Date: Thu, 05 Apr 2007 17:38:45 +0100 From: Tom Judge <tom@tomjudge.com> To: freebsd-stable@freebsd.org Subject: Re: ggate + gmirror write performance woes Message-ID: <46152615.1040602@tomjudge.com> In-Reply-To: <20070405160313.GE1230@dkirhlarov.mow.oilspace.com> References: <1175785136.8280.10.camel@lanshark.dmv.com> <20070405160313.GE1230@dkirhlarov.mow.oilspace.com>
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Dmitriy Kirhlarov wrote: > On Thu, Apr 05, 2007 at 10:58:56AM -0400, Sven Willenberger wrote: >> I am trying to set up a HA type system involving two identical boxes and >> have gone through the following to set up the systems: >> >> Slave server: >> ggated -R 196608 -S 196608 >> (exporting /dev/amrd1 ) >> net.inet.tcp.sendspace: 65536 >> net.inet.tcp.recvspace: 131072 > > Try > net.local.stream.recvspace=65535 > net.local.stream.sendspace=65535 > > Also, try increase this sysctls with > net.inet.tcp.rfc1323=1 > > I use it on FreeBSD 5.x with: > net.inet.tcp.sendspace=131072 > net.inet.tcp.recvspace=131072 > net.local.stream.recvspace=65535 > net.local.stream.sendspace=65535 > > ggated -R 1048576 -S 1048576 > ggatec -R 1048576 -S 1048576 > > WBR. > Dmitriy > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" I have seen sustained writes of 30Mb/s using the following configuration: cat /boot/loader.conf kern.ipc.nmbclusters="32768" cat /etc/sysctl.conf net.inet.tcp.sendspace=1048576 net.inet.tcp.recvspace=1048576 Server: /sbin/ggated -S 1310720 -R 1310720 -a 172.31.0.18 /etc/gg.exports Client: /sbin/ggatec create -q 2048 -t 5 -S 1310720 -R 1310720 172.31.0.18 /dev/amrd0s2 The raid array is a RAID 1 volume on a dell PERC4 (Dell PE1850) with adaptive read ahead and write back caching. Tom
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