In message <alpine.deb.2.02.1308221357240.12...@nftneq.ynat.uz>,
David Lang writes:
>On Thu, 22 Aug 2013, John P. Rouillard wrote:
>> In trying to troubleshoot a problem with an application, I want to
>> include the prior 10 minutes of iostat info along with the report. I
>> have the rules to detect the problem in the application but I am not
>> sure how to capture/report the last 10 minutes of iostat info.
>>
>> When I was working with single line vmstat info, I could use this
>> little action snippet:
>>
>> action = add $1_vmstat_data $0 ; \
>> getsize %size $1_vmstat_data; \
>> lcall %gt10 %size -> ( sub { $_[0] > 10 } ); \
>> while %gt10 ( shift $1_vmstat_data %discard; \
>> getsize %size $1_vmstat_data; \
>> lcall %gt10 %size -> ( sub { $_[0] > 10 } ); \
>> ) ;
>>
>> to trim the _vmstat_data down to just 10 lines. Since I am shifting
>> off the old data and adding the new data I get the last 10 minutes.
>>
>> I would like to do the same with the iostat data, but it's multiline
>> data and I don't know how many lines will be in the data (it depends
>> on the command line values, how many disks are on the servers etc). I
>> know each report will start with the "avg-cpu:" header line (but a
>> different pid).
>I would be looking to limit based on time instead of number of events.
>Something like 'report the last 10 minutes of iostat' rather than
>'report the last 10 iostat sets of output'.
That would work as well.
>I'd have to go back through my saved mail or the list archives, but I
>seem to remember a recent discussion on how to do a time-based limit
>like this.
Maybe something with EventGroup??
--
-- rouilj
John Rouillard
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