Mailinglist Archive: opensuse-features (199 mails)

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[openFATE 310942] include BCache (cache on SSD) in kernel
  • From: fate_noreply@xxxxxxx
  • Date: Thu, 9 Dec 2010 23:16:40 +0100 (CET)
  • Message-id: <feature-310942-5@xxxxxxxxxxxxxx>
Feature changed by: Vadims Korsaks (truckk)
Feature #310942, revision 5
Title: include BCache (cache on SSD) in kernel

openSUSE-11.4: New
Priority
Requester: Desirable

Requested by: Vadims Korsaks (truckk)
Partner organization: openSUSE.org

Description:
Bcache is a patch to use SSDs to transparently cache arbitrary block
devices. Its main claim to fame is that it's designed for the
performance characteristics of SSDs - it avoids random writes and
extraneous IO at all costs, instead allocating buckets sized to your
erase blocks and filling them up seqentially. It uses a hybrid
btree/log, instead of a hash table as some other caches.

Business case (Partner benefit):
openSUSE.org: SSD devices can help improve rotation disks performance,
this will give better overal performance and allow to use big rotation
disks capacity.

Discussion:
#1: Rajko Matovic (rajko_m) (2010-12-09 02:33:58)
What I'm missing in this feature request is:
* where to find "Bcache",
* for what is that patch (kernel),
* some discussion comparing performance with and without bcache


+ #2: Vadims Korsaks (truckk) (2010-12-09 23:16:33) (reply to #1)
+ LWN article about latest v9 http://lwn.net/Articles/416484/ Wiki:
+ http://bcache.evilpiepirate.org/ there are some performance data
+ P.S. comment adding is ... is too wired



--
openSUSE Feature:
https://features.opensuse.org/310942

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