Date: Tue, 30 Oct 2012 10:45:35 -0700 From: Alfred Perlstein <bright@mu.org> To: Navdeep Parhar <np@FreeBSD.org> Cc: FreeBSD-Stable ML <freebsd-stable@freebsd.org>, Adam Strohl <adams-freebsd@ateamsystems.com> Subject: Re: No buffer space available / tcp_inpcb value Message-ID: <5090123F.90105@mu.org> In-Reply-To: <509008D9.2090006@FreeBSD.org> References: <508FD46D.3040608@ateamsystems.com> <509008D9.2090006@FreeBSD.org>
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How much memory is in this machine? maxsockets is in turn clipped by "nmbclusters" which is in turn clipped by "maxusers" which is limited to 384 MAXIMUM unless you're running -CURRENT. On 10/30/12 10:05 AM, Navdeep Parhar wrote: > On 10/30/12 06:21, Adam Strohl 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? > > kern.ipc.maxsockets controls this limit. See in_pcbinfo_init() for > details. > > Regards, > Navdeep > _______________________________________________ > 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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