Op 12 jul. 2012, om 21:22 heeft Saul Wold het volgende geschreven: > On 07/12/2012 11:58 AM, Koen Kooi wrote: >> Any volunteers to test this on a system with >4 real cores? >> > > Koen, > > Does OE-Core or Poky have an image setup for using .xz by default?
No, and as you can see from Andrei's patches, it would have never worked :) regards, Koen > > I will run it on a machine I have, just want to make sure I am doing the same > tests that Andrei is running. > > I was about to ask what msm asked about the Memory info. > > > Sau! > >> Op 12 jul. 2012, om 20:13 heeft Andrei Gherzan het volgende geschreven: >> >>> Koen suggested to add -T to xz commands. We have this option implemented in >>> our current version .1alpha. >>> >>> -T threads, --threads=threads >>> Specify the number of worker threads to use. Setting threads >>> to >>> a special value 0 makes xz use as many threads as there are >>> CPU >>> cores on the system. The actual number of threads can be >>> less >>> than threads if the input file is not big enough for >>> threading >>> with the given settings or if using more threads would >>> exceed >>> the memory usage limit. >>> >>> ------------------- >>> >>> Memory: 7.8 GiB >>> Processor:: Intel® Core™ i5-2540M CPU @ 2.60GHz × 4 >>> >>> File to compress: 1.9G >>> >>> xz -f -k -e -9 --check=crc32 (current configuration) >>> Memory: 673Mb >>> real 6m37.170s >>> user 6m35.389s >>> sys 0m0.884s >>> Compressed file size: 3.4Mb >>> >>> xz -f -k -e -9 -T 4 --check=crc32 >>> Memory: Cannot allocate memory >>> >>> xz -f -k -e -8 -T 4 --check=crc32 >>> Memory: 1.8G >>> real 3m24.462s >>> user 12m8.502s >>> sys 0m2.180s >>> Compressed file size: 3.4Mb >>> >>> xz -f -k -T 4 --check=crc32 (-e defaults to -6) >>> Memory: 471Mb >>> real 1m9.265s >>> user 4m8.972s >>> sys 0m0.944s >>> Compressed file size: 3.4Mb >>> >>> So my conclusion would be to use the default -e -6 with -T 0. >>> >>> The following changes since commit 90ad663909c0c8a405b22a510c9f957007d02669: >>> >>> upstream_tracking: update boost (2012-07-09 17:21:38 +0100) >>> >>> are available in the git repository at: >>> >>> git://git.yoctoproject.org/poky-contrib ag/xz >>> http://git.yoctoproject.org/cgit.cgi/poky-contrib/log/?h=ag/xz >>> >>> Andrei Gherzan (3): >>> image_types.bbclass: Fix COMPRESS_CMD for xz to redirect compressed >>> data to file >>> image_types.bbclass: Add XZ variable to set number of threads to be >>> used while compressing >>> image_types.bbclass: Default XZ_COMPRESSION_LEVEL to -e -6 >>> >>> meta/classes/image_types.bbclass | 5 +++-- >>> 1 file changed, 3 insertions(+), 2 deletions(-) >>> >>> -- >>> 1.7.9.5 >>> >> >> >> _______________________________________________ >> Openembedded-core mailing list >> Openembedded-core@lists.openembedded.org >> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core >> >> > _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-core
