Peter
As a general approach for tuning a complex, working system, the first
step is to identify bottlenecks under real load, that includes both IO
rates per process and CPU rate per process.
Your method is good for a static system where you have complete control
of the applications - I am not sure it is applicable in most production
environments - (see my reply to Gilad in a separate thread)
cheers
Danny
Peter wrote:
I think that the gprof output and equivalent is the furthest one can
go to appreciate IO stats. I simply measured disk system throughput
(using hdparm etc) and then tuned my programs until they ran almost
that fast, then stopped worrying. For other types of IO the maximum
bandwidth can be appreciated using hardware data and then interpreted
as above.
Peter
=================================================================
To unsubscribe, send mail to [EMAIL PROTECTED] with
the word "unsubscribe" in the message body, e.g., run the command
echo unsubscribe | mail [EMAIL PROTECTED]
--
Danny Lieberman
Call us today!
--------------------------------------------------------------------------------------------
www.software.co.il - Deliver secure software to your customers
www.opensolutions.co.il - Reduce operational risk of information security
www.extrusiondetection.net - Stop data theft
www.software.co.il/pta - Download a free copy of the PTA-Practical threat
analysis tool
--------------------------------------------------------------------------------------------
Tel Aviv + 972 3 610-9750
Bethesda + 1-301-841-7122
Cell + 972 54 447-1114
=================================================================
To unsubscribe, send mail to [EMAIL PROTECTED] with
the word "unsubscribe" in the message body, e.g., run the command
echo unsubscribe | mail [EMAIL PROTECTED]
