Re: Linux 2.6.29

[Alan Cox]

> The fsync() problem is really annoying, but what is doubly annoying is 
> that sometimes one process doing fsync() (or sync) seems to cause other 
> processes to hickup too. 

Bug #5942 (interaction with anticipatory io scheduler)
Bug #9546 (with reproducer & logs)
Bug #9911 including a rather natty tester (albeit in java)
Bug #7372 (some info and figures on certain revs it seemed to get worse)
Bug #12309 (more info, including kjournald hack fix using ioprio)

General consensus seems to be 2.6.18 is where the manure intersected with
the air impeller
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