From: Jim Farrand <jim@farrand.net>
To: Xavier Leroy <xavier.leroy@inria.fr>
Cc: David McClain <dmcclain1@mindspring.com>, caml-list@inria.fr
Subject: Re: [Caml-list] FP's and HyperThreading Processors
Date: Fri, 13 Jun 2003 22:33:54 +0100 [thread overview]
Message-ID: <20030613213354.GG14726@farrand.net> (raw)
In-Reply-To: <20030613210751.A2264@pauillac.inria.fr>
On Fri, Jun 13, 2003 at 09:07:51PM +0200, Xavier Leroy wrote:
> How do you measure "CPU utilization"? Different tools have different
> notions of CPU utilization. For instance, OS-level tools such as
> "top", "ps" or "uptime" treat the time spent by the CPU while stalled
> by cache misses and the like as user CPU time, not as idle time.
> Only processor-level performance monitor counters can distinguish
> between active cycles and stalled cycles.
Isn't the point of hyperthreading that the CPU doesn't stall on cache
misses, but instead is able to run another process? Or am I
misunderstanding the point of hyperthreading?
--
Jim Farrand
--
-------------------
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
next prev parent reply other threads:[~2003-06-13 21:33 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-13 6:44 David McClain
2003-06-13 8:06 ` John Max Skaller
2003-06-13 10:03 ` [Caml-list] Type safe affectation ? Christophe Raffalli
2003-06-14 13:35 ` Xavier Leroy
2003-06-15 18:53 ` brogoff
2003-06-15 19:49 ` Brian Hurt
2003-06-16 1:38 ` Jacques Garrigue
2003-06-13 18:38 ` [Caml-list] FP's and HyperThreading Processors Kip Macy
2003-06-13 21:23 ` David McClain
2003-06-13 21:39 ` Kip Macy
2003-06-13 21:56 ` David McClain
2003-06-14 22:08 ` John Max Skaller
2003-06-14 6:11 ` Ville-Pertti Keinonen
2003-06-13 19:07 ` Xavier Leroy
2003-06-13 21:33 ` Jim Farrand [this message]
2003-06-13 21:39 ` David McClain
2003-07-02 10:26 ` David Monniaux
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=20030613213354.GG14726@farrand.net \
--to=jim@farrand.net \
--cc=caml-list@inria.fr \
--cc=dmcclain1@mindspring.com \
--cc=xavier.leroy@inria.fr \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox