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Old 12th April 2009
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Question Enhanced Speedstep only works for two CPU cores on FreeBSD 7.1

OS: FreeBSD 7.1-RELEASE-P4/amd64 (currently used) and /i386 (priorly used)
CPU: Intel Core 2 Quad Q9550
Motherboard: ASUS P5Q Deluxe - BIOS revision 2001 (latest)


When the system boots, EIST only initializes for CPU cores 0 and 2. 1 and 3 do not initialize. Powerd is enabled in rc.conf, to no avail.

I would greatly appreciate some assistance in solving this problem. I saw some ACPI errors in dmesg (full text is attached to the thread), but they mean nothing to me, and reading the man pages for acpi, cpufreq, and a couple other utilites turned up nothing.


Code:
cpu0: <ACPI CPU> on acpi0
ACPI Warning (tbutils-0243): Incorrect checksum in table [OEMB] -  D7, should be CE [20070320]
est0: <Enhanced SpeedStep Frequency Control> on cpu0
p4tcc0: <CPU Frequency Thermal Control> on cpu0
cpu1: <ACPI CPU> on acpi0
est1: <Enhanced SpeedStep Frequency Control> on cpu1
est: CPU supports Enhanced Speedstep, but is not recognized.
est: cpu_vendor GenuineIntel, msr 61a482206004822
device_attach: est1 attach returned 6
p4tcc1: <CPU Frequency Thermal Control> on cpu1
cpu2: <ACPI CPU> on acpi0
est2: <Enhanced SpeedStep Frequency Control> on cpu2
p4tcc2: <CPU Frequency Thermal Control> on cpu2
cpu3: <ACPI CPU> on acpi0
est3: <Enhanced SpeedStep Frequency Control> on cpu3
est: CPU supports Enhanced Speedstep, but is not recognized.
est: cpu_vendor GenuineIntel, msr 61a482206004822
device_attach: est3 attach returned 6
p4tcc3: <CPU Frequency Thermal Control> on cpu3
Code:
# -- sysinstall generated deltas -- # Mon Mar 30 05:44:20 2009
# Created: Mon Mar 30 05:44:20 2009
# Enable network daemons for user convenience.
# Please make all changes to this file, not to /etc/defaults/rc.conf.
# This file now contains just the overrides from /etc/defaults/rc.conf.
defaultrouter="192.168.1.1"
hostname="chris-freebsd1.default.com"
ifconfig_msk0="inet 192.168.1.100  netmask 255.255.255.0"
ifconfig_sk0="inet 192.168.1.100  netmask 255.255.255.0"
ipv6_enable="YES"
saver="green"
blanktime="900"
powerd_enable="YES"
linux_enable="YES"
nfs_client_enable="YES"
sshd_enable="YES"
dbus_enable="YES"
hald_enable="YES"
dumpdev="AUTO"
dumpdir="/var/crash"
Attached Files
File Type: txt dmesg.txt (10.9 KB, 29 views)
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Old 12th April 2009
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Quote:
Originally Posted by Android1 View Post
OS: FreeBSD 7.1-RELEASE-P4/amd64 (currently used) and /i386 (priorly used)
CPU: Intel Core 2 Quad Q9550
Motherboard: ASUS P5Q Deluxe - BIOS revision 2001 (latest)


When the system boots, EIST only initializes for CPU cores 0 and 2. 1 and 3 do not initialize. Powerd is enabled in rc.conf, to no avail.
You need to know that Intel's Core 2 Quad is nothing more then two Core 2 Duo dies put together on one die and connected by a FSB link, so cores 1 and 2 "talk" to eash other thru L2 Cache while cores 1 and 3 "talk" to eash other by FSB bus, its pretty fscked up desing without any smart designs and sollutions, pure brute force, two dual cores thrown together to serve as a quad core, this is because you got only two instead of four Intel SpeedSteps messages.
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Quote:
Originally Posted by vermaden View Post
You need to know that Intel's Core 2 Quad is nothing more then two Core 2 Duo dies put together on one die and connected by a FSB link, so cores 1 and 2 "talk" to eash other thru L2 Cache while cores 1 and 3 "talk" to eash other by FSB bus, its pretty fscked up desing without any smart designs and sollutions, pure brute force, two dual cores thrown together to serve as a quad core, this is because you got only two instead of four Intel SpeedSteps messages.
Ah, yes. The non-monolithic design. I was aware of that, but I never would have thought that it would have anything to do which my situation.

So, are you telling me that I have no issue with EIST? If so, is there a way I can verify that in FBSD?

Last edited by Android1; 12th April 2009 at 09:08 PM. Reason: Improved wording in the last line.
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Old 18th April 2009
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Vermaden, I am not quite sure if I understand what you are saying. Are you saying that I do not have a problem with EIST?
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If frequencies are scaling with powerd, then you do not have a problem.
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Old 18th April 2009
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Quote:
Originally Posted by vermaden View Post
If frequencies are scaling with powerd, then you do not have a problem.
How would one find that out?
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Old 19th April 2009
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Use this for example:
http://www.tumfatig.net/docs/01_os/b...U%20speed.html
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Old 19th April 2009
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Thank you. I will check that out later today and report my findings.
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Old 19th April 2009
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Okay, here is what happened.


On CPU core #0, everything seems great....

Code:
sysctl dev.cpu.0.freq dev.cpu.0.freq_levels
dev.cpu.0.freq: 354
dev.cpu.0.freq_levels: 2833/89000 2478/77875 2124/66750 1770/55625 1416/44500 1062/33375 708/22250 354/11125
....but when I run those commands on cores #1 through #3, I get the following:

Code:
sysctl dev.cpu.1.freq
sysctl: unknown oid dev.cpu.1.freq
sysctl dev.cpu.1.freq_levels
sysctl: unknown oid dev.cpu.1.freq_levels

sysctl dev.cpu.2.freq
sysctl: unknown oid dev.cpu.2.freq
sysctl dev.cpu.2.freq_levels
sysctl: unknown oid dev.cpu.2.freq_levels

sysctl dev.cpu.3.freq
sysctl: unknown oid dev.cpu.3.freq
sysctl dev.cpu.3.freq_levels
sysctl: unknown oid dev.cpu.3.freq_levels

Am I to assume that EIST is only working on the first core, or is there something about sysctl that I am missing?
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From what I recall corectly, powerd/sysctl uses only dev.cpu.0.freq, does other dev.cpu.*.freq even exist in sysctl -a output?
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Old 19th April 2009
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I just ran sysctl -a, and it appears that you are correct. In that case, those instructions that I followed are a tad unclear. When the author says "sysctl's dev.cpu.n.freq (starting at 0)", s/he makes it sound like that the command will work with additional cores.

In any case, it appears that, after reading through and experimenting with the information you have so kindly given me, I have no issue EIST after all. Do you agree with that statement?
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I think that it works ok four you.

From what I recall FreeBSD's SpeedStep implementation sets clock speed for all cores.
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That sounds excellent. Thank you for your time and patience in addressing my concerns.
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You are welcome mate
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acpi, cpufreq, eist, enhanced speedstep, speedstep

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