[lkml]   [2001]   [Oct]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectThroughput @100Mbs on link of ~10ms latency

Can someone give me a pointer to a FAQ on how to tune a 2.4 machine to
achieve high throughput (approx i/f speed 100Mbits/sec) on a link with the
following characteristics:

Latency Throughput

9-10ms 3.8 MByte/s
3-4ms 7-8MByte/s

I have implemented:

echo "4096 87380 4194304" > /proc/sys/net/ipv4/tcp_rmem
echo "4096 65536 4194304" > /proc/sys/net/ipv4/tcp_wmem


this lifted the performance from ~1MByte/s to the 3.8 above.

When the receiving machine is freebsd I get 10.05 MBytes/s which
is interesting - but when sending from BSD I get the same rate.


[root@tsaturn ncftp]# lsmod
Module Size Used by
autofs 11264 1 (autoclean)
3c59x 25344 1 (autoclean)
e100 44240 1 (autoclean)
ipchains 38976 0 (unused)

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:04    [W:0.050 / U:1.168 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site