Date: Thu, 8 Nov 2012 17:34:35 +0200 From: Nikolay Denev <ndenev@gmail.com> To: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> Cc: Garrett Cooper <yanegomi@gmail.com>, "freebsd-hackers@freebsd.org" <freebsd-hackers@FreeBSD.org>, Lev Serebryakov <lev@FreeBSD.org>, Erik Cederstrand <erik@cederstrand.dk>, Yuri <yuri@rawbw.com> Subject: Re: pgbench performance is lagging compared to Linux and DragonflyBSD? Message-ID: <11BFE0CE-E773-4585-AB8E-2325A8DCD8B2@gmail.com> In-Reply-To: <alpine.BSF.2.00.1211081154360.9400@wojtek.tensor.gdynia.pl> References: <50980ADD.4010402@rawbw.com> <CAGH67wScvnE7gYzVVtfehYbVfM465vrLjP9bX4KXSp8Sq-25mA@mail.gmail.com> <alpine.BSF.2.00.1211061025210.18204@wojtek.tensor.gdynia.pl> <A396E61A-10A4-40A1-B7FC-97AA2C0B7340@gmail.com> <alpine.BSF.2.00.1211071547170.5942@wojtek.tensor.gdynia.pl> <FB2D46E8-2940-4583-B15A-5F3BE63C46DF@gmail.com> <47D1FF90-A96D-4620-9AA0-324865CE827B@cederstrand.dk> <1961607438.20121108133811@serebryakov.spb.ru> <alpine.BSF.2.00.1211081154360.9400@wojtek.tensor.gdynia.pl>
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On Nov 8, 2012, at 12:56 PM, Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> wrote: >> EC> That thread starts here: >> EC> http://lists.freebsd.org/pipermail/freebsd-arch/2010-April/010143.html >> Year 2010! And we still limited by MAXPHYS (128K) transfers :( > put > options MAXPHYS=2097152 > in your kernel config. > > EVERYTHING works in all production machines for over a year > > > the only exception is my laptop with OCZ petrol SSD that hangs on any transfer >1MB, i've set it to 0.5MB here. Have you measured the performance increase? I'm also interested in bigger MAXBSIZE as this is what the NFS server uses as maximum transfer size. Linux and Solaris can do up to 1MB.help
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