Date: Tue, 25 Mar 2014 07:09:07 -0500 From: Karl Denninger <karl@denninger.net> To: John <john@theusgroup.com>, mikej <mikej@mikej.com> Cc: freebsd-fs@freebsd.org Subject: Re: kern/187594: [zfs] [patch] ZFS ARC behavior problem and fix [SB QUAR: Fri Mar 21 16:01:12 2014] Message-ID: <533171E3.7060000@denninger.net> In-Reply-To: <20140325081023.99DA9131@server.theusgroup.com> References: <201403201710.s2KHA0e9043051@freefall.freebsd.org> <31e2f5092048c128add6f4cd3d136f4d@mail.mikej.com> <532CD3BC.5020305@denninger.net> <b389a3b124e16432b446d73e794e9c86@mail.mikej.com> <53304D8D.7080107@denninger.net> <c42f6df8791cac4479d9e49a20c150be@mail.mikej.com> <20140325081023.99DA9131@server.theusgroup.com>
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[-- Attachment #1 --] On 3/25/2014 3:10 AM, John wrote: >> Karl, >> >> I don't know why the PR system doesn't allow multiple attachments for >> patches >> to be sent so they can easily be downloaded. I continue to be >> unsuccessful >> at getting patches out of email that don't have line wrap are tab >> issues. So, >> again if you could send a link or post the latest patch I would be glad >> to let >> it churn. >> >> If I need an education about the PR system, please someone help me. > I've had to hand edit every patch due to the extra stuff added in the email > from mime encoding and the PR system stripping all leading white space from > the patches that show up there. > > That said, I've been applying the patches to 9.2. The previous patch was a > big improvement under my workload. It's too early to tell about the latest > patch, but its applied to 9.2 after I upgraded to the new zfs features, r263423. > > The machine has 24 GB of ram and prior to the patches it had vfs.zfs.arc_max > tuned to 14 GB to keep from swapping. With the patch I've raise arc_max to > 16 GB (I'll raise it higher after more testing), and arc management seems to > be working well. > > John Theus > TheusGroup.com > You can remove the arc_max tuning entirely, since the latest patch allows you to set the low-RAM warning level either in pages, percentage of RAM or both at runtime (making pre-setting the arc_max level unnecessary.) -- -- Karl karl@denninger.net [-- Attachment #2 --] 0 *H 01 0 + 0 *H O0K030 *H 01 0 UUS10UFlorida10U Niceville10U Cuda Systems LLC1 0UCuda Systems LLC CA1/0- *H customer-service@cudasystems.net0 130824190344Z 180823190344Z0[1 0 UUS10UFlorida10UKarl Denninger1!0 *H karl@denninger.net0"0 *H 0 bi՞] MNԿawx?`)'ҴcWgR@BlWh+ u}ApdCF JVй~FOL }EW^bچYp3K& ׂ(R lxڝ.xz?6 &nsJ +1v9 v/( kqĪp[vjcK%fϻe?iq]z lyzFO'ppdX//Lw(3 JI A*S#՟H[f|CGqJKoo y.oEuOw$ /섀$삻J9b|A P~8]D1YI<"""Y^T2iQ2 b yH)] Ƶ0y$ _N 6XqMC 9 XgώjGTP"#nˋ"Bk1 00 U 0 0 `HB0 U 0, `HB OpenSSL Generated Certificate0 U |8 ˴d[20 U #0]Af4 U3x&^"408 `HB+)https://cudasystems.net:11443/revoked.crl0 *H gBwH] j\x`( &gW32"Uf^. ^Iϱ k!DQA g{(w /)\N'[ oRW @C HO>)XrTNɘ!u`xt5(=f\-l3<@C6mnhv##1ŃbH͍_Nq aʷ?rk$^9TIa!kh,D -ct1 0001 0 UUS10UFlorida10U Niceville10U Cuda Systems LLC1 0UCuda Systems LLC CA1/0- *H customer-service@cudasystems.net0 + ;0 *H 1 *H 0 *H 1 140325120907Z0# *H 1fN;6'>[1mNU`0l *H 1_0]0 `He*0 `He0 *H 0*H 0 *H @0+0 *H (0 +71001 0 UUS10UFlorida10U Niceville10U Cuda Systems LLC1 0UCuda Systems LLC CA1/0- *H customer-service@cudasystems.net0 *H 101 0 UUS10UFlorida10U Niceville10U Cuda Systems LLC1 0UCuda Systems LLC CA1/0- *H customer-service@cudasystems.net0 *H nf~Z_ 2L F/bCiK$Mv,XoVm%: њ%*0|K:n+:Jb<% ̌6) .21 ('azXz %ʻe<}OޟV圄+/HK\c{iϧ# ve DQ" 'k 0EIAk;â ǗΎo7(39YI>VB%-ᦚNAe ,-Ј¤?|Z az3< 1Zn;-rJN,I J't7rI88r|,A0AI(4B}f\:xkuA]a `/|"San4af R"Jcrc9SZ @{s{" IQZ5 baV ң%SrN*9UAj\1
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