Date: Thu, 17 Nov 2005 11:24:16 -0500 From: Pierre-Luc Drouin <pldrouin@pldrouin.net> To: Pierre-Luc Drouin <pldrouin@pldrouin.net> Cc: freebsd-stable@freebsd.org Subject: Re: Performance problem since updating from 6.0-RELEASE to 6.0-STABLE last friday Message-ID: <437CAEB0.9060202@pldrouin.net> In-Reply-To: <437B42C0.9040605@pldrouin.net> References: <4377775B.3080606@pldrouin.net> <20051114105854.GA1041@galgenberg.net> <4378CC14.2020109@pldrouin.net> <ygek6f9g83g.wl%ume@mahoroba.org> <437A3901.8010001@pldrouin.net> <437A3B96.4040300@root.org> <437B42C0.9040605@pldrouin.net>
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Pierre-Luc Drouin wrote: > Nate Lawson wrote: > >> Pierre-Luc Drouin wrote: >> >>> Hajimu UMEMOTO wrote: >>> >>>>>>>>> On Mon, 14 Nov 2005 12:40:36 -0500 >>>>>>>>> Pierre-Luc Drouin <pldrouin@pldrouin.net> said: >>>>>>>> >>>>>>>> >>>> pldrouin> Yep, smart battery is definately the problem. The >>>> performance of my pldrouin> laptop is back to normal when I remove >>>> the xfce4-battery-plugin. pldrouin> acpiconf -i loop reproduces the >>>> problem for me too. So it looks like pldrouin> there is something >>>> wrong in smart battery. >>>> >>>> The cmbat has similar issue on some laptops. So, acpi_cmbat.c uses >>>> cache for retrieval to reduce its influence, and its expiration >>>> time is set by hw.acpi.battery.info_expire. >>>> However, acpi_smbat.c doesn't use cache. So, I made a patch. Since I >>>> don't have a laptop which has smbat, I cannot test it by myself. >>>> Please test it and let me know the result. >>>> >>>> >>> The patch seams to do its job correctly, but it is still very >>> annoying to have the whole computer to freeze for 1 second when the >>> cache expires. What does make the whole system to freeze? Before the >>> code was changed in 6.0-stable, FreeBSD was able to read the battery >>> status without freezing my laptop... I have been running 3 OSes >>> (FreeBSD, Ubuntu and Win XP) on my laptop for a while and never >>> experienced that kind of problem with either Linux or Win XP. I >>> guess there is something wrong in the new code added after 6.0-release. >> >> >> >> If you have both smbat and cmbat, just disable smbat if you don't >> like it. Add this to /boot/loader.conf: >> >> debug.acpi.disabled="smbat" >> >> The pause is related to a buggy or slow EC. Caching the values >> happens to hide it. Do you get pauses with smbat disabled (see above >> for how to do this)? Can you still get battery status from cmbat? >> > Ok, there is new development. I realized by playing with > debug.acpi.disabled="smbat", debug.acpi.disabled="smbat cmbat" and > debug.acpi.disabled="cmbat", that my laptop battery is not a smbat, > but a cmbat. When I played with hw.acpi.battery.info_expire after to > have applied the patch for acpi_smbat.c, it was freezing less often > because that sysctl variable was shared by both cmbat and smbat. So I > can only get battery status from cmbat (disabling cmbat disables the > use of acpiconf -i loop). To get the status of my battery via cmbat > was working fine up to 6.0-RELEASE (included), but makes my laptop to > freeze since I upgraded to 6.0-stable with Nov 10th sources. What > change related to cmbat between 6.0-release and 6.0-stable could be > causing this? > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > Has someone found how to fix this problem in -stable? Thank you
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