Date: Fri, 27 Jul 2012 10:04:27 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Aleksandr Rybalko <ray@freebsd.org> Cc: freebsd-embedded@freebsd.org, jasone@freebsd.org Subject: Re: jemalloc vs old allocator Message-ID: <CAJ-Vmo=NApROEYSBL_A1HFci3WTPgDAmjajnXRJeOBpSWpNtsA@mail.gmail.com> In-Reply-To: <20120726143551.b2b0ce30.ray@freebsd.org> References: <20120726143551.b2b0ce30.ray@freebsd.org>
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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>
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