Date: Sun, 12 Sep 2010 17:51:52 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Andriy Gapon" <avg@freebsd.org>, "Kostik Belousov" <kostikbel@gmail.com> Cc: freebsd-fs@freebsd.org, Pawel Jakub Dawidek <pjd@freebsd.org> Subject: Re: zfs very poor performance compared to ufs due to lack of cache? Message-ID: <A6D7E134B24F42E395C30A375A6B50AF@multiplay.co.uk> References: <5DB6E7C798E44D33A05673F4B773405E@multiplay.co.uk><AANLkTikNhsj5myhQCoPaNytUbpHtox1vg9AZm1N-OcMO@mail.gmail.com><4C85E91E.1010602@icyb.net.ua> <4C873914.40404@freebsd.org><20100908084855.GF2465@deviant.kiev.zoral.com.ua> <4C874F00.3050605@freebsd.org>
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----- Original Message -----
From: "Andriy Gapon" <avg@freebsd.org>
>>> --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c
>>> +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c
>>> @@ -500,6 +500,7 @@ again:
>>> sched_unpin();
>>> }
>>> VM_OBJECT_LOCK(obj);
>>> + vm_page_set_validclean(m, off, bytes);
>> Only if error == 0, perhaps ?
Ok tried this and still no joy, the value of the cache always falls to that of the min
value and all memory used by sendfile still seems to get lost into inactive memory :(
Regards
Steve
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