Sorry Christian, but with the latest and greatest, there are many cases where
Linux and
TOP now seriously under report utilization (I think by factor of 5 in the lab,
and by 4 in
a production server). Not sure we've bothered to report the details since this
problem
would not impact our users. So the data still can not be used for serious
performance
work, capacity planning or accounting/chargeback. It's like putting gas in a
car, and the
price per "unit" varies with the number of other people wanting gas. Doesn't
lead one to
trust the instrumentation.
Christian Borntraeger wrote:
Am Montag, 8. Dezember 2008 schrieb Barton Robinson:
Yes, top lies.
This is no longer true with SLES10+ and RHEL5+. They use the stpt instruction
for accurate accounting.
If you still see wrong numbers with a recent distro, this would be a bug and
should be reported.
----------------------------------------------------------------------
For LINUX-390 subscribe / signoff / archive access instructions,
send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit
http://www.marist.edu/htbin/wlvindex?LINUX-390
begin:vcard
fn:Barton Robinson
n:Robinson;Barton
adr;dom:;;PO 390640;Mountain View;CA;94039-0640
email;internet:[EMAIL PROTECTED]
title:Sr. Architect
tel;work:650-964-8867
note:If you can't measure it, I'm just not interested
x-mozilla-html:FALSE
url:http://velocitysoftware.com
version:2.1
end:vcard
