dtrace discuss - Oct 2007 - Dtrace scripts for performance data gathering

I am looking for Dtrace scripts that can be used to
collect data during performance tests.  I am especially
interested in IO but CPU, memory, threads, etc are needed
as well.

Thanks,

Dave

Hi Dave - Without a more specific set of goals and objectives, I would not
start with DTrace. I would start with the standard set of "system"
tools:

- Collect iostat data to track IO rates and service times.
- Collect mpstat data to track CPU utilization and statistics.
- Collect prstat data to track process resource consumption
- Collect "prstat -m" data to track process/thread microstates
- Use nicstat for network data 
(http://blogs.sun.com/timc/entry/nicstat_the_solaris_network_monitoring)

Having said that, Brendan Gregg''s DTrace Toolkit is made-to-order:
http://www.brendangregg.com/dtrace.html#DTraceToolkit

Something like Brendan''s dexplorer is probably reasonable to start
with.

But, again, using DTrace to randomly collect system data is, in my opinion,
slightly off center in terms of why and when we use DTrace. There are
excellent bundled Solaris utilities that you should be using as a starting
point. Get a view of what the "system" is doing, then use dtrace to
drill-down.



Dave Burleson wrote:
> I am looking for Dtrace scripts that can be used to
> collect data during performance tests.  I am especially
> interested in IO but CPU, memory, threads, etc are needed
> as well.
>
> Thanks,
>
> Dave
> _______________________________________________
> dtrace-discuss mailing list
> dtrace-discuss at opensolaris.org
>

This is the purpose of *dexplorer *part of the DTrace toolkit.
It produces a .gz file .

-benoit

Dave Burleson wrote:
>I am looking for Dtrace scripts that can be used to
>collect data during performance tests.  I am especially
>interested in IO but CPU, memory, threads, etc are needed
>as well.
>
>Thanks,
>
>Dave
>_______________________________________________
>dtrace-discuss mailing list
>dtrace-discuss at opensolaris.org
>  
>
-- 

<http://www.sun.com> 	Benoit Chaffanjon
Customer Benchmarking
Sun Solution Center - *Sun Microsystems, Inc.*
12 Network Circle, UMPK12-128
Menlo Park, CA 94025 US
Phone 650-786-6177 (x86177)
Mobile 510-396-0104
Blog : Http://blogs.sun.com/MrBenchmark
Email benoit at sun.com
<http://www.sun.com>



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Dave Burleson wrote:
> I am looking for Dtrace scripts that can be used to
> collect data during performance tests.  I am especially
> interested in IO but CPU, memory, threads, etc are needed
> as well.
Start with sysperfstat, nicstat [1] - we are using these 100% inside our 
projects with very much success. swapinfo as well could help you.
As well the other friends are around: vmstat, mpstat, iostat, corestat 
(if on Niagara)

I would as well enable process accounting + extended process accounting.

I wouldn''t start with DTrace from step 1. If I would find a problem or 
something interesting to understand I would select one of DTT''s utility
and start drilling :)

thanks,
Stefan

---
[1] http://www.brendangregg.com/k9toolkit.html