From owner-freebsd-net@FreeBSD.ORG Sat May 20 11:55:06 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 DADFB16A422 for ; Sat, 20 May 2006 11:55:05 +0000 (UTC) (envelope-from pblok@bsd4all.org) Received: from altrade.nijmegen.internl.net (altrade.nijmegen.internl.net [217.149.192.18]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4442C43D46 for ; Sat, 20 May 2006 11:55:04 +0000 (GMT) (envelope-from pblok@bsd4all.org) Received: from mail.bsd4all.org by altrade.nijmegen.internl.net via 113-9.bbned.dsl.internl.net [82.215.9.113] with ESMTP id k4KBstoT015790 (8.13.2/2.04); Sat, 20 May 2006 13:54:55 +0200 (MET DST) Received: from localhost (localhost.homebrew.bsd4all.org [127.0.0.1]) by mail.bsd4all.org (Postfix) with ESMTP id DD1D15CF7; Sat, 20 May 2006 13:54:54 +0200 (CEST) X-Virus-Scanned: amavisd-new at bsd4all.org Received: from mail.bsd4all.org ([127.0.0.1]) by localhost (fwgw.homebrew.bsd4all.org [127.0.0.1]) (amavisd-new, port 10024) with LMTP id LCQovZUnJb3V; Sat, 20 May 2006 13:54:45 +0200 (CEST) Received: from ntpc (ntpc [192.168.1.138]) by mail.bsd4all.org (Postfix) with ESMTP id 4FAEB5CB6; Sat, 20 May 2006 13:54:45 +0200 (CEST) From: "Peter Blok" To: "'OxY'" , Date: Sat, 20 May 2006 13:50:37 +0200 Message-ID: <001501c67c03$9c3457e0$8a01a8c0@ntpc> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 11 In-Reply-To: <002a01c67ac7$45354f40$0201a8c0@oxy> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 Thread-Index: AcZ6x3Np/uqvwjACQ7a3Z3RRbn+sPgBOfLFw Cc: "'Jin Guojun \[VFFS\]'" 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 11:55:06 -0000 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); -----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"