[xz-devel] Re: cache-aware match finder for blocks of 2**17 bytes

2013-03-18 Thread John Reiser
I've got my specialized match-finder working (minimize cache misses while processing blocks of size 2**17.) Now I find that it is slow, mainly because it finds *all* matches, even those that obviously are not good candidates for encoding. It seems to me that there are two missing parameters to

Re: [xz-devel] Can "xz -T0 SMALLFILE1 SMALLFILE2 ... FILE99" be made multi-threaded?

2018-06-15 Thread John Reiser
find $RPM_BUILD_ROOT/lib/modules/ -type f -name '*.ko' | xargs xz Shorten each piped pathname so that fewer invocations of xz are required: ( cd $RPM_BUILD_ROOT/lib/modules/; find . -type f -name '*.ko' | xargs xz ) --

Re: [xz-devel] Question about using Java API for geospatial data

2022-07-10 Thread John Reiser
On 7/10/22, Gary Lucas wrote: The other motivation for the block scheme is that the API provides random-access to data. Typically, if one is looking at data for Finland, one usually doesn't care much about the data from Australia.Thus the file is divided into regional blocks. So the choice of