[Linux-cluster] Low parallel write performance for GFS

[yf-263]

Hi, Tang,

I found our GFS on Darwin not so slowly as it is also 10MB/s on FC'ed
SAN disk ;)

Rongfeng Tang wrote:

>Hello everyone:
>	I want to test the GFS-6.0 by myself, the configuration is as
>follows:
>	2 GNBD server each with a dedicated SCSI disk, configured into one pool,
>    1 gulm lock server
>    10 clients
>    GE network
>using iozone ran  read and write testing on each client.
>the aggregate write performance I got only about 20% of raw device peformance (10MB/s), 
>even much more lower than what one client can get (20MB/S), what's problem with it?
>
>    Thanks a lot.
>
>   trf
>    
>    
>  
>
>
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