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Re: Dell Perc/6

From: Tore Halset <halset(at)pvv(dot)ntnu(dot)no>
To: Merlin Moncure <mmoncure(at)gmail(dot)com>
Cc: Craig James <craig_james(at)emolecules(dot)com>, Dave Cramer <pg(at)fastcrypt(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Dell Perc/6
Date: 2008-02-13 20:28:21
Message-ID: 95AB43CD-E533-4D07-8333-DA9168F78418@pvv.ntnu.no (view raw or flat)
Thread:
Lists: pgsql-performance
On Feb 13, 2008, at 20:45, Tore Halset wrote:

> The box have 16GB of ram, but my original test file was only 25GB.  
> Sorry. Going to 33GB lowered the numbers for writing. Here you have  
> some samples.
>
> % sh -c "dd if=/dev/zero of=bigfile bs=8k count=4000000 && sync"
> 32768000000 bytes (33 GB) copied, 103.722 seconds, 316 MB/s
> 32768000000 bytes (33 GB) copied, 99.669 seconds, 329 MB/s
>
> % time dd if=bigfile of=/dev/null bs=8k
> 32768000000 bytes (33 GB) copied, 85.4235 seconds, 384 MB/s
> 32768000000 bytes (33 GB) copied, 85.4628 seconds, 383 MB/s
>
> Regards,
> - Tore.

And here are the bonnie++ numbers. I am a bonnie++ newbie so I ran it  
with no options.

Version 1.03c       ------Sequential Output------ --Sequential Input-  
--Random-
                     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block--  
--Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec  
%CP  /sec %CP
harteigen    32136M 83983  97 221757  40 106483  19 89603  97 268787   
22 886.1   1
                     ------Sequential Create------ --------Random  
Create--------
                     -Create-- --Read--- -Delete-- -Create-- --Read---  
-Delete--
               files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec  
%CP  /sec %CP
                  16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++  
+++++ +++
harteigen,32136M, 
83983,97,221757,40,106483,19,89603,97,268787,22,886.1,1,16,+++++,+++,++ 
+++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++


Regards,
  - Tore.

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