On Mon, 2009-09-14 at 09:25 -0400, Ben Boeckel wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Dave Airlie wrote: <snip> > > [airlied@pegasus ~]$ md5sum lm93_busted.o > > d7174fc439c4678927725d06de4f18a2 lm93_busted.o > > [airlied@pegasus ~]$ xz -z -c lm93_busted.o | md5sum > > 86dbb83fea5f4e2f77396b3f491a0cc1 - > > > > [airlied@ppcg5 ~]$ md5sum lm93_busted.o > > d7174fc439c4678927725d06de4f18a2 lm93_busted.o > > [airlied@ppcg5 ~]$ xz -z -c lm93_busted.o | md5sum > > acf84a6c173b040f6cf8ea96c7daa513 - > > > > > > thats just a random file I had on my machine here, > > first is x86 32-bit, second is ppc. > > xz-4.999.9-0.1.beta.fc12 on both. > > > > Dave. > > When I was playing around with xz after it came out, it detects > the processor and memory available to it and defaults to a > different compression quality based on that. Maybe if the > compression quality and memory usage is set in the command line, > you'd get the same output. > > boeckb@bronto-burt % md5sum eeepc.pdf > efbb35dcb6903fa4a8be91a717ae5c97 eeepc.pdf > boeckb@bronto-burt % xz -c -f eeepc.pdf | md5sum > b7d67d9b8b6a3ac00d9fcfab67ebd93b - > boeckb@bronto-burt % xz -c -f -5 eeepc.pdf | md5sum > 56a269074d015f6d46051a5ecf8d32da - > > [data@cledwyn ~]$ xz -c -f eeepc.pdf | md5sum > 5120f453bf577d58e3e94786e7bc5df1 - > [data@cledwyn ~]$ xz -c -f -5 eeepc.pdf | md5sum > 56a269074d015f6d46051a5ecf8d32da - > > bronto-burt 3.0GHz x86_64 4GB RAM > cledwyn 667MHz i686 192MB RAM > > xz-4.999.8-0.8.beta.20090817git.fc11 for both > > - --Ben Dave, if you're still around, do you mind running a check on both your machines using "xz -c -z -7"? IIRC, we do force the compression level in both rpm and deltarpm to be 7. Thanks, Jonathan
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