From: Alexander Clouter <alex@digriz.org.uk>
To: linux-kernel@vger.kernel.org
Subject: Re: Measuring startup-time from userspace
Date: Mon, 3 Jan 2011 05:12:24 +0000 [thread overview]
Message-ID: <oe28v7-g0t.ln1@chipmunk.wormnet.eu> (raw)
In-Reply-To: 4D20FEF0.5020206@mozilla.com
Taras Glek <tglek@mozilla.com> wrote:
>
> Does Linux provide a reasonable way to measure how long a process has
> existed for? The goal is to have a function that returns the number of
> milliseconds since process-creation.
>
At a glance:
----
alex@berk:~$ stat /proc/16863/
File: `/proc/16863/'
Size: 0 Blocks: 0 IO Block: 1024 directory
Device: 3h/3d Inode: 837808 Links: 6
Access: (0555/dr-xr-xr-x) Uid: ( 1000/ alex) Gid: ( 1000/ alex)
Access: 2011-01-03 05:07:47.888363341 +0000
Modify: 2011-01-03 05:07:47.888363341 +0000
Change: 2011-01-03 05:07:47.888363341 +0000
----
A nanosecond resolution timestamp for the moment when the pid is created
it seems. I could be completely wrong, but this seems to be one of
those "too easy to be true" moments.
Cheers
--
Alexander Clouter
.sigmonster says: Marriage is the sole cause of divorce.
prev parent reply other threads:[~2011-01-03 5:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-02 22:40 Measuring startup-time from userspace Taras Glek
2011-01-03 1:29 ` Ben Gamari
2011-01-03 5:12 ` Alexander Clouter [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=oe28v7-g0t.ln1@chipmunk.wormnet.eu \
--to=alex@digriz.org.uk \
--cc=linux-kernel@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 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.