Date: Wed, 15 Jul 2015 15:38:21 -0500 From: Karl Denninger <karl@denninger.net> To: freebsd-fs@freebsd.org Subject: Re: FreeBSD 10.1 Memory Exhaustion Message-ID: <55A6C4BD.5090500@denninger.net> In-Reply-To: <55A6C0A4.1030300@digiware.nl> References: <CAB2_NwCngPqFH4q-YZk00RO_aVF9JraeSsVX3xS0z5EV3YGa1Q@mail.gmail.com> <55A3A800.5060904@denninger.net> <55A4D5B7.2030603@freebsd.org> <55A4E5AB.8060909@netlabs.org> <CACfj5vJvAz9StvjTrA1TzfS%2BMhi_qSrOc_qBNHr8qXbiAj81xw@mail.gmail.com> <1436989410.1427298.324703241.421E814B@webmail.messagingengine.com> <55A6C0A4.1030300@digiware.nl>
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[-- Attachment #1 --] On 7/15/2015 15:20, Willem Jan Withagen wrote: > On 15/07/2015 21:43, Mark Felder wrote: >> >> On Tue, Jul 14, 2015, at 10:10, Sean Chittenden wrote: >>> I think the reason this is not seen more often is because people >>> frequently >>> throw limits on the arc in /boot/loader.conf: >>> >>> vfs.zfs.arc_min="18G" >>> vfs.zfs.arc_max="149G" >>> >>> ZFS ARC *should* not require those settings, but does currently for mixed >>> workloads (i.e. databases) in order to be "stable". By setting fixed >>> sizes >>> on the ARC, UMA and ARC are much more cooperative in that they have their >>> own memory regions to manage so this behavior is not seen as often. >>> >>> To be clear, however, it should not be necessary to set parameters like >>> these in /boot/loader.conf in order to obtain consistent operational >>> behavior. I'd be curious to know if someone running 10.2 BETA without >>> patches is able to trigger this behavior or not. There was work done >>> that >>> reported helped with this between 10.1 and now. To what extent it >>> helped, >>> however, I don't have any advice yet. >>> >> I was about to email "I have 12TB at home and 4GB of RAM with a very >> erratic workload and never run into any issues" and then I looked at >> /boot/loader.conf and saw vfs.zfs.arc_max="2G" >> >> Now I'm too scared to turn it off... :-) > Same here. > Just a leftover of all the advise to limit arc in the past. > Just bit the bullit: installed BETA1, killed the settings and rebooted. > We'll see what comes of it. > > --WjW If you get bit I have refactored the patch for 10.2-BETA1 to get rid of the fudges and i386 linker problem and uploaded it, so if you run into trouble try applying that and see if that fixes it. https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=187594 -- Karl Denninger karl@denninger.net <mailto:karl@denninger.net> /The Market Ticker/ /[S/MIME encrypted email preferred]/ [-- Attachment #2 --] 0 *H 01 0 + 0 *H _0[0C)0 *H 01 0 UUS10UFlorida10U Niceville10U Cuda Systems LLC1 0UCuda Systems LLC CA1"0 *H Cuda Systems LLC CA0 150421022159Z 200419022159Z0Z1 0 UUS10UFlorida10U Cuda Systems LLC1 0 UKarl Denninger (OCSP)0"0 *H 0 X@vkY Tq/vE]5#֯MX \8LJ/V?5Da+ sJc*/r{ȼnS+ w")ąZ^DtdCOZ ~7Q '@a#ijc۴oZdB&!Ӝ-< ? HN5y 5}F|e f"V لio74zn">a1qWuɖbFeGE&3(KhixG3!#e_XƬ Ϝ/,$+;4y 'Bz<qT9_?rRUpn5 Jn&Rx/p Jyel*pN8/#9u/YP EC)TY>~/˘N[vyiDKˉ ,^" ?$T8 v& K%z8C @?K{9f`+@,| Mbia 007++0)0'+0http://cudasystems.net:88880 U 0 0 `HB0 U 0, `HB OpenSSL Generated Certificate0 U -h\Ff Y0 U #0$q}ݽʒm50 U 0karl@denninger.net0 *H Owbabɺx&Uk[ (Oj!%p MQ0I!#QH}.>~2&D}<wm_>V6 v ]f>=Nn+8;q wfΰ/RLyUG#b}n!Dր _up|_ǰc/%ۥ nN8:d;-UJd/m1~VނיnN I˾$tF1&}|?q?\đXԑ&\4V<lKۮ3%Am_(q -(cAeGX)f}-˥6cv~Kg8m~v ;|9:-iAPқ6ېn-.)<[$KJtt/L4ᖣ^Cmu4vb{+BG$M0c\[MR|0FԸP&78"4p# }D Z9;V9#>Sw"[UP710001 0 UUS10UFlorida10U Niceville10U Cuda Systems LLC1 0UCuda Systems LLC CA1"0 *H Cuda Systems LLC CA)0 + !0 *H 1 *H 0 *H 1 150715203821Z0# *H 1Me<`"!V|6!@ 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 Cuda Systems LLC CA)0 *H 101 0 UUS10UFlorida10U Niceville10U Cuda Systems LLC1 0UCuda Systems LLC CA1"0 *H Cuda Systems LLC CA)0 *H %nN !S5$lU f&^WX#z#EjJNmUK|ݡ cTj*]rމ唹x6'd=ןrSU**wW*Q:,R@&X|m(㶤A/*}Ie6Ocw 0NثX#: jkx <a 6'}ݘ S Ј,g@H֠`=[Zcn}?^!]VcfoB!}b׳]xk|Ę3)S&Ht d> X%Uq lhVyA#VѲvP@6` ƺ~Yu|YػDSo(]ps\ߓr%$ʌq S c++:1tyw$ Q wBML8bvt-(ufup% /= 9f9a|n wwK6U%xB&nRmo; W;?\ohome | help
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