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TCP tunning parameters

Submitted by Anonymous
on December 16, 2003 - 4:30am

Dear all

i have compiled kernel 2.4.20 with Andrew Morton low-lentency-patch.
i did tcp benchmarking with tbench but i am getting very low tcp throught as compare to stock kernel

108 Mbit/Sec Average ( Redhat Stock kernel 2.4.20)
143 Mbit/Sec Avarage ( Kernel 2.4.20 with low-lentency-patch )

any idea how to get maxium tcp performance from box

Thanks

Talha

‹ Linux: 2.6.0-test11-mm1; The Fate Of The -mm Patchset Adaptive Load Balancing on 2.4.23 ›

TCP

midian
on
December 16, 2003 - 5:44am

I would suggest you to try out vanilla 2.4.23 kernel. Myself, I have no problem squeezing the maximum tcp performance from my fileserv (Running 2.6.0-test11) and router (Running 2.4.23).

And if you still have problems with tcp performance, you could try to search the lkml (Sorry, it may be finnish, just replace .fi with .com if it is) about posts of it.
Good luck.
--
Regards,
Markus Hästbacka

I will try that

Anonymous
on
December 16, 2003 - 10:21am

Thanks for your reply . will try that

Do you like to share that parameter you use for tcp tunning

which linux kernel is hotest these days for performance

i just want performance hungray machine . which i will use on for my cache servers

Thanks

Talha

re: I will try that

midian
on
December 17, 2003 - 6:04am

I've not made anykind of tuning for my TCP performance, really.
It was great from the beginning I installed Linux.
My problems have mostly been that the disk is slower than the network.

I think the 2.6 series is best for network performance, but it may be unstable on some systems. If you are intrested in upgrading to 2.6 you may want to read the howto.

I noticed my bad disk performance when I installed a new 120Gb disk on my server. (It was a Pentium 133MHz back then)
I could only move 2-3Mb/s, now I can move 13-15Mb/sec over nfs/smbfs.

So I think you could check if your disks are any faster than the network. If not, then that might be the problem.

Just a suggestion.
Good luck for finding the problem.
--
Regards,
Markus

i have 3 SCSI disk which i th

Anonymous
on
December 17, 2003 - 7:51am

i have 3 SCSI disk which i think is performance ok check through iostat command

yes i 2.6 many good features i will definitly try that

Thanks for your help

Regards

Talha

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