[Pvfs2-users] I'm in the dark, need someone to shed some light

[Sam Lang]

On May 13, 2008, at 12:26 PM, belcampo wrote:

> Hi all,
>
> Have 2.7.1 installed and see things I don't understand, maybe  
> someone could shed some light ?
>
> Copying dvd.iso with cp -r from pvfs2 to local takes 1:34.79

Henk,

Are you copying an iso file or a directory (with -r)?

>
> Local extracting of audio and video takes 2:47.63
> From pvfs2 the same action takes approx 2:40:00
> After 8 minutes 5% is done.


What's your hardware setup?  I think cp by default uses a 4kb transfer  
size, and extracting files is probably smaller than that.  If these  
are relatively small files, and the programs you're using use  
relatively small transfer sizes, PVFS won't perform better than  
straight up local disk.

-sam

>
>
> Henk Schoneveld
>
> _______________________________________________
> Pvfs2-users mailing list
> Pvfs2-users at beowulf-underground.org
> http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 2417 bytes
Desc: not available
Url : http://www.beowulf-underground.org/pipermail/pvfs2-users/attachments/20080513/cd9e2e0d/smime.bin