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]
Message-Id: <20080906010214.229910000@intel.com>
Date:	Fri, 05 Sep 2008 18:02:14 -0700
From:	venkatesh.pallipadi@...el.com
To:	mingo@...e.hu, tglx@...utronix.de, hpa@...or.com
Cc:	linux-kernel@...r.kernel.org, shaohua.li@...el.com
Subject: [RFC 0/4] Using HPET in MSI mode and setting up per CPU HPET timers


Patchset that uses HPET timers in MSI mode (when supported) and sets up per
CPU HPET timers. This removes the dependency on IRQ0 timer broadcast with LAPIC
stopping in deep C-state, on platforms that support HPET MSI mode.

On my test system with dual core CPU, the number of timer related interrupts
(HPET_MSI + IRQ0 + LAPIC) comes down from 180 to 95 over a period of 10s,
with these patches.
This is on an idle system with tickless enabled and when system is idle.

Patches against tip.

-- 

--
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/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ