From owner-freebsd-current@FreeBSD.ORG Fri Feb 21 13:02:05 2014 Return-Path: Delivered-To: freebsd-current@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 461779D1; Fri, 21 Feb 2014 13:02:05 +0000 (UTC) Received: from hell.ukr.net (hell.ukr.net [212.42.67.68]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id F1F6A1A29; Fri, 21 Feb 2014 13:02:04 +0000 (UTC) Received: from satan by hell.ukr.net with local ID 1WGpjn-0005rc-MD ; Fri, 21 Feb 2014 15:01:55 +0200 Date: Fri, 21 Feb 2014 15:01:55 +0200 From: Vitalij Satanivskij To: Andriy Gapon Subject: Re: ARC "pressured out", how to control/stabilize ? (reformatted to text/plain) Message-ID: <20140221130155.GB22233@hell.ukr.net> References: <20140204171040.GA82996@hell.ukr.net> <52F12210.10604@FreeBSD.org> <20140205090449.GA9341@hell.ukr.net> <20140205122241.GA38114@hell.ukr.net> <52F4A35E.1080902@FreeBSD.org> <52FA2CA2.5000508@FreeBSD.org> <20140218133841.GA58764@hell.ukr.net> <530363CA.4060507@FreeBSD.org> <20140218134710.GA58844@hell.ukr.net> <53074D18.5030908@FreeBSD.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <53074D18.5030908@FreeBSD.org> User-Agent: Mutt/1.5.22 (2013-10-16) Cc: Vitalij Satanivskij , Current FreeBSD , Vladimir Sharun X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list Reply-To: satan@ukr.net List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 21 Feb 2014 13:02:05 -0000 Dear Andriy, system uptime is 8 days, 20:26 Output: kstat.zfs.misc.arcstats.evict_l2_cached: 9771077767680 kstat.zfs.misc.arcstats.evict_l2_eligible: 3844577713152 kstat.zfs.misc.arcstats.evict_l2_ineligible: 8855320643072 kstat.zfs.misc.arcstats.l2_hits: 79824726 kstat.zfs.misc.arcstats.l2_misses: 217864980 kstat.zfs.misc.arcstats.l2_feeds: 760023 kstat.zfs.misc.arcstats.l2_rw_clash: 61903 kstat.zfs.misc.arcstats.l2_read_bytes: 3058416338944 kstat.zfs.misc.arcstats.l2_write_bytes: 2487863166464 kstat.zfs.misc.arcstats.l2_writes_sent: 732146 kstat.zfs.misc.arcstats.l2_writes_done: 732146 kstat.zfs.misc.arcstats.l2_writes_error: 0 kstat.zfs.misc.arcstats.l2_writes_hdr_miss: 51888 kstat.zfs.misc.arcstats.l2_evict_lock_retry: 4416 kstat.zfs.misc.arcstats.l2_evict_reading: 1 kstat.zfs.misc.arcstats.l2_free_on_write: 282867 kstat.zfs.misc.arcstats.l2_cdata_free_on_write: 326028 kstat.zfs.misc.arcstats.l2_abort_lowmem: 1348 kstat.zfs.misc.arcstats.l2_cksum_bad: 0 kstat.zfs.misc.arcstats.l2_io_error: 0 kstat.zfs.misc.arcstats.l2_size: 257940027392 kstat.zfs.misc.arcstats.l2_asize: 108789048832 kstat.zfs.misc.arcstats.l2_hdr_size: 881715600 kstat.zfs.misc.arcstats.l2_compress_successes: 60790954 kstat.zfs.misc.arcstats.l2_compress_zeros: 0 kstat.zfs.misc.arcstats.l2_compress_failures: 1738173 kstat.zfs.misc.arcstats.l2_write_trylock_fail: 1168505250 kstat.zfs.misc.arcstats.l2_write_passed_headroom: 29511803 kstat.zfs.misc.arcstats.l2_write_spa_mismatch: 1307899433 kstat.zfs.misc.arcstats.l2_write_in_l2: 51108634609 kstat.zfs.misc.arcstats.l2_write_io_in_progress: 637 kstat.zfs.misc.arcstats.l2_write_not_cacheable: 100398037509 kstat.zfs.misc.arcstats.l2_write_full: 97839 kstat.zfs.misc.arcstats.l2_write_buffer_iter: 760023 kstat.zfs.misc.arcstats.l2_write_pios: 732146 kstat.zfs.misc.arcstats.l2_write_buffer_bytes_scanned: 4642717602824192 kstat.zfs.misc.arcstats.l2_write_buffer_list_iter: 48013995 kstat.zfs.misc.arcstats.l2_write_buffer_list_null_iter: 80483 Andriy Gapon wrote: AG> on 18/02/2014 15:47 Vitalij Satanivskij said the following: AG> > No checksume errors or any other errors found for now. AG> AG> Thank you again! AG> Could you please send me an output of AG> sysctl kstat | fgrep 'l2' AG> from a system that has been patched and with a sufficiently long uptime? AG> AG> -- AG> Andriy Gapon