From: Dale <rdalek1967@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Re: aligning SSD partitions
Date: Thu, 06 Sep 2012 07:48:59 -0500 [thread overview]
Message-ID: <50489BBB.5090702@gmail.com> (raw)
In-Reply-To: <20120906131754.6d9fbcb1@digimed.co.uk>
Neil Bothwick wrote:
> On Thu, 06 Sep 2012 06:31:24 -0500, Dale wrote:
>
>> Not quite. The theory is that if you put portages work directory on
>> tmpfs, then all the writes and such are done in ram which is faster. If
>> you have portages work directory on disk, it will be slower because the
>> disk is slower.
> But the disk is not used when you have enough RAM to keep everything
> cached. So you are comparing the speed of storing all files in RAM with
> the speed of storing all files in RAM, so it is hardly surprising that
> the two tests give similar results.
>
> The fact that in one scenario the files do end up on disk is irrelevant,
> you are working from RAM copies of the files in both instances.
>
> By running the test on a lightly loaded machine, you are also removing
> the possibility of files being flushed from the cache in the
> tmpdir-on-disk setup, so I would expect you to get comparable results
> either way.
>
> The only real benefit of using tmpfs is the one you mentioned elsewhere,
> that the disks don't get bothered at all.
>
>
I don't think that is correct. I am clearing the files in ram. That's
the point of drop_caches is to clear the kernels cache files. See post
to Nicolas Sebrecht a bit ago.
Dale
:-) :-)
--
I am only responsible for what I said ... Not for what you understood or how you interpreted my words!
next prev parent reply other threads:[~2012-09-06 12:52 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-04 7:20 [gentoo-user] aligning SSD partitions Philip Webb
2012-09-04 7:47 ` Neil Bothwick
2012-09-04 20:31 ` Volker Armin Hemmann
2012-09-04 20:58 ` Neil Bothwick
2012-09-04 21:00 ` Neil Bothwick
2012-09-04 21:52 ` Peter Humphrey
2012-09-05 0:42 ` Philip Webb
2012-09-05 8:23 ` Neil Bothwick
2012-09-05 9:02 ` Philip Webb
2012-09-05 9:23 ` Peter Humphrey
2012-09-05 11:07 ` Dale
2012-09-05 11:25 ` Peter Humphrey
2012-09-05 12:02 ` Dale
2012-09-05 12:58 ` Peter Humphrey
2012-09-05 18:02 ` Dale
2012-09-05 19:01 ` Paul Hartman
2012-09-05 20:46 ` Dale
2012-09-05 21:22 ` Paul Hartman
2012-09-05 22:36 ` Peter Humphrey
2012-09-05 12:31 ` Neil Bothwick
2012-09-05 12:52 ` Dale
2012-09-05 15:17 ` Neil Bothwick
2012-09-05 15:23 ` Michael Mol
2012-09-05 17:54 ` Dale
2012-09-05 23:42 ` Neil Bothwick
2012-09-06 9:13 ` Dale
2012-09-06 6:57 ` [gentoo-user] " Nicolas Sebrecht
2012-09-06 9:15 ` Dale
2012-09-06 9:47 ` Neil Bothwick
2012-09-06 10:03 ` Dale
2012-09-06 10:18 ` Neil Bothwick
2012-09-06 10:56 ` Dale
2012-09-06 10:41 ` Nicolas Sebrecht
2012-09-06 11:03 ` Dale
2012-09-06 11:37 ` Nicolas Sebrecht
2012-09-06 12:21 ` Dale
2012-09-06 13:27 ` Nicolas Sebrecht
2012-09-06 14:27 ` Dale
2012-09-06 10:11 ` Dale
2012-09-06 10:20 ` Neil Bothwick
2012-09-06 10:44 ` Dale
2012-09-06 11:11 ` Nicolas Sebrecht
2012-09-06 11:31 ` Dale
2012-09-06 12:17 ` Neil Bothwick
2012-09-06 12:44 ` Nicolas Sebrecht
2012-09-06 12:48 ` Dale [this message]
2012-09-06 13:04 ` Neil Bothwick
2012-09-06 14:07 ` Dale
2012-09-06 14:26 ` Michael Mol
2012-09-06 16:27 ` Dale
2012-09-07 7:56 ` Nicolas Sebrecht
2012-09-07 9:15 ` Nicolas Sebrecht
2012-09-07 12:25 ` Dale
2012-09-07 19:48 ` Neil Bothwick
2012-09-06 14:37 ` Neil Bothwick
2012-09-06 16:32 ` Dale
2012-09-06 20:21 ` Neil Bothwick
2012-09-06 14:51 ` Nicolas Sebrecht
2012-09-06 16:49 ` Dale
2012-09-06 13:46 ` Nicolas Sebrecht
2012-09-06 14:20 ` Dale
2012-09-06 14:33 ` Michael Mol
2012-09-06 16:39 ` Dale
2012-09-06 16:00 ` Paul Hartman
2012-09-06 16:44 ` Dale
2012-09-06 20:21 ` Neil Bothwick
2012-09-06 21:09 ` Dale
2012-09-06 22:38 ` Neil Bothwick
2012-09-06 23:08 ` Dale
2012-09-07 7:47 ` Nicolas Sebrecht
2012-09-07 12:35 ` Dale
2012-09-10 10:32 ` Nicolas Sebrecht
2012-09-10 11:13 ` Dale
2012-09-10 12:37 ` Michael Mol
2012-09-10 13:52 ` Dale
2012-09-10 14:02 ` Michael Mol
2012-09-10 14:22 ` Dale
2012-09-05 12:55 ` [gentoo-user] " Adam Carter
2012-09-05 15:28 ` Florian Philipp
2012-09-05 9:26 ` Neil Bothwick
2012-09-05 16:30 ` Volker Armin Hemmann
2012-09-05 17:02 ` Neil Bothwick
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=50489BBB.5090702@gmail.com \
--to=rdalek1967@gmail.com \
--cc=gentoo-user@lists.gentoo.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