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From: Cyril Hrubis <chrubis@suse.cz>
To: ltp@lists.linux.it
Subject: [LTP] [PATCH v2] [RFC] pselect01: Tune thresholds
Date: Mon, 15 May 2017 14:36:28 +0200	[thread overview]
Message-ID: <20170515123556.GA8280@rei.lan> (raw)
In-Reply-To: <495691788.11461692.1494842630946.JavaMail.zimbra@redhat.com>

Hi!
> while looking at fs/select.c I noticed that it also takes
> current->timer_slack_ns into account and uses that if 
> slack is smaller. Would it make sense to add ...?
>   slack_per_scall = MAX(slack_per_scall, prctl(PR_GET_TIMERSLACK) / 1000);
> The default is 50us, so maybe the 250us in formula covers this already?

I guess that the 50us is included in the 250us already. So what about
adding the line you sugests and decreasing the 250us to 200us?

-- 
Cyril Hrubis
chrubis@suse.cz

  parent reply	other threads:[~2017-05-15 12:36 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-12 14:16 [LTP] [PATCH v2] [RFC] pselect01: Tune thresholds Cyril Hrubis
2017-05-15 10:03 ` Jan Stancek
2017-05-15 10:20   ` Xiao Yang
2017-05-15 13:15     ` Jan Stancek
2017-05-15 13:23       ` Cyril Hrubis
2017-05-15 12:36   ` Cyril Hrubis [this message]
2017-05-15 13:00     ` Jan Stancek
2017-05-15 13:13       ` Cyril Hrubis
2017-05-15 13:16         ` Jan Stancek
2017-05-22  8:39         ` Jan Stancek
2017-05-22 12:04           ` Cyril Hrubis
2017-05-22 13:37             ` Jan Stancek
2017-05-22 13:19           ` Cyril Hrubis
2017-05-22 14:57             ` Jan Stancek
2017-05-22 15:15               ` Cyril Hrubis
2017-05-23  7:54                 ` Jan Stancek
2017-05-23  9:16                   ` Cyril Hrubis
2017-05-23  9:45                     ` Jan Stancek
2017-06-02 12:48                       ` Jan Stancek

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