This is the mail archive of the cygwin mailing list for the Cygwin project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: xz -9 : Cannot allocate memory


On 15/11/12 06:30, JonY wrote:
On 11/15/2012 13:37, Peter Rosin wrote:
On 2012-11-15 05:40, marco atzeri wrote:
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.

The -9 option works for me without modifying Cygwin heap.


Thank you all for your help. I have repeated the above test using /usr/i686-pc-mingw32/sys-root/mingw/bin/xz -9 and this worked OK. This is the same version of xz (5.0.2), but compiled up using mingw (and therefore presumably not using cygwin1.dll).


If it helps in reproducing this problem, I am /still/ using Windows XP Pro SP3.

Many thanks,

Dave.



--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]