Date: Mon, 28 Oct 2013 11:06:15 +0200 From: Vitalij Satanivskij <satan@ukr.net> To: Steven Hartland <killing@multiplay.co.uk> Cc: Vitalij Satanivskij <satan@ukr.net>, freebsd-current@freebsd.org, Dmitriy Makarov <supportme@ukr.net> Subject: Re: ZFS L2ARC - incorrect size and abnormal system load on r255173 Message-ID: <20131028090615.GA90738@hell.ukr.net> In-Reply-To: <96FA3CD4CDCE49268EF41E28FF4E9381@multiplay.co.uk> References: <20131007185032.GA82932@hell.ukr.net> <20131007211201.GA89306@hell.ukr.net> <20131010092223.GA28347@hell.ukr.net> <5256D9D4.2030308@allanjude.com> <20131010170334.GA71635@hell.ukr.net> <3E3F85F87B0D40C6A776A42786EEF08D@multiplay.co.uk> <20131022141055.GA34810@hell.ukr.net> <5C339A76AE4C402BA5F9F1470500246A@multiplay.co.uk> <20131025073219.GA4086@hell.ukr.net> <96FA3CD4CDCE49268EF41E28FF4E9381@multiplay.co.uk>
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So that's patch not disabling compresion on l2arc? Steven Hartland wrote: SH> I would have expected zero for all l2_compress values. SH> SH> Regards SH> Steve SH> SH> ----- Original Message ----- SH> From: "Vitalij Satanivskij" <satan@ukr.net> SH> To: "Steven Hartland" <killing@multiplay.co.uk> SH> Cc: "Vitalij Satanivskij" <satan@ukr.net>; "Dmitriy Makarov" <supportme@ukr.net>; <freebsd-current@freebsd.org> SH> Sent: Friday, October 25, 2013 8:32 AM SH> Subject: Re: ZFS L2ARC - incorrect size and abnormal system load on r255173 SH> SH> SH> > Just after system reboot with this patch SH> > SH> > found SH> > kstat.zfs.misc.arcstats.l2_compress_successes: 6083 SH> > kstat.zfs.misc.arcstats.l2_compress_zeros: 1 SH> > kstat.zfs.misc.arcstats.l2_compress_failures: 296 SH> > SH> > compression on test pool (where I'm test this patch) is lz4 SH> > SH> > so is it ok ? SH> > SH> > SH> > SH> > Steven Hartland wrote: SH> > SH> If you are still seeing high load try commenting out the following SH> > SH> which should disable l2arc compression. SH> > SH> sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c SH> > SH> if (l2arc_compress) SH> > SH> hdr->b_flags |= ARC_L2COMPRESS; SH> > SH> SH> > SH> SH> ================================================ SH> This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. SH> SH> In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 SH> or return the E.mail to postmaster@multiplay.co.uk. SH> SH> _______________________________________________ SH> freebsd-current@freebsd.org mailing list SH> http://lists.freebsd.org/mailman/listinfo/freebsd-current SH> To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"
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