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____/ Lusotec on Friday 19 Aug 2011 19:57 : \____
> Homer wrote:
>> Just tried btrfs for the first time here, albeit on an ancient PC, but
>> it's the ratios that piqued my interest.
>>
>> ext4 -> ext4:
>> rsync -v --progress /home/homer/videos/big_buck_bunny_720p_h264.mp4 /tmp
>> big_buck_bunny_720p_h264.mp4
>> c 100% 9.92MB/s 0:00:40 (xfer#1, to-check=0/1)
>>
>> btrfs -> btrfs:
>> rsync -v --progress /mnt/test1/big_buck_bunny_720p_h264.mp4 /mnt/test2
>> big_buck_bunny_720p_h264.mp4
>> 416808280 100% 18.37MB/s 0:00:21 (xfer#1, to-check=0/1)
>>
>> That's twice as fast on the same drive.
>>
>> Holy shit!
>>
>> "WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL
>> WARNING! - see http://btrfs.wiki.kernel.org before using"
>
> Copying just 400 MiB will not give you an accurate measure because of the
> cache. Try the same test on a good number of files and directories with
> several times the memory size of the machine. Then you will get a more
> realistic comparison of the file systems' performance.
>
> Regards.
Recently, on a friend's machine, she deleted about 200 files from a USB key
under Windows, Time taken: over a minute. In Linux: 2 seconds.
Why should Homer not also add Windows to the comparison. It would be fun!
- --
~~ Best of wishes
Dr. Roy S. Schestowitz (Ph.D. Medical Biophysics), Imaging Researcher
http://Schestowitz.com | GNU/Linux administration | PGP-Key: 0x74572E8E
Editor @ http://techrights.org & Broadcaster @ http://bytesmedia.co.uk/
GPL-licensed 3-D Othello @ http://othellomaster.com
Non-profit search engine proposal @ http://iuron.com
Contact E-mail address (direct): s at schestowitz dot com
Contact Internet phone (SIP): schestowitz@xxxxxxxxx (24/7)
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