Date: Thu, 22 Aug 2013 09:18:56 +0200 From: Ralf Wenk <iz-rpi03@hs-karlsruhe.de> To: Zbyszek Bodek <zbb@semihalf.com> Cc: freebsd-arm@FreeBSD.org, Alan Cox <alc@cs.rice.edu> Subject: Re: Introduction to the superpages support for ARMv6/v7 Message-ID: <E1VCPAf-008tzu-F9@smtp.hs-karlsruhe.de> In-Reply-To: <5214EAE6.6040300@semihalf.com> References: <5214EAE6.6040300@semihalf.com>
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Hi, on my 512 MB raspberry pi I had to reduce params.HPLMaxProcMem to 400 MB to avoid killing of the GUPS benchmark. After this small change everything looks fine. FreeBSD raspberry-pi 10.0-CURRENT FreeBSD 10.0-CURRENT #0 r254596M $ ./gups Main table size = 2^25 = 33554432 words Number of updates = 134217728 CPU time used = 40.437500 seconds Real time used = 41.355471 seconds 0.003245465 Billion(10^9) Updates per second [GUP/s] Found 0 errors in 33554432 locations (passed). $ sysctl vm.pmap vm.pmap.sp_enabled: 1 vm.pmap.pv_entry_count: 5396 vm.pmap.pv_entry_max: 946260 vm.pmap.shpgperproc: 200 vm.pmap.section.demotions: 1109 vm.pmap.section.mappings: 0 vm.pmap.section.p_failures: 67 vm.pmap.section.promotions: 1342 $ 2nd run $ ./gups Main table size = 2^25 = 33554432 words Number of updates = 134217728 CPU time used = 40.421875 seconds Real time used = 41.314968 seconds 0.003248647 Billion(10^9) Updates per second [GUP/s] Found 0 errors in 33554432 locations (passed). $ sysctl vm.pmap vm.pmap.sp_enabled: 1 vm.pmap.pv_entry_count: 4274 vm.pmap.pv_entry_max: 946260 vm.pmap.shpgperproc: 200 vm.pmap.section.demotions: 1137 vm.pmap.section.mappings: 0 vm.pmap.section.p_failures: 119 vm.pmap.section.promotions: 1599 $ Tank you for your nice work Ralf
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