Messages in this thread | | | Subject | Re: Apache problem with 2.2.12 (network related) | Date | Tue, 21 Sep 1999 11:16:21 +0100 (BST) | From | Alan Cox <> |
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> The server is quite busy (25 req/s, load between 2 and 4). Every 10 or 15 > minutes the server completely stops accepting new HTTP requests, I can see > the number of open TCP connections decrease from 1000 or more to a couple
But are there lots of requests in SYN_RECV queued ?
> apache immediately cures the problem. I have tried to compile Apache with > and without -DSINGLE_LISTEN_UNSERIALIZED_ACCEPT option, no noticeable > diffrence ... > > Any ideas ?
Turn on syn cookies in case its an attack triggering this (echo "1" > /proc/sys/net/ipv4/tcp_syncookies )
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