Date: Fri, 28 Feb 2014 13:11:27 -0600 From: Adam Vande More <amvandemore@gmail.com> To: Anton Sayetsky <vsjcfm@gmail.com> Cc: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: ZFS and Wired memory, again Message-ID: <CA%2BtpaK3aQ60CrrVksb69muUXGhTD5Vtn%2Bpu6G7g=4E9eCLC_OQ@mail.gmail.com> In-Reply-To: <CAFG2KCLeaucA=3aJ%2B_NzsfzOfVNXtiCnrRWwCMhW==-JT7wkCA@mail.gmail.com> References: <CAFG2KC%2BZSHEVFbpPD9e1QHRdY=Sd6EuAD80vyDLDDQcpgCQNhA@mail.gmail.com> <530F6475.4090508@gmail.com> <CA%2BD9QhtVkYNoEGwhx-EJi9X1jr_UN2rgYxbZtA99qcT4UA-8kA@mail.gmail.com> <CAFG2KCLSSBwR5JbLdnVPy6E8UeGiWWCGsFcEjeU%2BeU5F2Xm%2BSw@mail.gmail.com> <f6dfa6229d7707dd5657fae427f79ba2@webmail.lerctr.org> <CAFG2KCLeaucA=3aJ%2B_NzsfzOfVNXtiCnrRWwCMhW==-JT7wkCA@mail.gmail.com>
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On Fri, Feb 28, 2014 at 12:53 PM, Anton Sayetsky <vsjcfm@gmail.com> wrote: > 2014-02-28 20:42 GMT+02:00 Larry Rosenman <ler@lerctr.org>: > > On 2014-02-28 12:31, Anton Sayetsky wrote: > >> > >> 2014-02-28 13:47 GMT+02:00 Matthias Gamsjager <mgamsjager@gmail.com>: > >>>>> > >>>>> > >>>> > >>>> +1 from me, FreeBSD 10, uma=0 > >>>> > >>>> 52 processes: 2 running, 49 sleeping, 1 zombie > >>>> CPU: 0.0% user, 0.0% nice, 0.0% system, 0.4% interrupt, 99.6% idle > >>>> Mem: 31M Active, 16K Inact, 3352M Wired, 17M Cache, 48M Free > >>>> ARC: 1838M Total, 110M MFU, 18M MRU, 548K Anon, 1876M Header, 75M > Other > >>>> Swap: 4096M Total, 126M Used, 3969M Free, 3% Inuse > >>>> > >>>> Machine is plain dead. Running database or squid or anything causes > >>>> excessive swapping. This is the state when I disabled all payload, > with > >>>> everything started swap goes to 500M and machine is burning disks. > >>>> > >>> > >>> I wonder do you use any zfs tuning? Like max arc size? Wonder if > setting > >>> that to a reasonable amount would help. > >> > >> Please read carefully my first message. No any tuning (configs > >> posted), and problem is not that ZFS uses big amount of memory. I'm > >> experiencing exactly one problem - Wired mem is significantly larger > >> than ARC. > >> E.g. if my ARC size is 2048M, I'm expecting that Wired will not > >> consume more than ARC+~150M. > >> _______________________________________________ > >> freebsd-fs@freebsd.org mailing list > >> http://lists.freebsd.org/mailman/listinfo/freebsd-fs > >> To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" > > > > Other pieces of the system used wired memory...... > > > > Have you investigated that as well? > And again - this has detailed explanation in the first letter. In short: > 1. I've booted the system without any memory hungry services (only > basic like cron, powerd). Wired is 95M, ARC is 25M. > 2. Then I started reading ZFS pool (tar cpf /dev/null > /pool/mountpoint). ARC - 2048M, Wired - ~2800M. > WTF? Who eats more than 700M of kernel memory? Do you really think > that powerd or cron can do this? Without question, cron could do it. -- Adam
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