Date: Mon, 30 Jul 2012 11:34:18 +0300 From: Aleksandr Rybalko <ray@freebsd.org> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-embedded@freebsd.org, jasone@freebsd.org Subject: Re: jemalloc vs old allocator Message-ID: <20120730113418.97694fdf.ray@freebsd.org> In-Reply-To: <CAJ-Vmo=NApROEYSBL_A1HFci3WTPgDAmjajnXRJeOBpSWpNtsA@mail.gmail.com> References: <20120726143551.b2b0ce30.ray@freebsd.org> <CAJ-Vmo=NApROEYSBL_A1HFci3WTPgDAmjajnXRJeOBpSWpNtsA@mail.gmail.com>
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On Fri, 27 Jul 2012 10:04:27 -0700 Adrian Chadd <adrian@freebsd.org> wrote: >> Just as a note, ray@ compared jemalloc-HEAD with an older jemalloc. >> >> I've just asked him to compare it to phkmalloc from -8. He'll >> hopefully post those results soon. >> >> Still, great work. :) >> >> >> >> Adrian >> >> >> On 26 July 2012 04:35, Aleksandr Rybalko <ray@freebsd.org> wrote: >> > Hi, >> > >> > I believe what Jason Evans done many test before commit jemalloc, >> > but made by myself simple test for embedded environment. And get >> > following results: >> > >> > 1. old malloc: >> > Sum of RSS of userland programs: 28544K >> > >> > sysctl vm.vmtotal: >> > System wide totals computed every five seconds: (values in >> > kilobytes) =============================================== >> > Processes: (RUNQ: 1 Disk Wait: 1 Page Wait: 0 Sleep: >> > 19) Virtual Memory: (Total: 2372224K Active: 250316K) >> > Real Memory: (Total: 18096K Active: 11392K) >> > Shared Virtual Memory: (Total: 15824K Active: 5288K) >> > Shared Real Memory: (Total: 2644K Active: 2408K) >> > Free Memory: 2192K >> > >> > >> > 2. jemalloc with MALLOC_PRODUCTION: >> > Sum of RSS of userland programs: 21196K >> > >> > sysctl vm.vmtotal: >> > System wide totals computed every five seconds: (values in >> > kilobytes) =============================================== >> > Processes: (RUNQ: 1 Disk Wait: 1 Page Wait: 0 Sleep: >> > 19) Virtual Memory: (Total: 2380988K Active: 257820K) >> > Real Memory: (Total: 19048K Active: 12144K) >> > Shared Virtual Memory: (Total: 16180K Active: 5392K) >> > Shared Real Memory: (Total: 2664K Active: 2392K) >> > Free Memory: 2440K >> > >> > I check it on DIR-632(Atheros AR7242 with 32M RAM) between 10-20 >> > mins of uptime. Device behave identical in both cases. >> > >> > So if "something" new take more memory than before, that >> > "something" is not a jemalloc :) >> > >> > P.S. Many thanks to Jason for such great job! >> > >> > WBW >> > -- >> > Aleksandr Rybalko <ray@freebsd.org> Hi all, so, unlike both jemallocs, Poul's version of malloc born with more free memory: Sum of RSS of userland programs: 25444K sysctl vm.vmtotal: System wide totals computed every five seconds: (values in kilobytes) =============================================== Processes: (RUNQ: 1 Disk Wait: 1 Page Wait: 0 Sleep: 19) Virtual Memory: (Total: 2163524K Active: 59196K) Real Memory: (Total: 16656K Active: 10144K) Shared Virtual Memory: (Total: 5620K Active: 5200K) Shared Real Memory: (Total: 2552K Active: 2356K) Free Memory: 3140K But after half a day with some minor activity (logs on tmpfs, racoon connect attempts, etc.) free memory goes down to: Free Memory: 2316K and continue get more and more memory, after full day, it is around 1.5M free. -- Aleksandr Rybalko <ray@freebsd.org>
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