From: Cyril Hrubis <chrubis@suse.cz>
To: ltp-list@lists.sourceforge.net
Subject: Re: [LTP] questions about getrusage04
Date: Mon, 8 Dec 2014 13:09:22 +0100 [thread overview]
Message-ID: <20141208120922.GD11071@rei.suse.de> (raw)
In-Reply-To: <20141206012422.GA3352@localhost.localdomain>
Hi!
> I cannot understand why udelta/sdelta > "1000+(BIAS_MAX*factor_nr)" is a
> problem. Could any expert give me a explain, please?
It tests timer precision for getrusage timers. If the timers are
incremting by larger values than expected, something is wrong in kernel.
The precision depends on CONFIG_HZ settings which is represented by the
BIAS_MAX.
> And looks like with this patch applied, it works well on powerpc:
Can you please share the output of the testcase on ppc and ppc64? What
is the expected timer granularity there?
--
Cyril Hrubis
chrubis@suse.cz
------------------------------------------------------------------------------
Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
from Actuate! Instantly Supercharge Your Business Reports and Dashboards
with Interactivity, Sharing, Native Excel Exports, App Integration & more
Get technology previously reserved for billion-dollar corporations, FREE
http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk
_______________________________________________
Ltp-list mailing list
Ltp-list@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/ltp-list
next prev parent reply other threads:[~2014-12-08 12:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-06 1:24 [LTP] questions about getrusage04 Han Pingtian
2014-12-08 12:09 ` Cyril Hrubis [this message]
2014-12-08 13:03 ` Han Pingtian
2014-12-08 13:19 ` Cyril Hrubis
2014-12-08 13:52 ` Han Pingtian
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=20141208120922.GD11071@rei.suse.de \
--to=chrubis@suse.cz \
--cc=ltp-list@lists.sourceforge.net \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.