From: Larry McVoy <lm@mcvoy.com>
To: Dave Horsfall <dave@horsfall.org>
Cc: The Eunuchs Hysterical Society <tuhs@tuhs.org>
Subject: Re: [TUHS] reboot(2) system call
Date: Sat, 30 Jan 2021 14:31:54 -0800 [thread overview]
Message-ID: <20210130223154.GP4227@mcvoy.com> (raw)
In-Reply-To: <alpine.BSF.2.21.9999.2101310922250.36435@aneurin.horsfall.org>
On Sun, Jan 31, 2021 at 09:27:10AM +1100, Dave Horsfall wrote:
> On Tue, 26 Jan 2021, Greg A. Woods wrote:
>
> >The lore I was told at the time was that you alwasy ran three and that it
> >didn't matter if they were all on the same line with semicolons or not
> >because of the very fact that the second one would block.
>
> What I was taught was:
>
> % sync
> % sync
> % sync
>
> and never:
>
> % sync; sync; sync
>
> The theory was that by waiting for the shell prompt each time, it gave the
> buffer pool enough time to be flushed.
I was taught the exact same thing and for the same reasons.
next prev parent reply other threads:[~2021-01-30 22:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-27 18:57 Warner Losh
2020-07-28 0:36 ` Clem Cole
2020-07-28 4:06 ` Dave Horsfall
2020-07-28 16:35 ` Win Treese
2020-07-28 13:11 ` Jaap Akkerhuis
2021-01-27 6:01 ` Greg A. Woods
2021-01-30 22:27 ` Dave Horsfall
2021-01-30 22:31 ` Larry McVoy [this message]
2021-01-30 22:37 ` Warner Losh
2021-02-02 2:20 ` Greg A. Woods
2021-02-02 2:30 ` Warner Losh
2021-02-02 20:30 ` Greg A. Woods
2021-02-02 3:35 ` Dave Horsfall
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