Re: slow tcp handshake

2009-10-22 Thread David Birdsong
On Wed, Oct 21, 2009 at 1:36 PM, Willy Tarreau wrote: > On Wed, Oct 21, 2009 at 10:27:23AM -0700, David Birdsong wrote: >> On Wed, Oct 21, 2009 at 4:31 AM, John Lauro >> wrote: >> > You could bump your range up.  It might help if you have a high connection >> > rate and not just a high number of

Re: slow tcp handshake

2009-10-21 Thread Willy Tarreau
On Wed, Oct 21, 2009 at 10:27:23AM -0700, David Birdsong wrote: > On Wed, Oct 21, 2009 at 4:31 AM, John Lauro > wrote: > > You could bump your range up.  It might help if you have a high connection > > rate and not just a high number of connections. > > > i dont have a high connection rate. my c

Re: slow tcp handshake

2009-10-21 Thread David Birdsong
nothing at all, no list to match on that output >> >> > >> > >> >> also, i've disabled tcp_sack with no effect >> > >> >> -Original Message- >> >> From: David Birdsong [mailto:david.birds...@gmail.com] >> >> Sent:

Re: slow tcp handshake

2009-10-21 Thread David Birdsong
fd's problem before with lighttpd. it is quite verbose about running out of file descriptors. > >> -Original Message- >> From: David Birdsong [mailto:david.birds...@gmail.com] >> Sent: Wednesday, October 21, 2009 7:07 AM >> To: John Lauro >> Cc: haproxy

RE: slow tcp handshake

2009-10-21 Thread John Lauro
...@gmail.com] > Sent: Wednesday, October 21, 2009 7:07 AM > To: John Lauro > Cc: haproxy > Subject: Re: slow tcp handshake > > On Wed, Oct 21, 2009 at 3:51 AM, John Lauro > wrote: > > You mention loopback interface.  You could be running out of port > numbers to > >

RE: slow tcp handshake

2009-10-21 Thread John Lauro
nge under "netstat -s" > -Original Message- > From: David Birdsong [mailto:david.birds...@gmail.com] > Sent: Wednesday, October 21, 2009 7:07 AM > To: John Lauro > Cc: haproxy > Subject: Re: slow tcp handshake > > On Wed, Oct 21, 2009 at 3:51 AM, John Lau

Re: slow tcp handshake

2009-10-21 Thread David Birdsong
hat's netstat -s | grep -i list    show on the server? nothing at all, no list to match on that output > > also, i've disabled tcp_sack with no effect > >> -Original Message- >> From: David Birdsong [mailto:david.birds...@gmail.com] >> Sent: Wednesday,

RE: slow tcp handshake

2009-10-21 Thread John Lauro
rds...@gmail.com] > Sent: Wednesday, October 21, 2009 6:36 AM > To: haproxy > Subject: slow tcp handshake > > This isn't haproxy related, but this list is so knowledgable on > network problems. > > I'm troubleshooting our slow webserver and I've drilled d

slow tcp handshake

2009-10-21 Thread David Birdsong
This isn't haproxy related, but this list is so knowledgable on network problems. I'm troubleshooting our slow webserver and I've drilled down to a TCP handshake taking up to 10 seconds. This handshake doesn't actually really start until the client sends it's 3rd syn. The first 2 syn's are compl