From: Pavel Machek <pavel@suse.cz>
To: Tony Lindgren <tony@atomide.com>
Cc: George Anzinger <george@mvista.com>,
john stultz <johnstul@us.ibm.com>,
Andrea Arcangeli <andrea@suse.de>,
Zwane Mwaikambo <zwane@arm.linux.org.uk>,
Con Kolivas <kernel@kolivas.org>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dynamic tick patch
Date: Wed, 19 Jan 2005 12:36:43 +0100 [thread overview]
Message-ID: <20050119113642.GA1358@elf.ucw.cz> (raw)
In-Reply-To: <20050119000556.GB14749@atomide.com>
Hi!
> As this patch is related to the VST/High-Res timers, there
> are probably various things that can be merged. I have not
> yet looked at what all could be merged.
>
> I'd appreciate some comments and testing!
Good news is that it does seem to reduce number of interrupts. Bad
news is that time now runs faster (like "sleep 10" finishes in ~5
seconds) and that I could not measure any difference in power
consumption.
Pavel
root@amd:~# date; cat /proc/interrupts ; sleep 10; date; cat
/proc/interrupts
Wed Jan 19 12:30:46 CET 2005
CPU0
0: 18136 IO-APIC-edge timer
1: 557 IO-APIC-edge i8042
10: 148 IO-APIC-level acpi
12: 69 IO-APIC-edge i8042
14: 1587 IO-APIC-edge ide0
15: 14 IO-APIC-edge ide1
17: 1 IO-APIC-level yenta
19: 2 IO-APIC-level ohci1394
21: 0 IO-APIC-level ehci_hcd, uhci_hcd, uhci_hcd, uhci_hcd
22: 0 IO-APIC-level VIA8233
23: 0 IO-APIC-level eth0
NMI: 0
LOC: 20924
ERR: 0
MIS: 0
Wed Jan 19 12:30:56 CET 2005
CPU0
0: 18253 IO-APIC-edge timer
1: 558 IO-APIC-edge i8042
10: 148 IO-APIC-level acpi
12: 69 IO-APIC-edge i8042
14: 1587 IO-APIC-edge ide0
15: 14 IO-APIC-edge ide1
17: 1 IO-APIC-level yenta
19: 2 IO-APIC-level ohci1394
21: 0 IO-APIC-level ehci_hcd, uhci_hcd, uhci_hcd, uhci_hcd
22: 0 IO-APIC-level VIA8233
23: 0 IO-APIC-level eth0
NMI: 0
LOC: 21062
ERR: 0
MIS: 0
root@amd:~#
(But it really took somewhere around 5 seconds).
Pavel
--
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!
next prev parent reply other threads:[~2005-01-19 11:32 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-19 0:05 [PATCH] dynamic tick patch Tony Lindgren
2005-01-19 0:22 ` Lee Revell
2005-01-19 1:04 ` Tony Lindgren
2005-01-19 4:21 ` Benjamin Herrenschmidt
2005-01-19 5:07 ` Tony Lindgren
2005-01-19 5:21 ` Tony Lindgren
2005-01-19 5:44 ` Benjamin Herrenschmidt
2005-01-19 6:26 ` Tony Lindgren
2005-01-19 9:45 ` Pavel Machek
2005-01-19 5:28 ` Benjamin Herrenschmidt
2005-01-19 6:37 ` Tony Lindgren
2005-01-19 7:08 ` Benjamin Herrenschmidt
2005-01-19 7:31 ` Tony Lindgren
2005-01-19 14:11 ` Stephen Frost
2005-01-19 17:17 ` Tony Lindgren
[not found] ` <OFDC470564.D4624EB3-ON41256F8E.00512848-41256F8E.005428CC@de.ibm.com>
2005-01-19 17:37 ` Tony Lindgren
2005-01-19 9:43 ` Pavel Machek
2005-01-19 17:13 ` Tony Lindgren
2005-01-19 17:48 ` Andrea Arcangeli
2005-01-19 18:19 ` Tony Lindgren
2005-01-19 19:12 ` Andrea Arcangeli
2005-01-19 19:17 ` Tony Lindgren
2005-01-19 19:34 ` Tony Lindgren
2005-01-19 22:42 ` Andrea Arcangeli
2005-01-19 22:59 ` George Anzinger
2005-01-19 23:17 ` Tony Lindgren
2005-01-20 0:24 ` George Anzinger
2005-01-20 8:04 ` Tony Lindgren
2005-01-20 23:10 ` George Anzinger
2005-01-21 17:35 ` Tony Lindgren
2005-01-21 20:23 ` George Anzinger
2005-01-19 23:26 ` Thomas Gleixner
2005-01-19 23:45 ` john stultz
2005-01-20 5:56 ` Thomas Gleixner
2005-01-20 0:39 ` George Anzinger
2005-01-20 3:15 ` Valdis.Kletnieks
2005-01-19 11:36 ` Pavel Machek [this message]
2005-01-19 17:11 ` Tony Lindgren
2005-01-19 17:30 ` Arjan van de Ven
2005-01-19 17:41 ` Tony Lindgren
2005-01-19 22:06 ` Pavel Machek
2005-01-19 23:08 ` Tony Lindgren
2005-01-19 23:46 ` Pavel Machek
2005-01-19 23:53 ` Tony Lindgren
2005-01-19 23:59 ` Pavel Machek
2005-01-20 0:07 ` Tony Lindgren
2005-01-20 0:44 ` Pavel Machek
2005-01-20 0:54 ` Pavel Machek
2005-01-20 7:39 ` Tony Lindgren
2005-01-19 22:20 ` Pavel Machek
2005-01-20 4:02 ` Zwane Mwaikambo
2005-01-21 17:48 ` Tony Lindgren
2005-01-21 18:27 ` Zwane Mwaikambo
2005-01-21 18:38 ` Tony Lindgren
2005-01-21 18:54 ` Pavel Machek
2005-01-21 21:23 ` Zwane Mwaikambo
2005-01-21 21:29 ` Pavel Machek
2005-01-21 20:25 ` George Anzinger
2005-01-21 21:38 ` Zwane Mwaikambo
2005-01-22 7:24 ` George Anzinger
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20050119113642.GA1358@elf.ucw.cz \
--to=pavel@suse.cz \
--cc=andrea@suse.de \
--cc=george@mvista.com \
--cc=johnstul@us.ibm.com \
--cc=kernel@kolivas.org \
--cc=linux-kernel@vger.kernel.org \
--cc=schwidefsky@de.ibm.com \
--cc=tony@atomide.com \
--cc=zwane@arm.linux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.