using DMA and that thread probably applies to you.
 
Old 10-13-2008, 09:40 PM   #4
bbressler
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I found that earlier, tried doing it but it didn't seem to help.

When I do a modprobe -l, I see some items like this:

/lib/modules/2.6.21.5-smp/kernel/net/ipv6/ip6_tunnel.ko
/lib/modules/2.6.21.5-smp/kernel/net/ipv6/xfrm6_mode_tunnel.ko
/lib/modules/2.6.21.5-smp/kernel/net/ipv6/esp6.ko
/lib/modules/2.6.21.5-smp/kernel/net/ipv6/ipv6.ko
/lib/modules/2.6.21.5-smp/kernel/net/ipv6/ah6.ko

but a "# rmmod ipv6" shows this:
ERROR: Module ipv6 does not exist in /proc/modules

Thanks
 
Old 10-13-2008, 09:42 PM   #5
bbressler
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Quote:
Originally Posted by astrogeek View Post
I recently had a similar problem with Slackware 12.1 - everything slow, turned out to be using wrong driver for hard drive resulting in it not using DMA, see the thread here...

http://www.linuxquestions.org/questi...laptop-675183/

As a quick test, if your hard drive is mounted as /dev/hda (or /dev/hd_ something), you can quickly see if it is using DMA by cat /proc/ide/hda/settings and look for the line using_dma, if the value is zero it is not using DMA and that thread probably applies to you.
Yes, it's using dma...
 
  


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