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Subject: Re: pgbench performance is lagging compared to Linux and DragonflyBSD?
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From: Nikolay Denev <ndenev@gmail.com>
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To: Wojciech Puchar <wojtek@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.