Am 16.02.2010 12:03, schrieb Jan de Groot: > Did some testing with openoffice-base 3.2.0-1-x86_64.tar: > compression speed: > gzip: 0m28.945s > bzip2: 1m21.876s > xz -1: 0m49.244s > xz -2: 1m18.444s > xz -3: 3m34.208s > xz -6: 4m41.148s > > decompression speed: > gzip: 0m 5.772s > bzip2: 0m29.433s > xz -1: 0m13.983s > xz -2: 0m12.949s > xz -3: 0m12.706s > sz -6: 0m11.462s > > size: > tar: 370728960 > gzip: 173262975 > bzip2: 165765469 > xz -1: 157099460 > xz -2: 150147496 > xz -3: 142961984 > xz -6: 129979708 > > For decompression, it doesn't matter so much which xz level you choose. > For compression, anything beyond -2 is painfully slow. These times are > measured on a Core2Duo E4500 by compressing the single tar file. Note > that -6 saves a whopping 20MB over compressing with -2, but whatever we > choose is always better than gzip or bzip2.
We should measure the resident memory usage during decompression because IIRC that is a problem.
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