Mailing List CGatePro@mail.stalker.com Message #96224
From: Martin.Hepworth <martinh@solidstatelogic.com>
Subject: RE: Your experiences - MBOX vs MDIR
Date: Wed, 24 Sep 2008 13:59:04 +0100
To: CommuniGate Pro Discussions <CGatePro@mail.stalker.com>
X-Mailer: CommuniGate Pro MAPI Connector 1.52.5.1/1.52.5.2
OT - hmm ext3 trusted?? Interesting viewpoint

--
Martin Hepworth
Snr Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300

> -----Original Message-----
> From: CommuniGate Pro Discussions
> [mailto:CGatePro@mail.stalker.com] On Behalf Of Christian Ellsworth
> Sent: 24 September 2008 13:56
> To: CommuniGate Pro Discussions
> Subject: Re: Your experiences - MBOX vs MDIR
>
> Rob@Logan.com wrote:
> > > please ZFS groupies stay out of this one...
> >
> > why? mdir vs mbox is filesystem dependent... a modern
> filesystem will
> > index mdir faster than an indexed mbox.
> >
> > % time ls -l > /tmp/t ; wc -l /tmp/t
> > 0.26u 0.66s 0:00.94 97.8%
> >    48565 /tmp/t
> >
> > 48k messages in one folder indexing @ 51,664.89 msg/sec
> >
> > how does your box compare?
> >
> >             Rob
> What i run?
>
> a small RHEL4 box, only 1GB ram, 3 years old CPU, with IDE
> disks no raid (old and crappy 40GB disks), using the slow but
> trusted ext3... using mbox indexing
>
> ~ time wc -l Kernel_devel.bdx
> 63103 Kernel_devel.bdx
>
> real    0m0.007s
> user    0m0.004s
> sys    0m0.002s
>
>
> and there are 63k+ messages on the mbox folder.
>
> you might say that's cheating... but the index files contains
> something way similar as a mdir format info you will get from
> a ls -l..
>
> TEXTINDEX 63101 391510743 20080616T161629Z MSG 3 86576
> S_____________ 20070611T212349Z 54 58 2490 MSG 3 86577
> S_____________ 20070611T212659Z 375 2549 13978 MSG 3 86578
> S_____________ 20070611T212708Z 103 14037 18014 MSG 3 86579
> S_____________ 20070611T212943Z 67 18073 21292 MSG 3 86580
> S_____________ 20070611T213037Z 68 21351 24740 MSG 3 86581
> S_____________ 20070611T213533Z 96 24799 28965
>
> that's the way CGP overcomes an OS filesystem limitation,
> still some filesystems are faster at large amount of small
> files, like ZFS, but that one is just one... hfs+,ext3, ntfs,
> ufs... are not that privileged...
>
>
> my single cent today ;)
>
> Christian Ellsworth
>
> >
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