Date: Mon, 29 May 2006 21:30:24 +0200 From: Gary Jennejohn <garyj@jennejohn.org> To: Jeremie Le Hen <jeremie@le-hen.org> Cc: freebsd-current@FreeBSD.org Subject: Re: timer goes sluggish Message-ID: <200605291930.k4TJUOjV082272@peedub.jennejohn.org> In-Reply-To: Message from Jeremie Le Hen <jeremie@le-hen.org> of "Mon, 29 May 2006 17:31:03 %2B0200." <20060529153103.GA17178@obiwan.tataz.chchile.org>
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Jeremie Le Hen writes: > IOW, using ACPI-fast as timecounter leads to have "sleep 1" actually > sleep for 6~7 seconds. Using TSC as timecounter is even weirder since it > desynchronize the computer's clock. > This isn't necessarily an accurate statement, as proved by this output on my machine: garyj:peedub:freebsd:-bash:23> sysctl kern.timecounter.hardware kern.timecounter.hardware: ACPI-fast garyj:peedub:freebsd:-bash:24> while : ; do date ; sleep 1 ; done Mon May 29 21:26:34 CEST 2006 Mon May 29 21:26:35 CEST 2006 Mon May 29 21:26:36 CEST 2006 Mon May 29 21:26:37 CEST 2006 Mon May 29 21:26:38 CEST 2006 Mon May 29 21:26:39 CEST 2006 Mon May 29 21:26:40 CEST 2006 Mon May 29 21:26:41 CEST 2006 Mon May 29 21:26:42 CEST 2006 and so on ad nauseum. No problem on my machine. Must be something specific to your set up. --- Gary Jennejohn / garyjATjennejohnDOTorg gjATfreebsdDOTorg garyjATdenxDOTde
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