On Sat, Mar 15, 2008 at 09:47:24AM +0100, Gabriel Barazer wrote:
Feel free to repost the whole issue overthere (along with your new tests)
if you don't get useful replies in a few days.
By the way thanks for replying. It's hard to explain and describe a problem when you know people will ask you hundreds of questions related to application-level problems, or not reply because web/mysql problems are so common and generally not related to any kernel issue.
What caught my attention was the usual "3s delay", which is purely TCP
and application-independant.
Also, you say you have netfilter with conntrack. Is this on the client ?I have the conntrack on both the client and server, and unfortunately can't disable it now on the client (I use it only for the REDIRECT target on a precise destination address and port, not MySQL related), however I will test today and disable it on the server, after I get some sleep (although I think the issue is on the client).
If so, you should try disabling it to rule out any possible bug in the
connection tracking.
I'm sure it's a client issue too, that's why it would be reasonable to
be able to try without conntrack. Can't you use a TCP proxy instead of
REDIRECT ? Also, you said that you also noticed the same behaviour in
other environments, maybe there you can disable conntrack ?