svn out of memory in cygwin64

在cygwin用svn 拉代碼，報錯！！！

libsvn: Out of memory - terminating application.
Aborted (core dumped)

新舊的內存修改方法
This is an old method and doesn't work anymore:
> % regtool -i set /HKLM/Software/Cygwin/heap_chunk_in_mb 2000
the new mathod: (https://cygwin.com/cygwin-ug-net/setup-maxmem.html)
> % peflags --cygwin-heap=2000 /bin/perl.exe  
> % peflags --cygwin-heap /bin/perl.exe
> /bin/perl.exe: initial Cygwin heap size: 2000 (0x7d0) MB

修改了cygwin的內存到4G還是不行。。。

xxxx@6CR6153YT2 /cygdrive/d/ws/7100OTS/trunk
$ peflags --cygwin-heap  /usr/bin/svn.exe
/usr/bin/svn.exe: initial Cygwin heap size: 2048 (0x800) MB

xxxx@6CR6153YT2 /cygdrive/d/ws/7100OTS/trunk
$ peflags --cygwin-heap=4096  /usr/bin/svn.exe
/usr/bin/svn.exe: initial Cygwin heap size: 4096 (0x1000) MB