some previous list mail shows that SYN_RECV is caused by routing problems as
well. Check which IP receives SYN_RECV. Increasing the tcp_max_syn_backlog
could solve the problem.
Test with real environment of 10req/sec as you reported earlier.
DNS lookups sounded like a problem from your previous mail. Check if your
DNS is correctly setup and that routing between your DNS and squid is
correct.
Do a check on the combination of src and dest IP in netstat -an | grep
SYN_RECV and see which ones are max.
I do
netstat -Mn | sort | cut -c15-56 | sort | uniq -c | sort -r
to find out the combinations
HTH
Received on Tue Aug 21 2001 - 01:47:36 MDT
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