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I have setup a test network with a few app servers and a lvs machine
with one client. I seems to have issues topping 5000 connections per
second.
Here is the setup
2 app servers with 2.4.20 patched with the hidden patch running thttpd
1 lvs machine running keepalived using rr sched. Running kernel 2.4.20
with 1.0.7 of the ipvs patch
One test machine running 2.4.20 with no patches.
All pentium 3 700MHz with 128Mb ram or above
I have been using ab with the following command line
ab -n 10000 -c 1000 http://192.168.55.3/test.html
I have done the following to correct the situation
Read http://www.linux-vs.org/performance/lvs.ps.gz and according to the
suggestions in that ran the following on all of the machines.
echo 1048576 > /proc/sys/net/core/rmem_max
echo 1048576 > /proc/sys/net/core/rmem_default
echo 1048576 > /proc/sys/net/core/wmem_default
echo 1048576 > /proc/sys/net/core/wmem_max
ulimit -n 10000
sysctl -w 'fs.file-max=150000'
sysctl -w 'fs.inode-max=32768'
sysctl -w 'net.ipv4.ip_local_port_range=1024 40000'
I also tried to patch httperf as per their suggestion but when I did
this it just sat and ate cpu time.
I have tried the above tests (ab) on both the real server and the
virtual server and I get about the same results. It is not a bandwidth
issue as all of the machines are on a 100Mbit switch and it is not
coming close to maxing out the bandwidth of any of the machines.
I have also checked that it is not the test client machine by adding
another client machine in as well and if I add the connections per
second of both of them I get about the same results.
If anyone has any suggestions on how I should proceed then that would be
most excellent, use kernel 2.5? change the web server? what ever you
think it could be.
Thanks in advance, kind regards - RL
--
MSN:lazzurs@xxxxxxxxxxxxxx |"All that is etched in stone
Yahoo:admroblaz AIM:admroblaz |is truly only scribbled in
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e-mail:lazzurs@xxxxxxxxxxxxxxxxx|Take care all - Rob Laz
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