Date: Fri, 17 Feb 2006 15:07:15 -0500 From: Mike Jakubik <mikej@rogers.com> To: Jason Evans <jasone@freebsd.org> Cc: freebsd-current@freebsd.org, Kris Kennaway <kris@obsecurity.org> Subject: Re: Virtual memory consumption (both user and kernel) in modern CURRENT Message-ID: <43F62CF3.2000005@rogers.com> In-Reply-To: <1091E3C1-1E93-4030-9097-D28C780F9D44@freebsd.org> References: <20060215024339.N22450@atlantis.atlantis.dp.ua> <43F29BF5.4060300@freebsd.org> <20060216123548.GA35910@uk.tiscali.com> <20060216135138.GA16669@flame.pc> <43F525A6.3080701@rogers.com> <20060217013039.GA31540@xor.obsecurity.org> <43F6174A.7060801@rogers.com> <1091E3C1-1E93-4030-9097-D28C780F9D44@freebsd.org>
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Jason Evans wrote: > On Feb 17, 2006, at 10:34 AM, Mike Jakubik wrote: >> >> Great, too bad only 2% of my applications are threaded. I just don't >> see this change very positively, using 40MB of swap, where before was >> none does not seem to me like a speed improvement. I'm all for better >> performance of threaded apps, but the trade off seems too high. > > Are redzones enabled? (They are turned on by default in CURRENT.) > You can check by reading the output from something like: > > MALLOC_OPTIONS=P ls > > Keep in mind that they use up substantial extra memory -- 32 bytes per > allocation. Unless you have disabled redzones, you should expect much > higher memory usage with jemalloc than with phkmalloc. ___ Begin malloc statistics ___ Number of CPUs: 1 Number of arenas: 1 Cache slots: 256 Chunk size: 16777216 (2^24) Quantum size: 16 (2^4) Pointer size: 4 Number of bins: 128 Maximum bin size: 2096 Assertions enabled Redzone size: 16 Allocated: 22272, space used: 33554432 Does this mean they are enabled? and if so, how can i disable them? Which malloc is in -current now?
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