[rescue] playing with the new E250 ... disk performance vs. old PeeCee

[Bryan Gurney]

On Sat, 16 Dec 2006 23:35:04 -0500, Lionel Peterson  
<lionel4287 at verizon.net> wrote:

>> From: Magnus <magnus at yonderway.com>
>> Date: 2006/12/16 Sat PM 05:25:02 CST
>> To: The Rescue List <rescue at sunhelp.org>
>> Subject: Re: [rescue] playing with the new E250 ... disk performance  
>> vs. old PeeCee
>
>> I wrote:
>>> Looks more like it maxes out at 20MB/sec.
>>
>>
>> Just to answer my own question, http://www.e250.net/ says of the E250:
>> "One 40MB/sec, 68-pin,Ultra SCSI (SCSI-3), 2 channels (synchronous)"
>>
>> So my bottleneck is elsewhere.
>
> The E250 is just really an Ultra 2 in a different box (of course it is  
> PCI not SBUS, and can't take a UPA framebuffer (vertical or horizontal).
>
> I like the E250 (mainly for the 6x SCSI trays), but they are not the be  
> all/end all servers for their size...
>

Doing a metattach on my U60 right now to build the mirrored volumes  
(FINALLY; I bought the 73 GB 10K Cheetah drives back in, what, April?):

# iostat 1
    tty        md10          md11          md12          md20           cpu
  tin tout kps tps serv  kps tps serv  kps tps serv  kps tps serv   us sy  
wt id
    0   23 28688 459    2  14427 236    2  18171 285    2    0   0   31     
3  7  0 90
    0  238 36494 570    2  18280 286    2  18216 285    2    0   0    0     
0  4  0 95
    0   86 36636 572    2  18318 286    2  18318 286    2    0   0    0     
0  3  0 97
    0   86 36413 569    2  18175 284    2  18239 285    2    0   0    0     
0  4  0 96
    0   86 36481 570    2  18240 285    2  18240 285    2    0   0    0     
0  4  0 96
    0   86 36468 570    2  18234 285    2  18234 285    2    0   0    0     
0  4  0 96
    0   86 36610 572    2  18305 286    2  18305 286    2    0   0    0     
0  4  0 96
    0   86 36491 570    2  18245 285    2  18245 285    2    0   0    0     
0  4  0 96
    0   86 36794 575    2  18429 288    2  18365 287    2    0   0    0     
0  3  0 97
    0   86 36740 574    2  18370 287    2  18370 287    2    0   0    0     
0  3  0 97
    0   87 36776 575    2  18356 287    2  18420 288    2    0   0    0     
0  3  0 97

18 MB/sec per disk isn't too bad.  It's nowhere near what a modern fast  
bus machine built in the last five years can deliver, though.

And for you Quake 3 fans out there, REGENERATION!!

d10: Mirror
     Submirror 0: d11
       State: Okay
     Submirror 1: d12
       State: Resyncing
     Resync in progress: 10 % done
     Pass: 1
     Read option: roundrobin (default)
     Write option: parallel (default)
     Size: 141723856 blocks (67 GB)

d11: Submirror of d10
     State: Okay
     Size: 141723856 blocks (67 GB)
     Stripe 0:
         Device     Start Block  Dbase        State Reloc Hot Spare
         c0t0d0s0          0     No            Okay   Yes


d12: Submirror of d10
     State: Resyncing
     Size: 141723856 blocks (67 GB)
     Stripe 0:
         Device     Start Block  Dbase        State Reloc Hot Spare
         c0t1d0s0          0     No            Okay   Yes