Date: Mon, 01 Dec 2008 10:53:28 -0300 From: Paulo Fragoso <paulo@nlink.com.br> To: freebsd-net@freebsd.org Subject: FreeBSD 7.1 tcp problem (syncache)? Message-ID: <4933EC58.5030204@nlink.com.br>
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Hi,
We was using one machine with FreeBSD 6.4-RELEASE running
apache-worker-2.2.3 + mysql, this server can answer high request from
one client using ab:
{client}$ ab -n 2000 -c 1000 http://system_using_6.4-RELEASE
...
Benchmarking ***** (be patient)
Completed 200 requests
Completed 400 requests
Completed 600 requests
Completed 800 requests
Completed 1000 requests
Completed 1200 requests
Completed 1400 requests
Completed 1600 requests
Completed 1800 requests
Finished 2000 requests
...
{client}$
Using other hardware whit FreeBSD 7.1-PRERELEASE running
apache-worker-2.2.9_5 + mysql, we have a poor result:
{client}$ ab -n 2000 -c 1000 http://system_using_7.1-PRERELEASE
...
Test aborted after 10 failures
apr_connect(): Invalid argument (22)
{client}$
Looking for a problem on new server log we found:
kernel: TCP: [client]:50197 to [server]:80 tcpflags 0x4<RST>;
syncache_chkrst: Spurious RST without matching syncache entry (possibly
syncookie only), segment ignored
kernel: TCP: [client]:53845 to [server]:80 tcpflags 0x4<RST>;
syncache_chkrst: Spurious RST without matching syncache entry (possibly
syncookie only), segment ignored
kernel: TCP: [client]:53845 to [server]:80 tcpflags 0x4<RST>;
syncache_chkrst: Spurious RST without matching syncache entry (possibly
syncookie only), segment ignored
All sysctl and apache conf are same on both server, is there a tcp
problem with FreeBSD 7.x?
Paulo Fragoso.
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