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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
Compression formats for kernel.org
Posted Feb 18, 2010 17:42 UTC (Thu) by intgr (subscriber, #39733)
Just for some rough figures, I'm decompressing the Linux kernel 2.6.32 source tarball, on my quad-core Phenom II system:
pbzcat, four threads, takes 4.1 seconds of wall-clock time (15.6s CPU time).
xzcat, single thread, takes just 4.7 seconds.
zcat, single thread, takes 2.3 seconds
So, parallel bzip2 decompression will probably beat gzip at 8 cores, whereas XZ would be on par with just 2 cores. While XZ is slow at compression, it will definitely beat gzip and bzip2 in parallel decompression.
Posted Feb 23, 2010 6:23 UTC (Tue) by SEJeff (subscriber, #51588)
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