Date: Fri, 28 Feb 2014 21:15:08 +0200 From: Anton Sayetsky <vsjcfm@gmail.com> To: Adam Vande More <amvandemore@gmail.com> Cc: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: ZFS and Wired memory, again Message-ID: <CAFG2KCLNoR2=4nWR74kHVS732qenRVUCT4GQ%2BZKWh4uUs2bk2Q@mail.gmail.com> In-Reply-To: <CA%2BtpaK3aQ60CrrVksb69muUXGhTD5Vtn%2Bpu6G7g=4E9eCLC_OQ@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> <CA%2BtpaK3aQ60CrrVksb69muUXGhTD5Vtn%2Bpu6G7g=4E9eCLC_OQ@mail.gmail.com>
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2014-02-28 21:11 GMT+02:00 Adam Vande More <amvandemore@gmail.com>: > 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 But never does on the same system with ZFS disabled.
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