From: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
To: kvm-ppc@vger.kernel.org
Subject: Re: [kvm-ppc-devel] little initial performance measurement
Date: Fri, 28 Mar 2008 14:58:26 +0000 [thread overview]
Message-ID: <47ED0792.7060006@linux.vnet.ibm.com> (raw)
In-Reply-To: <47ED0581.5080201@linux.vnet.ibm.com>
Christian Ehrhardt wrote:
> A little Timing check:
> sleep 30s vs. real clock 30s
> Host:
> Guest: TODO
>
I know this test is very fuzzy, but it can give a feelign if timing is broken completely or not. I have seen systems with broken timing in the past and it can affect a lot of thing in weird ways :-)
Host:
bash-3.00# time sleep 30s
real 0m30.026s
user 0m0.000s
sys 0m0.000s
real clock ~30sec
Guest:
bash-3.00# time sleep 30s
real 0m32.680s
user 0m1.556s
sys 0m1.092s
real clock ~32sec
So basic timing is ok, the 2 extra seconds are from the rest of the app around the sleep itself.
--
Grüsse / regards,
Christian Ehrhardt
IBM Linux Technology Center, Open Virtualization
-------------------------------------------------------------------------
Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services for
just about anything Open Source.
http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace
_______________________________________________
kvm-ppc-devel mailing list
kvm-ppc-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/kvm-ppc-devel
prev parent reply other threads:[~2008-03-28 14:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-28 14:49 [kvm-ppc-devel] little initial performance measurement Christian Ehrhardt
2008-03-28 14:58 ` Christian Ehrhardt [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=47ED0792.7060006@linux.vnet.ibm.com \
--to=ehrhardt@linux.vnet.ibm.com \
--cc=kvm-ppc@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox