Date: Fri, 25 Oct 2013 10:32:19 +0300 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: <20131025073219.GA4086@hell.ukr.net> In-Reply-To: <5C339A76AE4C402BA5F9F1470500246A@multiplay.co.uk> References: <1381166916.122992963.5h9ygiri@frv45.ukr.net> <1381170764.32684.31088349.343931EE@webmail.messagingengine.com> <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>
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Just after system reboot with this patch found kstat.zfs.misc.arcstats.l2_compress_successes: 6083 kstat.zfs.misc.arcstats.l2_compress_zeros: 1 kstat.zfs.misc.arcstats.l2_compress_failures: 296 compression on test pool (where I'm test this patch) is lz4 so is it ok ? Steven Hartland wrote: SH> If you are still seeing high load try commenting out the following SH> which should disable l2arc compression. SH> sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c SH> if (l2arc_compress) SH> hdr->b_flags |= ARC_L2COMPRESS; SH>
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