From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Travis Subject: Re: ACPI acpi_processor_get_throttling_info taking excessive time? Date: Tue, 27 Apr 2010 10:19:03 -0700 Message-ID: <4BD71C87.8020501@sgi.com> References: <4BD4F0A5.7050208@sgi.com> <1272248522.25088.67.camel@rzhang1-desktop> <4BD5D81B.4020600@sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from relay1.sgi.com ([192.48.179.29]:52960 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755823Ab0D0RTG (ORCPT ); Tue, 27 Apr 2010 13:19:06 -0400 In-Reply-To: Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Len Brown Cc: Zhang Rui , "linux-acpi@vger.kernel.org" , Jack Steiner , Hedi Berriche , Robin Holt Len Brown wrote: >> ...I've added a new BZ: >> >> https://bugzilla.kernel.org/show_bug.cgi?id=15856 >> >> and attached the console output I collected from: >> >> ignore_loglevel acpi.debug_layer=0x2800001f acpi.debug_level=0x00000027 >> >> This took almost an hour to boot so adding all flags would not be >> practical. > > I don't see any attachments to that bug report. > > CONFIG_ACPI_DEBUG=y with > acpi.debug_layer=0x20000000 maxcpus=4 should do it. > > Also, the output from acpidump. > > thanks, > -Len Brown, Intel Open Source Technology Center > Hmm, I wonder why it didn't get put in? It was a gzipped text file. I'll add the above as soon as I get back on the system. I *think* this might be the relevant part. It repeats this sequence 1664 times: 584.386705 ( 0.000126)| [ 282.565042] processor_core-0609 [00] processor_get_info : Bus mastering arbitration control present 584.485405 ( 0.098700)| [ 282.577452] processor_core-0686 [00] processor_get_info : Processor [0:0] 584.485498 ( 0.000093)| [ 282.585423] processor_core-0689 [00] processor_get_info : No PBLK (NULL address) 584.485585 ( 0.000087)| [ 282.594175] ACPI: Execute Method [\_SB_.C000._PDC] (Node ffff8b27fc070210) 584.659625 ( 0.174040)| [ 282.705124] processor_throttling-1143 [00] processor_get_throttli: pblk_address[0x00000000] duty_offset[0] duty_width[0] 584.659764 ( 0.000139)| [ 282.717472] ACPI: Execute Method [\_SB_.C000._PTC] (Node ffff89affb0811f0) 584.659851 ( 0.000087)| [ 282.776192] ACPI: Execute Method [\_SB_.C000._TSS] (Node ffff8ae7fc0721f0) 584.750913 ( 0.091062)| [ 282.887162] processor_throttling-0482 [00] processor_get_throttli: Found 8 throttling states 584.751027 ( 0.000114)| [ 282.896661] processor_throttling-0502 [00] processor_get_throttli: Extracting state 0 584.751116 ( 0.000089)| [ 282.905454] processor_throttling-0502 [00] processor_get_throttli: Extracting state 1 584.751212 ( 0.000096)| [ 282.914245] processor_throttling-0502 [00] processor_get_throttli: Extracting state 2 584.751300 ( 0.000088)| [ 282.923042] processor_throttling-0502 [00] processor_get_throttli: Extracting state 3 584.858075 ( 0.106775)| [ 282.931843] processor_throttling-0502 [00] processor_get_throttli: Extracting state 4 584.858178 ( 0.000103)| [ 282.940654] processor_throttling-0502 [00] processor_get_throttli: Extracting state 5 584.858268 ( 0.000090)| [ 282.949441] processor_throttling-0502 [00] processor_get_throttli: Extracting state 6 584.858369 ( 0.000101)| [ 282.958233] processor_throttling-0502 [00] processor_get_throttli: Extracting state 7 584.858460 ( 0.000091)| [ 282.967170] ACPI: Execute Method [\_SB_.C000._TPC] (Node ffff8947fc0701f0) 584.858551 ( 0.000091)| [ 283.026637] processor_throttling-1189 [00] processor_get_throttli: Found 8 throttling states 584.858651 ( 0.000100)| [ 283.036188] processor_throttling-0845 [00] processor_get_throttli: Invalid throttling state, reset 584.958958 ( 0.100307)| [ 283.046279] processor_throttling-0265 [00] processor_throttling_n: PreChange Event:target T-state of CPU 0 is T0 584.959084 ( 0.000126)| [ 283.060729] processor_throttling-0275 [00] processor_throttling_n: PostChange Event:CPU 0 is switched to T0 584.959193 ( 0.000109)| [ 283.071686] ACPI: processor limited to max C-state 1 584.959262 ( 0.000069)| [ 283.077760] ACPI: Execute Method [\_SB_.C000._CST] (Node ffff8987fc09f1f0) 584.959340 ( 0.000078)| [ 283.139369] Monitor-Mwait will be used to enter C-1 state 585.043300 ( 0.083960)| [ 283.145718] Monitor-Mwait will be used to enter C-3 state 585.043375 ( 0.000075)| [ 283.151796] processor_idle-0519 [00] processor_get_power_in: Found 2 power states