Date: Sun, 21 May 2006 23:01:06 +0200 From: "Peter J. Blok" <pblok@bsd4all.org> To: freebsd-net@freebsd.org Cc: "Jin Guojun \[VFFS\]" <j_guojun@lbl.gov>, Robert Watson <rwatson@freebsd.org>, OxY <oxy@field.hu> Subject: Re: mbuf denied problem Message-ID: <200605212301.08355.pblok@bsd4all.org> In-Reply-To: <20060521202612.D8068@fledge.watson.org> References: <002a01c67ac7$45354f40$0201a8c0@oxy> <20060520124702.B8068@fledge.watson.org> <20060521202612.D8068@fledge.watson.org>
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On Sunday 21 May 2006 21:28, Robert Watson wrote: > On Sat, 20 May 2006, Robert Watson wrote: > > On Fri, 19 May 2006, OxY wrote: > >> i have a problem with mbuf... when all my free memory is gone ( i have > >> 2gb ram) and memory allocation looks like this: > > > > I recently received an informal problem report that there is a problem > > with the "denied" statistics gathering, so I think it's likely that's > > what is going on here. I'll follow up with the submitter and see if we > > can't figure out something more definite. > > I have received some further information on the problem from the reporter. > Could you give this patch a try and see what effect it has? I already had made an identical patch and it worked. This seems to be the problem. > > Index: uma_core.c > =================================================================== > RCS file: /home/ncvs/src/sys/vm/uma_core.c,v > retrieving revision 1.136 > diff -u -r1.136 uma_core.c > --- uma_core.c 11 Feb 2006 19:20:56 -0000 1.136 > +++ uma_core.c 21 May 2006 19:25:56 -0000 > @@ -2413,8 +2413,7 @@ > * If nothing else caught this, we'll just do an internal free. > */ > zfree_internal: > - uma_zfree_internal(zone, item, udata, SKIP_DTOR, ZFREE_STATFAIL | > - ZFREE_STATFREE); > + uma_zfree_internal(zone, item, udata, SKIP_DTOR, ZFREE_STATFREE); > > return; > } > > Technically, there has been an allocation failure in this case in > identifying a bucket to return the item to, but since the overall case is a > free, generating a failure statistics update seems undesirable. > > Thanks, > > Robert N M Watson > > > Robert N M Watson > > > >> Mem: 30M Active, 1607M Inact, 245M Wired, 84M Cache, 214M Buf, 3028K > >> Free Swap: 695M Total, 695M Free > >> > >> mbuf starts to deny... > >> netstat -m show 0 deny till has memory, after that i see this: > >> > >> Field root# netstat -m > >> 629/466/1095 mbufs in use (current/cache/total) > >> 512/176/688/65536 mbuf clusters in use (current/cache/total/max) > >> 512/133 mbuf+clusters out of packet secondary zone in use > >> (current/cache) 0/0/0/0 4k (page size) jumbo clusters in use > >> (current/cache/total/max) 0/0/0/0 9k jumbo clusters in use > >> (current/cache/total/max) > >> 0/0/0/0 16k jumbo clusters in use (current/cache/total/max) > >> 1181K/468K/1649K bytes allocated to network (current/cache/total) > >> 7410219/101093/101499 requests for mbufs denied > >> (mbufs/clusters/mbuf+clusters) > >> 0/0/0 requests for jumbo clusters denied (4k/9k/16k) > >> 0/0/0 sfbufs in use (current/peak/max) > >> 0 requests for sfbufs denied > >> 0 requests for sfbufs delayed > >> 25288 requests for I/O initiated by sendfile > >> 65 calls to protocol drain routines > >> > >> this is my sysctl.conf: > >> net.inet.tcp.delayed_ack=0 > >> net.inet.ip.intr_queue_maxlen=400 > >> net.inet.tcp.inflight.enable=0 > >> net.route.netisr_maxqlen=512 > >> kern.ipc.somaxconn=1024 > >> > >> should i attach any other conf/log,etc? > >> thanks! > >> _______________________________________________ > >> freebsd-net@freebsd.org mailing list > >> http://lists.freebsd.org/mailman/listinfo/freebsd-net > >> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > > > > _______________________________________________ > > freebsd-net@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-net > > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
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