Date: Wed, 4 Jun 2008 23:18:40 +0000 (UTC) From: D Hill <d.hill@mwci.net> To: freebsd-questions@freebsd.org Subject: Re: vm.pmap.shpgperproc syslog messages Message-ID: <alpine.BSF.1.10.0806042317470.4207@duane.dbq.yournetplus.com> In-Reply-To: <alpine.BSF.1.10.0806042300040.4207@duane.dbq.yournetplus.com> References: <alpine.BSF.1.10.0806042300040.4207@duane.dbq.yournetplus.com>
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On Wed, 4 Jun 2008 at 23:15 -0000, d.hill@yournetplus.com confabulated: > I just noticed today I'm starting to get messages in ../messages stating: Sorry. It was actually in the dmesg report I saw the messages. > Approaching the limit on PV entries, consider increasing either the > vm.pmap.shpgperproc or the vm.pmap.pv_entry_max sysctl. > > I did some searching and don't really know what is going on. I did a search > using sysctl for all pmap knobs and this is what they are currently: > > vm.pmap.pmap_collect_active: 0 > vm.pmap.pmap_collect_inactive: 0 > vm.pmap.pv_entry_spare: 51310 > vm.pmap.pv_entry_allocs: 67575721858 > vm.pmap.pv_entry_frees: 67574088800 > vm.pmap.pc_chunk_tryfail: 0 > vm.pmap.pc_chunk_frees: 416252902 > vm.pmap.pc_chunk_allocs: 416262928 > vm.pmap.pc_chunk_count: 10026 > vm.pmap.pv_entry_count: 1633059 > vm.pmap.shpgperproc: 500 > vm.pmap.pv_entry_max: 6125408 > > I did increased vm.pmap.shpgperproc to 500 from 200 and immediately saw > vm.pmap.pv_entry_max increase as well. > > This server is a Dell PowerEdge 6850 with four 3.0Gz dual core Zeon > processors and 12Gb ram. The server's only purpose is a spam filter. It is > running SpamAssassin, ClamAV, Postfix and MySQL. The server is pretty memory > intensive. Active memory usually doesn't drop below 8Gb. SpamAssassin usually > has roughly 24 children running all the time consuming ~120Mb per child. > MySQL is currently taking ~5.5Gb. > > Can someone shed light on what is going on or what needs to be tweaked?
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