From: Cyril Hrubis <chrubis@suse.cz>
To: ltp@lists.linux.it
Subject: [LTP] [PATCH v2] copy_file_range03: comparing timestamp in tst_timespec_diff
Date: Mon, 6 Sep 2021 12:38:00 +0200 [thread overview]
Message-ID: <YTXviHdUSqTaR1hx@yuki> (raw)
In-Reply-To: <CAEemH2frfyGCsZAsam7CgGfW-BC1ah9YQZz=H=meJMM+zrTnAw@mail.gmail.com>
Hi!
> Theoretically, this is correct, but I'm fearing that the process might
> cost more time on performing with different system loads.
>
> This means 'diff_us <= 2000000' is an unreliable condition to
> many virtual machines. That largely depends on the system
> scheduler at that moment as well.
Right, I guess that we can relax the upper bound, it can be even a
minute and it would still be a good sanity check.
--
Cyril Hrubis
chrubis@suse.cz
WARNING: multiple messages have this Message-ID (diff)
From: Cyril Hrubis <chrubis@suse.cz>
To: Li Wang <liwang@redhat.com>
Cc: LTP List <ltp@lists.linux.it>
Subject: Re: [LTP] [PATCH v2] copy_file_range03: comparing timestamp in tst_timespec_diff
Date: Mon, 6 Sep 2021 12:38:00 +0200 [thread overview]
Message-ID: <YTXviHdUSqTaR1hx@yuki> (raw)
Message-ID: <20210906103800.Ja3U0FhghIX6NSgOb7lhin6EYLlnrIj4D5cJF8BLeuQ@z> (raw)
In-Reply-To: <CAEemH2frfyGCsZAsam7CgGfW-BC1ah9YQZz=H=meJMM+zrTnAw@mail.gmail.com>
Hi!
> Theoretically, this is correct, but I'm fearing that the process might
> cost more time on performing with different system loads.
>
> This means 'diff_us <= 2000000' is an unreliable condition to
> many virtual machines. That largely depends on the system
> scheduler at that moment as well.
Right, I guess that we can relax the upper bound, it can be even a
minute and it would still be a good sanity check.
--
Cyril Hrubis
chrubis@suse.cz
--
Mailing list info: https://lists.linux.it/listinfo/ltp
next prev parent reply other threads:[~2021-09-06 10:38 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-06 6:00 [LTP] [PATCH v2] copy_file_range03: comparing timestamp in tst_timespec_diff Li Wang
2021-09-06 6:00 ` Li Wang
2021-09-06 7:54 ` xuyang2018.jy
2021-09-06 7:54 ` xuyang2018.jy
2021-09-06 8:59 ` Cyril Hrubis
2021-09-06 8:59 ` Cyril Hrubis
2021-09-06 10:35 ` Li Wang
2021-09-06 10:35 ` Li Wang
2021-09-06 10:38 ` Cyril Hrubis [this message]
2021-09-06 10:38 ` Cyril Hrubis
2021-09-06 10:42 ` Li Wang
2021-09-06 10:42 ` Li Wang
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