linux-ext4 - [Bug 71641] Unreasonable performance degradation in ext4 with full data journaling

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Message-ID: <bug-71641-13602-gpFTFnckuy@https.bugzilla.kernel.org/>
Date:	Fri, 28 Mar 2014 10:55:10 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 71641] Unreasonable performance degradation in ext4 with full
 data journaling

https://bugzilla.kernel.org/show_bug.cgi?id=71641

--- Comment #10 from Chia-Hung Chang <fredchang.tc@...il.com> ---
BTW, if we use 1G ramdisk as journal area, the performance with JBD2_NR_batch
=2048 can be 571MB/s

Please download the result of blktrace as following,
https://dl.dropboxusercontent.com/u/32959539/JBD2_NR_batch_2048_1M.7z

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