From: "Jörn Engel" <joern@logfs.org>
To: Alexey Korolev <akorolev@infradead.org>
Cc: dwmw2@infradead.org, tglx@linutronix.de,
linux-mtd@lists.infradead.org, vasiliy.leonenko@gmail.com
Subject: Re: [RFC/PATCH 2/3] NAND multiple plane feature
Date: Thu, 5 Jun 2008 23:09:29 +0200 [thread overview]
Message-ID: <20080605210929.GB19234@logfs.org> (raw)
In-Reply-To: <alpine.LFD.1.10.0806031754030.32134@pentafluge.infradead.org>
On Tue, 3 June 2008 17:57:35 +0100, Alexey Korolev wrote:
>
> We did some performance testing for this feature: we did not find a test
> case where JFFS2 on NAND with dual-plane has lower performance than
> JFFS2 on NAND without dual-plane features. (note: subpage read feature
> was enabled for both cases)
Maybe I have a testcase for you. The "evil workload".
1. Write a file until you get -ENOSPC.
2. Replace 1000 page-sized page-aligned blocks at random offsets.
The time for 2 should roughly double with bigger eraseblocks.
[ And yes, I originally got this testcase from you. ;) ]
Jörn
--
Time? What's that? Time is only worth what you do with it.
-- Theo de Raadt
next prev parent reply other threads:[~2008-06-05 21:09 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-28 13:08 [RFC/PATCH 2/3] NAND multiple plane feature Alexey Korolev
2008-06-01 17:48 ` Jörn Engel
2008-06-02 11:28 ` Jamie Lokier
2008-06-02 11:36 ` Jörn Engel
2008-06-03 16:57 ` Alexey Korolev
2008-06-03 17:20 ` Jörn Engel
2008-06-05 21:09 ` Jörn Engel [this message]
2008-06-06 14:01 ` Alexey Korolev
2008-06-06 16:22 ` Jörn Engel
2008-06-03 17:42 ` Jörn Engel
2008-06-05 16:58 ` Alexey Korolev
2008-06-05 18:58 ` Jörn Engel
2008-06-05 19:13 ` Thomas Gleixner
2008-06-06 10:08 ` Alexey Korolev
2008-06-06 12:16 ` Thomas Gleixner
2008-06-06 13:47 ` Alexey Korolev
2008-06-06 14:19 ` Thomas Gleixner
2008-06-06 14:36 ` Alexey Korolev
2008-06-05 20:03 ` Thomas Gleixner
2008-06-10 17:33 ` Alexey Korolev
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=20080605210929.GB19234@logfs.org \
--to=joern@logfs.org \
--cc=akorolev@infradead.org \
--cc=dwmw2@infradead.org \
--cc=linux-mtd@lists.infradead.org \
--cc=tglx@linutronix.de \
--cc=vasiliy.leonenko@gmail.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