Re: Best OS & Configuration for Dual Xeon w/4GB & Adaptec - Mailing list pgsql-performance

From Miguel
Subject Re: Best OS & Configuration for Dual Xeon w/4GB & Adaptec
Date
Msg-id 441F1AC5.9050700@123.com.sv
Whole thread Raw
In response to Re: Best OS & Configuration for Dual Xeon w/4GB &  ("Luke Lonergan" <llonergan@greenplum.com>)
Responses Re: Best OS & Configuration for Dual Xeon w/4GB &  ("Luke Lonergan" <llonergan@greenplum.com>)
List pgsql-performance
Luke Lonergan wrote:

>Miguel,
>
>On 3/20/06 12:52 PM, "Miguel" <mmiranda@123.com.sv> wrote:
>
>
>
>>i have a HP dl380 g3 with array 5i controlled (1+0), these are my results
>>
>>
>
>Another "known bad" RAID controller.  The Smartarray 5i is horrible on Linux
>- this is the first BSD result I've seen.
>
>
>
>>Seek times:
>>        Full stroke:      250 iter in   1.138232 sec =    4.553 msec
>>        Half stroke:      250 iter in   1.084474 sec =    4.338 msec
>>
>>
>
>These seem OK - are they "access times" or are they actually "seek times"?
>
>
i dont know, how can i check?

>Transfer rates:
>        outside:       102400 kbytes in   2.075984 sec =    49326 kbytes/sec
>        middle:        102400 kbytes in   2.100510 sec =    48750 kbytes/sec
>        inside:        102400 kbytes in   2.042313 sec =    50139 kbytes/sec
>
>
>is this good enough?
>It's pretty slow.  How many disk drives do you have?
>
>
>
>
I have 6 ultra a320 72G 10k discs

---
Miguel

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