Ralf Gross schrieb:
> Tyler J. Wagner schrieb:
> >
> >
> > On Wednesday 26 May 2010 14:34:40 Sorin Srbu wrote:
> > > >-----Original Message-----
> > > >From: Les Mikesell [mailto:lesmikes...@gmail.com]
> > > >Sent: Wednesday, May 26, 2010 2:55 PM
> > > >To: General list for user discussion, questions and support
> > > >Subject: Re: [BackupPC-users] speed up backups
> > > >
> > > >After the 1st 2 fulls, rsync should be better if you have enabled
> > > >checksum
> > > >caching. You do need plenty of RAM to hold the directory listing if you
> > >
> > > have a
> > >
> > > >large number of files.
> > >
> > > That was the checksum= 31thousandsomething to be added somewhere. I need
> > > to
> > > find that mail in the archives...
> > >
> >
> > Add to RsyncArgs and RsyncRestoreArgs:
> >
> > --checksum-seed=32761
> >
> > The best thing about BackupPC is that all help is available from the web
> > interface.
>
> Ok, I give it a shot. Changed the Xfer method to rsync, updated to
> rsync 3.0.2 (I know I will not benefit much because of BackupPC's own
> rsync perl module) and added the --checksum-seed option.
>
> Right now the rsync process is consuming 370 MB and is still growing.
> The file server has 7.000.000 files. Let's see what happens...
Hm, after 45 minutes the memory usage stopped growing at 540 MB. But now I
don't see any activity at all. Neither on the file server, nor on the BackupPC
server. Nothing in the BackupPC log since start of the backup. Nothing in the
the NewFileList file.
On the file server I get this info with lsof:
# lsof | grep rsync
rsync 31139 root cwd DIR 104,1 4096 2
/
rsync 31139 root rtd DIR 104,1 4096 2
/
rsync 31139 root txt REG 104,1 384304 571696
/usr/bin/rsync
rsync 31139 root mem REG 0,0 0
[heap] (stat: No such file or directory)
rsync 31139 root mem REG 104,1 97928 2026757
/lib/ld-2.3.6.so
rsync 31139 root mem REG 104,1 26088 2023687
/lib/libacl.so.1.1.0
rsync 31139 root mem REG 104,1 31784 2023965
/lib/libpopt.so.0.0.0
rsync 31139 root mem REG 104,1 1286104 2026779
/lib/libc-2.3.6.so
rsync 31139 root mem REG 104,1 15568 2023689
/lib/libattr.so.1.1.0
rsync 31139 root 0u unix 0xffff81020f1ffc80 29056104
socket
rsync 31139 root 1u unix 0xffff81020f1ffc80 29056104
socket
rsync 31139 root 2u unix 0xffff81020f1ff380 29056106
socket
strace on the BackupPC server (BackupPC_dump process):
$strace -f -p 11972
Process 11972 attached - interrupt to quit
select(8, [7], NULL, [7], NULL
strace on the file server (rsync):
$strace -f -p 31139
Process 31139 attached - interrupt to quit
select(1, [0], [], NULL, {11, 972000}
Ralf
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