From: Zlatko Calusic <zlatko.calusic@iskon.hr>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Marcelo Tosatti <marcelo@conectiva.com.br>, <linux-mm@kvack.org>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: xmm2 - monitor Linux MM active/inactive lists graphically
Date: 26 Oct 2001 12:08:46 +0200 [thread overview]
Message-ID: <dnr8rqu30x.fsf@magla.zg.iskon.hr> (raw)
In-Reply-To: <Pine.LNX.4.31.0110250920270.2184-100000@cesium.transmeta.com>
In-Reply-To: <Pine.LNX.4.31.0110250920270.2184-100000@cesium.transmeta.com> (Linus Torvalds's message of "Thu, 25 Oct 2001 09:31:12 -0700 (PDT)")
Linus Torvalds <torvalds@transmeta.com> writes:
> On 25 Oct 2001, Zlatko Calusic wrote:
> >
> > Yes, I definitely have DMA turned ON. All parameters are OK. :)
>
> I suspect it may just be that "queue_nr_requests"/"batch_count" is
> different in -ac: what happens if you tweak them to the same values?
>
Next test:
block: 1024 slots per queue, batch=341
Wrote 600.00 MB in 71 seconds -> 8.39 MB/s (7.5 %CPU)
Still very spiky, and during the write disk is uncapable of doing any
reads. IOW, no serious application can be started before writing has
finished. Shouldn't we favour reads over writes? Or is it just that
the elevator is not doing its job right, so reads suffer?
procs memory swap io system cpu
r b w swpd free buff cache si so bi bo in cs us sy id
0 1 1 0 3600 424 453416 0 0 0 0 190 510 2 1 97
0 1 1 0 3596 424 453416 0 0 0 40468 189 508 2 2 96
0 1 1 0 3592 424 453416 0 0 0 0 189 541 1 0 99
0 1 1 0 3592 424 453416 0 0 0 0 190 513 1 0 99
1 1 1 0 3592 424 453416 0 0 0 0 192 511 0 1 99
0 1 1 0 3596 424 453416 0 0 0 0 188 528 0 0 100
0 1 1 0 3592 424 453416 0 0 0 0 188 510 1 0 99
0 1 1 0 3592 424 453416 0 0 0 41444 195 507 0 2 98
0 1 1 0 3592 424 453416 0 0 0 0 190 514 1 1 98
1 1 1 0 3588 424 453416 0 0 0 0 192 554 0 2 98
0 1 1 0 3584 424 453416 0 0 0 0 191 506 0 1 99
0 1 1 0 3584 424 453416 0 0 0 0 186 514 0 0 100
0 1 1 0 3584 424 453416 0 0 0 0 186 515 0 0 100
1 1 1 0 3576 424 453416 0 0 0 0 434 1493 3 2 95
1 1 1 0 3564 424 453416 0 0 0 40560 301 936 3 1 96
0 1 1 0 3564 424 453416 0 0 0 0 338 1050 1 2 97
0 1 1 0 3560 424 453416 0 0 0 0 286 893 1 2 97
--
Zlatko
next prev parent reply other threads:[~2001-10-26 10:08 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-24 10:42 Zlatko Calusic
2001-10-24 14:26 ` Marcelo Tosatti
2001-10-25 0:25 ` Zlatko Calusic
2001-10-25 1:50 ` Simon Kirby
2001-10-25 4:19 ` Linus Torvalds
2001-10-25 4:57 ` Linus Torvalds
2001-10-25 12:48 ` Zlatko Calusic
2001-10-25 16:31 ` Linus Torvalds
2001-10-25 17:33 ` Jens Axboe
2001-10-26 9:45 ` Zlatko Calusic
2001-10-26 10:08 ` Zlatko Calusic [this message]
2001-10-26 14:39 ` Jens Axboe
2001-10-26 14:57 ` Zlatko Calusic
2001-10-26 15:01 ` Jens Axboe
2001-10-26 16:04 ` Linus Torvalds
2001-10-26 16:57 ` Linus Torvalds
2001-10-26 17:19 ` Linus Torvalds
2001-10-28 17:30 ` Zlatko Calusic
2001-10-28 17:34 ` Linus Torvalds
2001-10-28 17:48 ` Alan Cox
2001-10-28 17:59 ` Linus Torvalds
2001-10-28 18:22 ` Alan Cox
2001-10-28 18:46 ` Linus Torvalds
2001-10-28 19:29 ` Alan Cox
2001-10-28 22:04 ` Linus Torvalds
2001-10-28 18:56 ` Andrew Morton
2001-10-30 8:56 ` Jens Axboe
2001-10-30 9:26 ` Zlatko Calusic
2001-10-30 19:07 ` Josh McKinney
2001-10-28 19:13 ` Barry K. Nathan
2001-10-28 21:42 ` Jonathan Morton
2001-11-02 5:52 ` Zlatko's I/O slowdown status Andrea Arcangeli
2001-11-02 20:14 ` Zlatko Calusic
2001-11-02 20:16 ` Jeffrey W. Baker
2001-11-02 20:36 ` John Alvord
2001-11-02 21:16 ` Zlatko Calusic
2001-11-02 20:57 ` Andrea Arcangeli
2001-11-02 23:23 ` Simon Kirby
2001-11-02 23:37 ` Miquel van Smoorenburg
2001-10-27 13:14 ` xmm2 - monitor Linux MM active/inactive lists graphically Giuliano Pochini
2001-10-28 5:05 ` Mike Fedyk
2001-10-25 9:07 ` Zlatko Calusic
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=dnr8rqu30x.fsf@magla.zg.iskon.hr \
--to=zlatko.calusic@iskon.hr \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=marcelo@conectiva.com.br \
--cc=torvalds@transmeta.com \
/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
all inboxes | Powered by JetHome®