[OpenIndiana-discuss] iostat

[jason matthews]

the system config is as follows:

4x 4650L, 576GB of RAM, 8x 800GB DC S3700 load balanced over 2x LSI 9207-8i

there is no swap. i am only running filebench on the pool so far.


j.

On Oct 11, 2013, at 9:28 AM, Jonathan Adams <t12nslookup at gmail.com> wrote:

> Ouch! they are _some_ drives ...
> 
> do you have "swap" running on them? how much ram do you have in that
> machine?
> 
> 
> On 11 October 2013 16:44, Jason Matthews <jason at broken.net> wrote:
> 
>> 
>> i would say so. they are 800gb intel dc s3700s
>> 
>> j.
>> 
>> Sent from Jasons' hand held
>> 
>> On Oct 11, 2013, at 1:08 AM, Jonathan Adams <t12nslookup at gmail.com> wrote:
>> 
>>> do you have "Enterprise" grade disks in your machine?  We saw a lot of %b
>>> and %w associated with "Consumer" Seagate disks ... not all the time, and
>>> not for over a year in production, but once it started happening across
>>> multiple servers we cottoned on pretty quickly.
>>> 
>>> 
>>> On 10 October 2013 21:39, jason matthews <jason at broken.net> wrote:
>>> 
>>>> 
>>>> I am not sure when reporting zpool stats was introduced into iostat but
>> i
>>>> love it. however, i am not sure what to make of it.
>>>> 
>>>> For instance, what does a wsvc time of 20 seconds tell me? seems like my
>>>> queue is too big but that is not reflected in individual device
>> statistics.
>>>> in the case of zpools, is this some sort of reflection on transaction
>>>> groups?
>>>> 
>>>> can anyone explain why i see such large time associated with zpool in
>> the
>>>> iostat output?
>>>> 
>>>> thanks,
>>>> j.
>>>> 
>>>>                   extended device statistics
>>>>   r/s    w/s        Mr/s   Mw/s    wait     actv  wsvc_t asvc_t  %w  %b
>>>> device
>>>>   0.0 3958.7    0.0  300.7       0.1     18.8   0.0       4.7        0
>>>> 153   c3
>>>>   0.0   11.8       0.0    0.1         0.0      0.0    0.0       0.6
>>>>   0       0    c3t55CD2E400012A66Cd0
>>>>   0.0    0.0        0.0    0.0         0.0      0.0    0.0       0.0
>>>>   0       0    c3t55CD2E400012B753d0
>>>>   0.0 2679.7    0.0  149.1       0.1      9.9    0.0       3.7        5
>>>>   80    c3t50015178F36579E8d0
>>>>   0.0 1267.2    0.0  151.5       0.0      8.8    0.0       7.0        3
>>>>   73    c3t50015178F3657B74d0
>>>>   0.0    0.0        0.0    0.0          0.0      0.0    0.0       0.0
>>>>    0       0    c3t50015178F3657AECd0
>>>>   0.0    0.0        0.0    0.0         0.0       0.0    0.0       0.0
>>>>    0       0    c3t50015178F36579E1d0
>>>>   0.0    0.0        0.0    0.0         0.0       0.0    0.0       0.0
>>>>    0       0    c3t50015178F3657B85d0
>>>>   0.0    0.0        0.0    0.0         0.0       0.0    0.0       0.0
>>>>    0       0    c3t50015178F36579BAd0
>>>>   0.0    0.0        0.0    0.0         0.0       0.0    0.0       0.0
>>>>    0       0    c3t50015178F3657A05d0
>>>>   0.0    0.0        0.0    0.0         0.0       0.0    0.0       0.0
>>>>    0       0    c3t50015178F36579FEd0
>>>>   0.0    0.0        0.0    0.0         0.0       0.0    0.0       0.0
>>>>    0       0    c5
>>>>   0.0    0.0        0.0    0.0         0.0       0.0    0.0       0.0
>>>>    0       0    c5t4d0
>>>>   0.0 3946.1    0.0  300.6  80582.9 26.2 20421.0  6.6  88    89 data
>>>>   0.0   11.6    0.0    0.1  0.0  0.0    1.1    0.8   0   0 rpool
>>>> 
>>>> 
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