From owner-freebsd-net@FreeBSD.ORG Sat May 20 12:12:09 2006 Return-Path: X-Original-To: freebsd-net@freebsd.org Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 71F4116A4A9 for ; Sat, 20 May 2006 12:12:09 +0000 (UTC) (envelope-from oxy@field.hu) Received: from green.field.hu (green.field.hu [217.20.130.28]) by mx1.FreeBSD.org (Postfix) with ESMTP id D07D043D64 for ; Sat, 20 May 2006 12:11:58 +0000 (GMT) (envelope-from oxy@field.hu) Received: from localhost (green.field.hu [217.20.130.28]) by green.field.hu (Postfix) with ESMTP id 396B1119CF6; Sat, 20 May 2006 14:11:09 +0200 (CEST) X-Virus-Scanned: by Amavisd-new (Spamassassin+Razor2+Pyzor+DCC+Bayes db, Clamd Antivirus) at field.hu Received: from green.field.hu ([217.20.130.28]) by localhost (green.field.hu [217.20.130.28]) (amavisd-new, port 10024) with ESMTP id wDy3vKOQx4DH; Sat, 20 May 2006 14:11:09 +0200 (CEST) Received: from oxy (dsl85-238-67-196.pool.tvnet.hu [85.238.67.196]) by green.field.hu (Postfix) with ESMTP id E4406119CAD; Sat, 20 May 2006 14:11:08 +0200 (CEST) Message-ID: <000801c67c06$973a34a0$0201a8c0@oxy> From: "OxY" To: "Peter Blok" , References: <001501c67c03$9c3457e0$8a01a8c0@ntpc> Date: Sat, 20 May 2006 14:11:57 +0200 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 Cc: Subject: Re: mbuf denied problem X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 20 May 2006 12:12:14 -0000 ----- Original Message ----- From: "Peter Blok" To: "'OxY'" ; Cc: "'Jin Guojun [VFFS]'" 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" > >