[PVFS-users] Bonnie benchmarks

[Rob Ross]

Kevin,

Heh...yeah, we've seen similar behavior before.  I have tried to track
this down with little success.  Perhaps it is a TCP-related issue (slow
start or odd packetization)?  Is the behavior consistent over multiple
runs for you?  We've seen some cases where it is consistently like this,
and others where it is not.

I'd love to track down what is causing this :).

Rob

On Thu, 20 Jul 2000, Kevin Makles wrote:

> I've been running a few benchmarks to test out PVFS and found some strange 
> results when I ran the Bonnie Benchmark.  The strange results only occur in 
> the  Block write benchmark.  Here are the results from a 4 I/O node system 
> with 100Mbit ethernet interconnect using version 1.4.4 of PVFS.
>   
>  KB out     input
>   3  2483   4237
>   4  5334   4369
>   5  3681   5654
>   6  2973   6238
>   7  4736   6736
>   8  4705   6356
>   9  5030   7470
>  10   563   7577
>  11  4672   7800
>  14  3904   8417
>  15  5611   8659
>  16   820   8795
>  17  4434   8789
>  18  4702   8981
>  30  2183   9828
>  31  4924   9871
>  32 10022   9915
>  33  2420   9968
>  34  4584   9904
>  64  3243  10596
> 128  5048  10996
>                     
> Where KB is the value of Chunk in the Bonnie source and out and input columns 
> are in KB/s
> -- 
> Kevin Makles
> NERSC Future Technologies Group
> Lawerence Berkeley Laboratory