Date: Tue, 30 Oct 2012 09:05:34 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Adam Strohl <adams-freebsd@ateamsystems.com> Cc: FreeBSD-Stable ML <freebsd-stable@freebsd.org> Subject: Re: No buffer space available / tcp_inpcb value Message-ID: <CAJ-VmonvY6hau%2BLpaa5b0hi%2Bssx_Y%2BdQ5JheDretc1jY9erpAg@mail.gmail.com> In-Reply-To: <508FD46D.3040608@ateamsystems.com> References: <508FD46D.3040608@ateamsystems.com>
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Check the output of 'netstat -mb', maybe you're also running out of mbufs? Adrian On 30 October 2012 06:21, Adam Strohl <adams-freebsd@ateamsystems.com> wrote: > Hey -STABLE, > > I've got a client who we've setup a FreeBSD cluster for with about a dozens > servers, all behind two front end proxies/LBs/firewalls which also act as > NAT gateways for the internal servers. > > On the active front end proxy we've started seeing "fatal: socket: No buffer > space available" errors during high-peak times. I can see in vmstat -z > that this is what is getting denied: > > ITEM SIZE LIMIT USED FREE REQ FAIL SLEEP > tcp_inpcb: 392, 32770, 19398, 13372,1449734621,6312858, 0 > > We've got a lot of the other values bumped, and it appears to be this input > limit that is getting hit. There are no other non-zero FAILed counters > except 64 and 128 buckets which I believe are normal. > > I cannot seem to find the sysctl (or equiv) that controls this limit though, > or even what it is. Anyone know? > > I'm obviously in need of this specific answer, but overall is there a codex > of vmstat -z's items that explains this that I have just not found in my > searches? This isn't the first time I've had to dig into a value like this > to increase it's limit, but this time I'm not turning anything up. > > Any thoughts/ideas appreciated! > > -- > Adam Strohl > http://www.ateamsystems.com/ > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"
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