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[btrfs] poor delete+snapshot performance

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d2_racing
Bodhisattva

Joined: 25 Apr 2005
Posts: 13047
Location: Ste-Foy,Canada

Posted: Sun Dec 16, 2012 2:04 am Post subject: [btrfs] poor delete+snapshot performance

Hi everyone, since I'm using btrfs on my Intel SSD 520 serie, I noticed that my btrfs lock my filesystem when I run emerge -C commands.

It's really weird, because when it happends, it's like my PC freeze.

Also, when I do some snapshots of my subvolume, it can takes from 10 secondes to 10 minutes to run even if it's only a subvolume of 4 gigs.

Right now , I'm using this :

Code:

/dev/sda4 / btrfs defaults,noatime,ssd,discard,compress=lzo,subvol=@racine 0 1

Should I use EXT4 instead or is there any performance monitor that I could use to test my current filesytem ? Thanks

Finally, if I want to migrate to ext4,can I use these options ?

Code:

/dev/sda4 / ext4 defaults,data=ordered,noatime, 0 1

Thanks

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