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List:       plug-mail
Subject:    Re: [PLUG] Btrfs more than twice as fast compared to ext4
From:       Vishal Rao <vishalrao () gmail ! com>
Date:       2010-03-15 1:59:53
Message-ID: aacba7e1003141847v4287aa99ga2333d61e4864aa () mail ! gmail ! com
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Follow-up (with lotsa ubuntu sudo love):

vishal@thunderbird:/media$ sudo mkdir btrfs
vishal@thunderbird:/media$ sudo mkdir ext4
vishal@thunderbird:/media$ sudo mount /dev/sda7 btrfs
vishal@thunderbird:/media$ sudo mount /dev/sda8 ext4

vishal@thunderbird:/media$ sudo hdparm -t /dev/sda7

/dev/sda7:
 Timing buffered disk reads:  578 MB in  3.00 seconds = 192.59 MB/sec

vishal@thunderbird:/media$ sudo hdparm -t /dev/sda8

/dev/sda8:
 Timing buffered disk reads:  598 MB in  3.01 seconds = 198.80 MB/sec

vishal@thunderbird:/media$ sudo umount btrfs
vishal@thunderbird:/media$ sudo umount ext4

vishal@thunderbird:/media$ sudo hdparm -t /dev/sda7

/dev/sda7:
 Timing buffered disk reads:  584 MB in  3.01 seconds = 194.23 MB/sec

vishal@thunderbird:/media$ sudo hdparm -t /dev/sda8

/dev/sda8:
 Timing buffered disk reads:  610 MB in  3.01 seconds = 202.94 MB/sec

ext4 is mounted with the noatime option and btrfs mounted with the
ssd option. also, ubuntu generic kernel 2.6.32.16.17 booted with the
libata.force=noncq option to avoid some problems with my BIOS/SSD.

-- 
"Thou shalt not follow the null pointer for at its end madness and chaos lie."

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