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On 11/15/2012 13:37, Peter Rosin wrote:On 2012-11-15 05:40, marco atzeri wrote:The -9 option works for me without modifying Cygwin heap.On 11/14/2012 11:09 PM, David Stacey wrote:I am trying to use 'xz -9' to compress a file, but the programme exits with the error message 'Cannot allocate memory'. Here's what I tried:
$ echo Hello World > compress_me.txt
$ xz -9 compress_me.txt xz: compress_me.txt: Cannot allocate memory
$ xz --version xz (XZ Utils) 5.0.2 liblzma 5.0.2
Having read http://cygwin.com/cygwin-ug-net/setup-maxmem.html I tried the following:
$ peflags --cygwin-heap /usr/bin/xz.exe /usr/bin/xz.exe: initial Cygwin heap size: 0 (0x0) MB
$ peflags --cygwin-heap=1024 /usr/bin/xz.exe /usr/bin/xz.exe: initial Cygwin heap size: 1024 (0x400) MB
$ xz -9 compress_me.txt
And this worked. Is this the correct way to fix the problem? If so, please could we increment the heap size for xz in a post install script?a lot of programs have "Cygwin heap size: 0 (0x0) MB" but they work anyway
so the root cause is somewhere else.xz is notorious for its big up-front allocations, at least with some of the more aggressive options in effect.
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