Re: RAID 5,6 sequential writing seems slower in newer kernels
From: Roman Mamedov <hidden>
Date: 2015-12-02 05:22:37
On Tue, 1 Dec 2015 17:02:27 -0600 Dallas Clement [off-list ref] wrote:
I am frankly surprised at these results. Perhaps there is some configuration or tunable settings that have changed since the 2.6 kernel that I am unaware of that affect RAID 5, 6 performance. Please comment if you have any ideas which might explain what I am seeing.
Do you use a write intent bitmap (internal?), what is your bitmap chunk size? What is your stripe_cache_size set to? -- With respect, Roman
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