From 0f1d44754135fbb0145ddedf66ed1fd3710459f6 Mon Sep 17 00:00:00 2001 From: Con Kolivas Date: Tue, 22 Feb 2011 20:26:55 +1100 Subject: [PATCH] Update benchmarks. --- doc/README.benchmarks | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/doc/README.benchmarks b/doc/README.benchmarks index 8e2eeac..9de1b12 100644 --- a/doc/README.benchmarks +++ b/doc/README.benchmarks @@ -94,7 +94,7 @@ system and some basic working software on it. The default options on the 10GB Virtual image: -These benchmarks were done on the quad core with version 0.550 +These benchmarks were done on the quad core with version 0.561 Compression Size Percentage Compress Time Decompress Time None 10737418240 100.0 @@ -102,11 +102,11 @@ gzip 2772899756 25.8 05m47s 2m46s bzip2 2704781700 25.2 16m15s 6m19s xz 2272322208 21.2 50m58s 3m52s 7z 2242897134 20.9 26m36s 5m41s -lrzip 1372218189 12.8 11m03s 3m43s -lrzip -M 1079682231 10.2 09m30s 3m02s -lrzip -l 1831906483 17.1 05m38s 3m05s -lrzip -lM 1414958844 13.2 05m24s 2m52s -lrzip -zM 1066902006 9.9 71m20s 72m0s +lrzip 1372218189 12.8 10m23s 2m53s +lrzip -U 1095735108 10.2 08m44s 2m45s +lrzip -l 1831894161 17.1 04m53s 2m37s +lrzip -lU 1414959433 13.2 04m48s 2m38s +lrzip -zU 1067075961 9.9 69m36s 69m35s At this end of the spectrum things really start to heat up. The compression @@ -118,9 +118,10 @@ less than half the size. What appears to be a big disappointment is actually zpaq here which takes more than 6 times longer than lzma for a measly .3% improvement. The reason is that most of the advantage here is achieved by the rzip first stage since there's a -lot of redundant space over huge distances on a virtual image. The -M option +lot of redundant space over huge distances on a virtual image. The -U option which works the memory subsystem rather hard making noticeable impact on the -rest of the machine also does further wonders for the compression and times. +rest of the machine also does further wonders for the compression (virtually +always) and even the times in this particular case. This should help govern what compression you choose. Small files are nicely compressed with zpaq. Intermediate files are nicely compressed with lzma. @@ -130,4 +131,4 @@ Or, to make things easier, just use the default settings all the time and be happy as lzma gives good results. :D Con Kolivas -Tue, 16th Nov 2010 +Tue, 22 Feb 2011