From: Vincent Lefevre <vincent@vinc17.net>
To: zsh-users@zsh.org
Subject: child time accounting is different from other shells
Date: Wed, 10 Sep 2014 14:30:32 +0200 [thread overview]
Message-ID: <20140910123032.GA19213@xvii.vinc17.org> (raw)
With all shells I could test except zsh,
time sh -c 'pi 500000 > /dev/null & sleep 2'
where "pi 500000 > /dev/null" lasts for less than 2 seconds
(or replace it with any command that takes CPU time less than
2 seconds), includes the time taken by this child process in
the user/system times, but not with zsh:
xvii% time sh -c 'pi 500000 > /dev/null & sleep 2'
sh -c 'pi 500000 > /dev/null & sleep 2' 1.16s user 0.02s system 58% cpu 2.017 total
xvii% time zsh -c 'pi 500000 > /dev/null & sleep 2'
zsh -c 'pi 500000 > /dev/null & sleep 2' 0.00s user 0.00s system 0% cpu 2.023 total
Is this a bug? Shouldn't this behavior be changed to make zsh
consistent with the other shells?
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
next reply other threads:[~2014-09-10 12:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-10 12:30 Vincent Lefevre [this message]
2014-09-10 21:02 ` Bart Schaefer
2014-09-16 10:45 ` Vincent Lefevre
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