Re: Out of memory error during git push

(+cc: Nicolas, who knows the packing code pretty well)

Hi,

Thomas Jampen wrote:

I'm experiencing the following error while pushing a git repo (home
directory) to my QNAP TS-210:

user@mypc:~$ git push origin master
Counting objects: 12532, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (8974/8974), done.
fatal: Out of memory, malloc failed, 986.06 MiB | 1.65 MiB/s
error: pack-objects died of signal 13

What version of git are you using?  Do you have overcommit accounting
enabled?

I am not sure this is the problem you are running into, but pack-objects
like many other parts of git uses mmap() to read packfiles, which can
make the address space usage high.

I've searched the internet and found suggestions to try to repack with
lower values for 'depth', 'window' and 'windowMemory'. I used 3, 3, 50
respectively, but a push after the repack command resulted in the same
error.

I tried git fsck which reported a few dangling blobs only and I got the
same error again during the next push.

I watched /proc/meminfo and /proc/swaps on the NAS while pushing and saw
that there are always 20-50MB of free RAM and that from 512MB swap space
only about 180MB are used.

I don't know --- this is out of my depth. :)

Good luck,
Jonathan