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=3D2097152 > in your kernel config. >=20 > EVERYTHING works in all production machines for over a year >=20 >=20 > 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.
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