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From: "Swâmi Petaramesh" <swami@petaramesh.org>
To: Goffredo Baroncelli <kreijack@gmail.com>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: BTRFS, getting darn slower everyday
Date: Mon, 08 Oct 2012 17:50:19 +0200	[thread overview]
Message-ID: <5072F63B.5060608@petaramesh.org> (raw)
In-Reply-To: <CAJHuE_CjXaSmWRagSLxOCQpnEkpc1_S_sxSm0pVbXLiGocVA9w@mail.gmail.com>

Hi again Goffredo,

Le 08/10/2012 13:38, Goffredo Baroncelli a écrit :
> I fear that both the combination of autodefrag and the high number of
> snapshot could be the root-cause of the the bad performance.
I've removed, on one of my machines, all snapshots but three per subvol
(keeping the oldests and newest), going from about 30 per subvol to 3,
for the complete filesystem from 120+ to about a dozen.

Then I let btrfs-cleaner do its job

After that the machine boots to GUI in a bit less than 2 minutes, where
it was more than 4 minutes previously.

The machine now seems much more reactive and swift.

So it seems that the number or active snapshots (or is it the number of
subvols whatsoever ??) dramatically impacts performance...

Thanks for the suggestion.

-- 
Swâmi Petaramesh <swami@petaramesh.org> http://petaramesh.org PGP 9076E32E
Ne cherchez pas : Je ne suis pas sur Facebook.


  parent reply	other threads:[~2012-10-08 15:50 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-07  9:26 BTRFS, getting darn slower everyday Swâmi Petaramesh
2012-10-07 10:59 ` Martin Steigerwald
2012-10-07 14:05   ` Swâmi Petaramesh
2012-10-07 14:48     ` Martin Steigerwald
2012-10-08  6:16       ` Swâmi Petaramesh
2012-12-09  5:17       ` Jan Engelhardt
2012-12-09 10:13         ` Martin Steigerwald
2012-12-09 10:41         ` Roman Mamedov
2012-12-09 11:20           ` Swâmi Petaramesh
2012-12-09 11:38             ` Hugo Mills
2012-12-09 22:51               ` Bob Marley
2012-12-09 14:38           ` Jan Engelhardt
2012-10-07 11:02 ` Martin Steigerwald
2012-10-07 12:33 ` Alex
2012-10-07 13:19   ` Swâmi Petaramesh
2012-10-07 14:44     ` Martin Steigerwald
2012-10-07 22:47       ` Goffredo Baroncelli
2012-10-08  6:08         ` Swâmi Petaramesh
2012-10-08 11:38           ` Goffredo Baroncelli
2012-10-08 13:36             ` Swâmi Petaramesh
2012-10-08 15:50             ` Swâmi Petaramesh [this message]
2012-10-08 16:46               ` Goffredo Baroncelli
2012-10-08  6:22       ` Swâmi Petaramesh
2012-11-14 16:17     ` Peter Maloney
2012-10-07 13:00 ` Martin Steigerwald
2012-10-07 13:14   ` Swâmi Petaramesh
2012-10-07 14:41     ` Martin Steigerwald
2012-10-08 16:09 ` Josef Bacik
2012-10-08 16:15   ` Swâmi Petaramesh
2012-10-08 16:31     ` Josef Bacik

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