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Re: Performance testing question:



Pete Clarke wrote:
> Hi all,
> 
> I have been doing some performance testing on my file server, the specs
> of the machine are:
> 
> Compaq Proliant 6500
> Quad Pentium Pro 200/1MB cache
> 2GB Ram
> 2 x 2/DH Hardware RAID controllers
> 1 x Emulex LP8000 Fibre Channel controller
> Dual 10/100 NIC (Intel)
> Fibre 1000 NIC (Intel)
> (All PCI slots are 32-bit/33 Mhz.)
> 
> This is connected, via a Storageworks San Switch 8 (basically a Brocade
> Silkworm 2400) to two :
> 
> Storageworks 4000 fibre channel enclosure, each with 12 x 36GB U160,
> 10,000rpm drives arranged as 2 logical RAID 5 drives.
> 
> The box is running Debian Sarge, fully patched upto date.
> 
> I realise the hardware is not exactly top of the range, but I thought
> I'd see what it would do.
> 
> OK, so I have run a few tests, but settled on dbench as it's *really*
> easy to use :-)
> I am seeing about 54MB/sec when run on the fibre connected drive(s), and
> about 90MB/sec when using the 2/DH controllers...this seems a little
> odd, as the 2/DH are only supposed to be 40 MB/sec interfaces, whereas
> the LP8000 is a 1Gb/sec card - I would expect to be seeing closer to
> 100MB/sec from the fibre devices ....
> 
>> From local, 2/DH filesystems:
> 
> bungo:/tmp# dbench 2
> 2 clients started
>   0     62477  90.67 MB/sec
> Throughput 90.6613 MB/sec 2 procs
> 
>> From FC connected:
> 
> bungo:/export/iso# dbench 2
> 2 clients started
>   0     62477  44.23 MB/sec
> Throughput 44.2259 MB/sec 2 procs
> 
> Is there anything else I can try, or do these figures seem reasonable to
> everyone?
> 
> Cheers,
> 

I would ask your question on the debian-isp list.  You are more likely
to find people there that have dealt with this level of hardware.

-Roberto


-- 
Roberto C. Sanchez
http://familiasanchez.net/~roberto

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