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jackhab
Asked: 2010-03-03 01:06:07 +0800 CST

How to enable TCP Vegas on Centos 5.4?

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I'm trying to enable TCP Vegas congestion control on Centos 5.4 box. According to Vegas home page it is as simple as echo 1 > /proc/sys/net/ipv4/tcp_vegas_cong_avoid but this file does not exist. I found kernel module /lib/modules/2.6.18-164.el5/kernel/net/ipv4/tcp_vegas.ko but insmodding it does not cause the file to appear. Any suggestions?

Thanks.

networking tcp tcpip

1 Answers

  1. Best Answer

    The sysfs interface may have changed since the webpage you've read were written.

    Looking at my CentOS 5 box, it seems you might have to do something along the lines of

    echo vegas > /proc/sys/net/ipv4/tcp_congestion_control

    On kernels newer than 2.6.20 the possible values are listed in tcp_available_congestion_control, but I'm uncertain of where/if it's listed for prior kernels.

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