rsync error: error allocating core memory buffers

Kevin Korb kmk at
Thu Apr 9 10:37:04 MDT 2015

Hash: SHA1

You should not be using rsync's --checksum during routine backups.  It
is only for very rare use cases not every backup run.

On 04/09/2015 04:43 AM, Hans Kraus wrote:
> Hi,
> I've configured 'backuppc' to transfer files via rsyncd, with
> enabled checksums. Whith one of the shares I get the error (in
> syslog): 
> ---------------------------------------------------------------------
robbe rsyncd[2183]: ERROR: out of memory in receive_sums [sender]
> robbe rsyncd[2183]: rsync error: error allocating core memory
> buffers (code 22) at util2.c(106) [sender=3.1.2dev] robbe
> rsyncd[9821]: connect from elefant.control.local ( 
> robbe rsyncd[9821]: rsync on . from backuppc at elefant.control.local 
> ( 
> ---------------------------------------------------------------------
I read that the memory overflow comes from bulding the checksums list.
> Is there a way to find out where in the file tree that overflow
> occurs for determine splitting points?
> The OS is Debian 7.4 amd, 24 GB RAM, 32 GB swap.
> Kind regards, Hans

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