Le 11.03.2013 02:17, backu...@kosowsky.org a écrit :
Holger Parplies wrote at about 02:00:45 +0100 on Monday, March 11, 2013:
> Hi,
>
> ashka wrote on 2013-03-10 18:55:38 +0100 [Re: [BackupPC-users]
BackupPC_dump memory usage]:
> > Le 10.03.2013 18:16, Les Mikesell a écrit :
> > > On Sun, Mar 10, 2013 at 4:01 AM, ashka <shellgrat...@gmail.com> wrote:
> > >> [...]
> > >> I'm using BackupPC 3.2.1 and I'm having a lot of trouble with a server
:
> > >> the BackupPC_dump process takes something close to 10Gb of RAM.
> > >> In addition, the backup process keeps dying like that :
>
> 10 GB, really? That means you are running a 64-bit system and you have *a
lot*
> of RAM. How much *do* you have, and which column of 'ps' output are you
> quoting? I wouldn't be surprised at all if the cause of the process dying is
> an 'out of memory'. Is your system swapping? How much swap does it have, how
> much is used?
>
> > > If you are using rsync, both ends will hold the directory contents of
> > > the whole tree in RAM during the transfer for comparison. If you have
> > > millions of files you may not have enough ram for that.
>
> Absolutely correct, and the *first* thing to check. Honestly, the fact that
> you don't have an answer to this comment before asking your question below
> irritates me.
>
> > > Also, if you haven't already checked you might want to be sure that no
> > > other backups are running at the same time as the one having problems.
> >
> > Is there a nice way to achieve that with BackupPC ?
>
> That has been answered, but really, 10 GB for one backup process feels
wrong.
> Having concurrent backups running would make things even *worse*, but *not*
> having them running doesn't fix it.
>
Seems wrong to me too considering that I back up about a dozen
machines using a plugcomputer with a single ARM core running at 800MHz
with just 512MB of RAM and no swap. Heck, I have for kicks got it
running on a DNS-323 NAS with I think just 64MB or RAM (though I do
have about 512MB in swap) and a 500MHz ARM core. I even run 2-3 dumps
at once.
The point is that BackupPC typically isn't such a resource a hog by at
least an order of magnitude... unless you perhaps have a very
different situation from ordinary pc-type backups...
------------------------------------------------------------------------------
Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
endpoint security space. For insight on selecting the right partner to
tackle endpoint security challenges, access the full report.
http://p.sf.net/sfu/symantec-dev2dev
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Hello,
(FYI, I did kind of solve the problem by excluding tons of file, but I'd
like to keep them anyway)
> 10 GB, really? That means you are running a 64-bit system and you have *a
lot*
> of RAM. How much *do* you have, and which column of 'ps' output are you
> quoting? I wouldn't be surprised at all if the cause of the process dying is
> an 'out of memory'. Is your system swapping? How much swap does it have, how
> much is used?
I'm using htop for simplicity purposes. It uses sometimes about 10Gb, it
swaps when two backups are running at the same time.
> > > If you are using rsync, both ends will hold the directory contents of
> > > the whole tree in RAM during the transfer for comparison. If you have
> > > millions of files you may not have enough ram for that.
>
> Absolutely correct, and the *first* thing to check. Honestly, the fact that
> you don't have an answer to this comment before asking your question below
> irritates me.
I do have millions of files, I can't really get them out the backup
though. Those files are really important, and I excluded them
temporarily just to see how it was working out.
--
ashka
------------------------------------------------------------------------------
Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester
Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
endpoint security space. For insight on selecting the right partner to
tackle endpoint security challenges, access the full report.
http://p.sf.net/sfu/symantec-dev2dev
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