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List:       kde-bugs-dist
Subject:    [Baloo] [Bug 333655] Baloo indexing I/O introduces serious noticable delays
From:       Martin Steigerwald <Martin () Lichtvoll ! de>
Date:       2014-05-15 14:52:21
Message-ID: bug-333655-17878-4svmkB6dhl () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=333655

--- Comment #52 from Martin Steigerwald <Martin@Lichtvoll.de> ---
(In reply to comment #50)
[…]
> On a related note, I ran baloo_file_extractor on a 20 MB pdf while moving
> files between partitions - it normally takes less than 10 s to run, with
> that disk activity going on it took 500 s, so idle io class really works.

Idle I/O class works if the following conditions are met:
- CFQ I/O scheduler (CFQ v3 time sliced), so it won ´t work on Ubuntu by default
as it uses deadline AFAIK.
- On read access and direct write accesses.

It does *not* work on buffered writes. Thus I think while it may help with read
accesses it does not help with the excessive writes, as I think baloo_file
indexer uses buffered writes (through page cache).

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