From: Peter Zaitsev <pz@spylog.ru>
To: Brian Gerst <bgerst@didntduck.org>
Cc: Linux Kernel List <linux-kernel@vger.kernel.org>
Subject: Re[2]: 3.5G user space speed
Date: Wed, 16 Jan 2002 00:49:10 +0300 [thread overview]
Message-ID: <12051384657.20020116004910@spylog.ru> (raw)
In-Reply-To: <3C44A224.120712C1@didntduck.org>
In-Reply-To: <16247691406.20020115234737@spylog.ru> <3C4499A3.781E5A85@didntduck.org> <15850171252.20020116002857@spylog.ru> <3C44A224.120712C1@didntduck.org>
Hello Brian,
Wednesday, January 16, 2002, 12:41:56 AM, you wrote:
>>
>> Well. May be you can tell about the numbers a bit ? I can chose 3.0G
>> for user instead of 3.5G for user with not really huge loss, but I'd
>> like to know how much it will increase speed and in which cases, also
>> about standard 2/2 mode.
BG> I don't have quantifiable numbers available, but the speed issue will be
BG> a result of the kernel running out of direct-mapped memory and having to
BG> start swapping even though there is free memory in the system (in the
BG> highmem zone). The best thing you can do is try both and find what
BG> works best for you.
So how this should appear ? Like real swapping or like increased
system CPU usage because of moving pages to/from zone.
--
Best regards,
Peter mailto:pz@spylog.ru
next prev parent reply other threads:[~2002-01-15 21:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-15 20:47 Peter Zaitsev
2002-01-15 21:05 ` Brian Gerst
2002-01-15 21:28 ` Re[2]: " Peter Zaitsev
2002-01-15 21:41 ` Brian Gerst
2002-01-15 21:49 ` Peter Zaitsev [this message]
2002-01-15 22:09 ` H. Peter Anvin
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=12051384657.20020116004910@spylog.ru \
--to=pz@spylog.ru \
--cc=bgerst@didntduck.org \
--cc=linux-kernel@vger.kernel.org \
/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®