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LWN.net Weekly Edition for May 23, 2013
An "enum" for Python 3
An unexpected perf feature
LWN.net Weekly Edition for May 16, 2013
A look at the PyPy 2.0 release
That massive filesystem thread
Posted Apr 1, 2009 11:17 UTC (Wed) by masoncl (subscriber, #47138)
Posted Apr 2, 2009 0:37 UTC (Thu) by davecb (subscriber, #1574)
Well, the Unix v6 filesystem implemented
in-order writes, as did 4.x BSD and the
other pre-journaled filesystems. POSIX allows
reordering to make coalesence easy, as
a lot of research was being done at that
time to get better performance.
A colleague at ICL (hi, Ian!) did his
masters at UofT on that, and found you
could get a performance improvement
and still preserve correctness by using
what I'd characterize as tsort(1), which
worked better than BSD/Solaris soft updates.
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