Date: Fri, 28 Feb 2014 12:30:11 -0800 From: Darren Pilgrim <list_freebsd@bluerosetech.com> To: Anton Sayetsky <vsjcfm@gmail.com> Cc: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: ZFS and Wired memory, again Message-ID: <5310F1D3.9020908@bluerosetech.com> In-Reply-To: <CAFG2KCKHCzoRg581obAig0cDKDcoRoi0vo0dO1mbR-x-J_TTtg@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> <1393616123.28153.89089441.54713282@webmail.messagingengine.com> <CA%2BtpaK246eKwjvPXgzcxt_e5%2B=udietjPQKSdDV%2BiLRG-T2RDQ@mail.gmail.com> <CAFG2KCKHCzoRg581obAig0cDKDcoRoi0vo0dO1mbR-x-J_TTtg@mail.gmail.com>
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On 2/28/2014 11:48 AM, Anton Sayetsky wrote: > And again - read _carefully_. System with 3G RAM is only test system > with single disk. Sorry for Adam and Mark not reading and completely missing the point. You can use the -m and -z flags to vmstat to get a listing of the various things using memory. A comparison between the "just booted" listing and one after wired memory has grown to hundreds of MB more than ARC may help indicate what's using memory. FWIW, on a production mailbox server with 32 GiB of memory and 8 TB of mirrored disk: Mem: 30M Active, 265M Inact, 22G Wired, 2032K Cache, 9366M Free ARC: 20G Total, 5081M MFU, 15G MRU, 1554K Anon, 260M Header, 577M Other IIRC, wired memory is just kernel pages and there is quite a bit of other stuff using kernel memory in the modern FreeBSD. A few GB of kernel memory plus ARC is normal on a modern system with lots of memory.
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