4.57 4.58 beta x64 7zip does not use threading with LZMA
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#838 4.57 4.58 beta x64 7zip does not use threading with LZMA
Platform:
HP DL360 G5
2 x E5335 Xeon Quad-core
8GB RAM
Windows Server 2003 R2 x64 Enterprise
Whether executing from the command line or from the GUI, 7zip will not use more than one core to compress or decompress when using LZMA.
When using Bzip2 it will use up to all 8 threads.
Also, when specifying -mt=2 or -mt=on on the command line, the error will be returned: 'The parameter is incorrect', when according to the documentation these should be valid options (even though mt=on is the default).
Logged In: YES
user_id=1330780
Originator: NO
confirm this bug. See also http://sourceforge.net/forum/forum.php?thread_id=2164977&forum_id=45797
This is a duplicate of 1820956
https://sourceforge.net/tracker/index.php?func=detail&aid=1820956&group_id=14481&atid=364481