Date: Fri, 26 Feb 2010 23:12:39 +0100 From: Willem Jan Withagen <wjw@digiware.nl> To: =?ISO-8859-1?Q?Gerrit_K=FChn?= <gerrit@pmp.uni-hannover.de> Cc: stable@freebsd.org, Jack Vogel <jfvogel@gmail.com>, Jeremy Chadwick <freebsd@jdc.parodius.com> Subject: Re: mbuf leakage with nfs/zfs? Message-ID: <4B884757.9040001@digiware.nl> In-Reply-To: <20100226224320.8c4259bf.gerrit@pmp.uni-hannover.de> References: <4B86F384.3010308@digiware.nl> <2a41acea1002251459v40e8c6ddxd0437decbada4594@mail.gmail.com> <4B8795B1.4020006@digiware.nl> <20100226120339.GB17798@icarus.home.lan> <20100226133138.d47dd080.gerrit@pmp.uni-hannover.de> <20100226134429.041ea6f2.gerrit@pmp.uni-hannover.de> <E1Nkzry-0000AC-0S@kabab.cs.huji.ac.il> <20100226141754.86ae5a3f.gerrit@pmp.uni-hannover.de> <E1Nl1mb-0002Mx-M9@kabab.cs.huji.ac.il> <E1Nl2JK-00033U-Fw@kabab.cs.huji.ac.il> <20100226174021.8feadad9.gerrit@pmp.uni-hannover.de> <E1Nl6VA-000557-D9@kabab.cs.huji.ac.il> <20100226224320.8c4259bf.gerrit@pmp.uni-hannover.de>
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On 26-2-2010 22:43, Gerrit Kühn wrote: > DB> I'll have to do some packet snooping to check if it's TCP or UDP nfs > DB> traffic, since some of the clients are Linux ... > > I have Linux clients, too. Some use tcp, some udp. I have Linux and FreeBSD clients running. The build system runs on Linux. All Linux's are UDP.... Also connect the build machine to the old 7.2/amd64/bge0/ufs machine, but there the count doesn't go over a few 1000 mbufs. > It did not help. In the meantime the values read > > 20555/1465/22020 mbufs in use (current/cache/total) > 19529/1029/20558/65000 mbuf clusters in use (current/cache/total/max) > 19529/823 mbuf+clusters out of packet secondary zone in use (current/cache) Mine are now: 41533/2402/43935 mbufs in use (current/cache/total) 41454/1572/43026/262144 mbuf clusters in use (current/cache/total/max) 39241/823 mbuf+clusters out of packet secondary zone in use (current/cache) > There certainly is. I wonder when this came in and why it has gone > unnoticed so far. Probably not all people serving nfs from zfs see this, > or this would have popped up earlier. Maybe the Linux clients are somehow > triggering the issue? Or did it start with the import of zvol version 14? > Unfortunately I have upgraded my pool, so I cannot easily go back to 8-REL > to test this (otoh, I need a stable server quite urgently). 'mmmm, I did set the zvol version this morning also to 14 but I think that I ran into trouble already when still running version 13. And the server was used as storage for the build system since the last 2 weeks. Uptil yesterday without much trouble. --WjW
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