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Bump version number to 0.542.

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Choose sane defaults for memory usage since linux ludicriously overcommits.
Use sliding mmap for any compression windows greater than 2/3 ram.
Consolidate and simplify testing of allocatable ram.
Minor tweaks to output.
Round up the size of the high buffer in sliding mmap to one page.
Squeeze a little more out of 32 bit compression windows.
This commit is contained in:
Con Kolivas 2010-11-20 01:23:08 +11:00
parent 25e053ed49
commit 75e675e6dd
6 changed files with 116 additions and 91 deletions
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ChangeLog
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@ -1,4 +1,18 @@
lrzip ChangeLog
NOVEMBER 2010, version 0.542 Con Kolivas
* Choose sane defaults for memory usage since linux ludicriously overcommits.
* Use sliding mmap for any compression windows greater than 2/3 ram.
* Consolidate and simplify testing of allocatable ram.
* Minor tweaks to output.
* Round up the size of the high buffer in sliding mmap to one page.
* Squeeze a little more out of 32 bit compression windows.
NOVEMBER 2010, version 0.541 Con Kolivas
* Fix wrong number of passes reported.
* Re-fix the off-by-one that wasn't off-by-one.
* Limit lzma compression windows to 300MB as per reports of failures with larger
windows.
NOVEMBER 2010, version 0.540 Con Kolivas
* Massive rewrite of backend decompression phse, implementing multithreading.
This is done by taking each stream of data on read in into separate buffers for
@ -7,9 +21,11 @@ into runzip once it is requests more of the stream. Provided there are enough
chunks in the originally compressed data, this provides a massive speedup
potentially proportional to the number of CPUs. The slower the backend
compression, the better the speed up (i.e. zpaq is the best sped up).
* Fix the output of zpaq compress and decompress from trampling on itself and racing and consuming a lot of CPU time printing to the console.
* Fix the output of zpaq compress and decompress from trampling on itself and
racing and consuming a lot of CPU time printing to the console.
* When limiting cwindow to 6 on 32 bits, ensure that control.window is also set.
* When testing for the maximum size of testmalloc, the multiple used was out by one, so increase it.
* When testing for the maximum size of testmalloc, the multiple used was out by
one, so increase it.
* Minor output tweaks.
* Build warning fixes.
* Updated benchmarks.