Re: multi threaded support for xz

2016-10-08 Thread Sebastian Andrzej Siewior
On 2016-10-07 18:27:05 [+0200], Sven Joachim wrote: > That's because `xz -T1', unlike dpkg, does not use > lzma_stream_encoder_mt() but rather lzma_stream_encoder(). For testing > purposes, I set the number of threads in dpkg to 1: argh. correct. Sorry for the confusion. > Cheers, >Sven

Re: multi threaded support for xz

2016-10-07 Thread Sven Joachim
On 2016-10-07 13:17 +0200, Sebastian Andrzej Siewior wrote: > On 2016-10-06 23:47:05 [+0200], Guillem Jover wrote: > >> On Thu, 2016-10-06 at 08:30:53 +0200, Sebastian Andrzej Siewior wrote: >> > With one CPU you have one block. With multiple CPUs the default block >> > size (as of current xz) is

Re: multi threaded support for xz

2016-10-07 Thread Sebastian Andrzej Siewior
On 2016-10-06 23:47:05 [+0200], Guillem Jover wrote: > Hi! Hi, > Please do not request any binNMU, I'm planning on doing a release > soon, but before that I'll be investigating the effects of the new > xz-utils package. didn't plan on my own. Okay, please let me know it seems it did not build on

Re: multi threaded support for xz

2016-10-06 Thread Guillem Jover
Hi! On Wed, 2016-10-05 at 22:00:26 +0200, Sebastian Andrzej Siewior wrote: > xz-utils 5.2.2 with threading support for the compressor is currently > in the deferred queue for another 24 hours [0]. > Once this version has been built a binNMU of dpkg will pick up the > threading support. Please do

Re: multi threaded support for xz

2016-10-05 Thread Sebastian Andrzej Siewior
On 2016-10-06 02:50:00 [+], HW42 wrote: > Is the new multi-thread compressor reproducible? I.e. does it produce > the same output regardless of the number of CPUs, the CPU speed, system > load, etc.? (A very quick look at the source suggest that this is not > the case but I might be totally mis

Re: multi threaded support for xz

2016-10-05 Thread HW42
[Please keep me in CC. I'm not subscribed.] Sebastian Andrzej Siewior: > xz-utils 5.2.2 with threading support for the compressor is currently > in the deferred queue for another 24 hours [0]. > Once this version has been built a binNMU of dpkg will pick up the > threading support. dpkg will the u

multi threaded support for xz

2016-10-05 Thread Sebastian Andrzej Siewior
xz-utils 5.2.2 with threading support for the compressor is currently in the deferred queue for another 24 hours [0]. Once this version has been built a binNMU of dpkg will pick up the threading support. dpkg will the use the number of online CPUs for compression [1] in a "dpkg-deb -b" invocation.