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Re: Timestamp race avoidance in do_update()
From: |
Laine Stump |
Subject: |
Re: Timestamp race avoidance in do_update() |
Date: |
14 Feb 2001 13:16:02 -0500 |
User-agent: |
Gnus/5.0808 (Gnus v5.8.8) Emacs/20.7 |
BTW - on the subject of this sleep, I've found that it *greatly*
improves the amount of time it takes a rather long script to run if I
remove the sleep in the client. I know that's dangerous and stupid in
the general case, but in my specific case it doesn't cause any harm.
What I'm wondering is if we could change the "sleep(1); to be a
usleep(200) in a while loop instead. This should trim 1/2 a second
from each invocation of commit, on average, which can be quite a lot
when you're talking about several thousand files with dozens of
revisions for each...
address@hidden (Larry Jones) writes:
> Brad Chisholm writes:
> >
> > Just to make sure I understand, CVS is sleeping to ensure that any post-CVS
> > process which might modify the file must also change the timestamp. This
> > is necessary, because the CVS client relies on the timestamp to determine
> > whether a file has been modified. (i.e. if the current timestamp of the
> > file matches the timestamp stored in the Entries file, then the client
> > will consider the file unchanged, even if the contents have actually
> > changed).
>
> Exactly. As I said in the thread you quoted, you should send all of the
> file information first and then a single update command, not a separate
> update command for each file. Also, the current development version no
> longer sleeps when in server mode; it is up to the client to do it
> instead.
>
> -Larry Jones
>
> Monopoly is more fun when you make your own Chance cards. -- Calvin
>
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> address@hidden
> http://mail.gnu.org/mailman/listinfo/info-cvs
- Timestamp race avoidance in do_update(), Brad Chisholm, 2001/02/12
- Re: Timestamp race avoidance in do_update(), Larry Jones, 2001/02/13
- Re: Timestamp race avoidance in do_update(),
Laine Stump <=
- Re: Timestamp race avoidance in do_update(), Larry Jones, 2001/02/14
- Re: Timestamp race avoidance in do_update(), Laine Stump, 2001/02/14
- Re: Timestamp race avoidance in do_update(), Larry Jones, 2001/02/14
- Re: Timestamp race avoidance in do_update(), Derek R. Price, 2001/02/14
- Re: Timestamp race avoidance in do_update(), Brad Chisholm, 2001/02/16
- Re: Timestamp race avoidance in do_update(), Laine Stump, 2001/02/16
- Re: Timestamp race avoidance in do_update(), Derek R. Price, 2001/02/16
- Re: Timestamp race avoidance in do_update(), Larry Jones, 2001/02/16
- Re: Timestamp race avoidance in do_update(), Derek R. Price, 2001/02/16
- Re: Timestamp race avoidance in do_update(), Paul Sander, 2001/02/15