linux-kernel - APIC frequency too slow on HP dv5z

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 30 Sep 2008 12:55:47 -0700
From:	Howard Chu <hyc@...as.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: APIC frequency too slow on HP dv5z

More often than not, on a warm boot I see something like this

msg.new:[    1.940031] Using local APIC timer interrupts.
msg.new:[    1.944031] APIC timer calibration result 466046
msg.new:[    1.944031] Detected 0.466 MHz APIC timer.
msg.new:[    1.944031] APIC frequency too slow, disabling apic timer

On cold boots it may see 12.5MHz, or may not...

[    2.000584] Using local APIC timer interrupts.
[    2.004067] APIC timer calibration result 12500236
[    2.004080] Detected 12.500 MHz APIC timer.

I haven't figured out yet what the pattern is behind the behavior. Has anyone 
else seen this kind of problem before?
-- 
   -- Howard Chu
   CTO, Symas Corp.           http://www.symas.com
   Director, Highland Sun     http://highlandsun.com/hyc/
   Chief Architect, OpenLDAP  http://www.openldap.org/project/
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/