From: Al Boldi <a1426z-u1xxEuL7cY4AvxtiuMwx3w@public.gmane.org>
To: Nikolai Joukov <kolya-EX0cT3Az47bauI2f2gSDlQ@public.gmane.org>
Cc: linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-raid-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
fistgen-2jbElX+0AsP5NRxSJurNR4dd74u8MsAO@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
unionfs-2jbElX+0AsP5NRxSJurNR4dd74u8MsAO@public.gmane.org
Subject: Re: [ANNOUNCE] RAIF: Redundant Array of Independent Filesystems
Date: Wed, 13 Dec 2006 22:57:24 +0300 [thread overview]
Message-ID: <200612132257.24399.a1426z@gawab.com> (raw)
In-Reply-To: <Pine.GSO.4.53.0612122217360.22195@compserv1>
Nikolai Joukov wrote:
> We have designed a new stackable file system that we called RAIF:
> Redundant Array of Independent Filesystems.
Great!
> We have performed some benchmarking on a 3GHz PC with 2GB of RAM and U320
> SCSI disks. Compared to the Linux RAID driver, RAIF has overheads of
> about 20-25% under the Postmark v1.5 benchmark in case of striping and
> replication. In case of RAID4 and RAID5-like configurations, RAIF
> performed about two times *better* than software RAID and even better than
> an Adaptec 2120S RAID5 controller.
I am not surprised. RAID 4/5/6 performance is highly sensitive to the
underlying hw, and thus needs a fair amount of fine tuning.
> This is because RAIF is located above
> file system caches and can cache parity as normal data when needed. We
> have more performance details in a technical report, if anyone is
> interested.
Definitely interested. Can you give a link?
Thanks!
--
Al
next prev parent reply other threads:[~2006-12-13 19:57 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-13 17:47 [ANNOUNCE] RAIF: Redundant Array of Independent Filesystems Nikolai Joukov
2006-12-13 19:02 ` Phillip Susi
2006-12-13 19:17 ` Nikolai Joukov
2006-12-13 19:32 ` Nikolai Joukov
2006-12-13 19:33 ` Jan Engelhardt
2006-12-13 19:57 ` Nikolai Joukov
2006-12-13 19:57 ` Al Boldi [this message]
2006-12-14 21:01 ` Nikolai Joukov
2006-12-14 21:30 ` Charles Manning
2006-12-15 16:48 ` Nikolai Joukov
2006-12-14 22:48 ` berk walker
2006-12-15 5:02 ` Al Boldi
2006-12-15 17:41 ` Nikolai Joukov
[not found] ` <200612161635.49502.a1426z@gawab.com>
2006-12-16 17:39 ` Nikolai Joukov
2006-12-19 17:50 ` stacked filesystem cache waste Bryan Henderson
[not found] ` <200612172059.07941.a1426z@gawab.com>
2006-12-23 3:21 ` [ANNOUNCE] RAIF: Redundant Array of Independent Filesystems Nikolai Joukov
2006-12-14 11:12 ` Al Boldi
2006-12-14 23:44 ` Nikolai Joukov
2006-12-15 5:03 ` Al Boldi
2006-12-15 18:47 ` Nikolai Joukov
2006-12-15 12:47 ` Ed Tomlinson
2006-12-15 20:11 ` Nikolai Joukov
2006-12-15 23:58 ` Ed Tomlinson
2006-12-16 0:20 ` Bryan Henderson
2006-12-16 1:20 ` Nikolai Joukov
2006-12-16 14:46 ` Ed Tomlinson
2006-12-16 17:57 ` Nikolai Joukov
2006-12-16 0:02 ` David Lang
2006-12-16 0:58 ` Nikolai Joukov
-- strict thread matches above, loose matches on Subject: below --
2006-12-15 1:13 Nikolai Joukov
[not found] <OF582D7197.D6F604B1-ON88257248.0069CC60-88257248.006AE165@us.ibm.com>
2006-12-25 15:13 ` Nikolai Joukov
2007-01-06 5:17 Chaitanya Patti
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