Date: Sat, 20 May 2006 14:22:22 +0200 From: "Peter Blok" <pblok@bsd4all.org> To: "'OxY'" <oxy@field.hu>, <freebsd-net@freebsd.org> Subject: RE: mbuf denied problem Message-ID: <001a01c67c08$0b96c290$8a01a8c0@ntpc> In-Reply-To: <000801c67c06$973a34a0$0201a8c0@oxy>
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Well, I'm not sure the developer's have seen it due to the fact that I was not able to post to the list somehow. And on the other hand I could have opened up a PR as well. Peter -----Original Message----- From: owner-freebsd-net@freebsd.org [mailto:owner-freebsd-net@freebsd.org] On Behalf Of OxY Sent: Saturday, May 20, 2006 2:12 PM To: Peter Blok; freebsd-net@freebsd.org Subject: Re: mbuf denied problem ----- Original Message ----- From: "Peter Blok" <pblok@bsd4all.org> To: "'OxY'" <oxy@field.hu>; <freebsd-net@freebsd.org> Cc: "'Jin Guojun [VFFS]'" <j_guojun@lbl.gov> Sent: Saturday, May 20, 2006 1:50 PM Subject: RE: mbuf denied problem > Hi, > > I have posted a reply to similar questions a couple of times. Although I'm > subscribed to freebsd-net I never saw the answer appear in the list. > > The ... denied counts is coming from calling uma_reclaim, which will in > the > end call uma_zfree_internal which is increasing the fail counter. > > I am not sure, but I believe the mbuf and cluster zones are static. So if > I > set the UMA_ZONE_NOFREE flag in kern_mbuf.c, no attempt will be made to do > a > free at all. > > Here's my patch. It works, but I'm not sure it is ok. > > --- sys/kern/kern_mbuf.c.orig Sun Apr 9 13:32:51 2006 > +++ sys/kern/kern_mbuf.c Sun Apr 9 13:33:19 2006 > @@ -168,7 +168,7 @@ > #else > NULL, NULL, > #endif > - MSIZE - 1, UMA_ZONE_MAXBUCKET); > + MSIZE - 1, UMA_ZONE_MAXBUCKET|UMA_ZONE_NOFREE); > > zone_clust = uma_zcreate(MBUF_CLUSTER_MEM_NAME, MCLBYTES, > mb_ctor_clust, mb_dtor_clust, > @@ -177,7 +177,7 @@ > #else > NULL, NULL, > #endif > - UMA_ALIGN_PTR, UMA_ZONE_REFCNT); > + UMA_ALIGN_PTR, UMA_ZONE_REFCNT|UMA_ZONE_NOFREE); > > if (nmbclusters > 0) > uma_zone_set_max(zone_clust, nmbclusters); > thank you, i'll try it in a couple of days! it's sad that it's a returning question and no patch from the developers. > -----Original Message----- > From: owner-freebsd-net@freebsd.org [mailto:owner-freebsd-net@freebsd.org] > On Behalf Of OxY > Sent: Friday, May 19, 2006 12:06 AM > To: freebsd-net@freebsd.org > Cc: Jin Guojun [VFFS] > Subject: mbuf denied problem > > hi! > > i have a problem with mbuf... > when all my free memory is gone ( i have 2gb ram) and > memory allocation looks like this: > > 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"
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