Re: [BackupPC-users] maximum clients/data
2008-11-26 14:05:29
Tino Schwarze <backuppc.lists AT tisc DOT de> wrote on 11/26/2008 01:24:47 PM:
> > > Have you looked at the wait column (last one) in vmstat?
> >
> > As in iowait? Usually the CPU is "100%" used, but much of it is
iowait
> > (~40-60%, IIRC). Of course, you *expect* that: I'm I/O bound, after
all,
> > with only a single IDE hard drive... Also, I'm not using compression,
> > which is also why I'm not worried about CPU.
>
> In my version of vmstat, iowait is not accounted to CPU usage (SuSE
> 10.2).
You are right: I think it's the same on mine (CentOS 5.2). I'm thinking
of top, where the total CPU is shown as 100%.
But the point holds: I have lots of unused CPU, even with an *anemic*
EPIA @ 1.2GHz.
I'm still not sure why people say they need multi-GB of RAM and multi-GHz
CPU's for their BackupPC servers. I *just* don't see why: I've got a
pool >600GB on a *tiny* box (without compression, anyway). Maybe if
you've got >1TB of pool data or multi-millions of files you *might* need a
little more RAM (and I don't think that is the case), but I *still* don't
see why you'd need more than 1GB of RAM, and still no more CPU power.
Again, you need a many-drive RAID array *way* more than you do need CPU or
RAM.
Maybe I'm the only person who's running BackupPC on a box this small. But
I've got about a *dozen* of these boxes scattered around various clients,
backing up between 10 and 600GB of data. They *all* run flawlessly.
Oh, and a *BIG* thank you to Craig for this. BackupPC lets me sleep
better at night.
Tim Massey
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- [BackupPC-users] maximum clients/data, chantal
- Re: [BackupPC-users] maximum clients/data, Rob Owens
- Re: [BackupPC-users] maximum clients/data, Tino Schwarze
- Re: [BackupPC-users] maximum clients/data, tmassey
- Re: [BackupPC-users] maximum clients/data, Tino Schwarze
- Re: [BackupPC-users] maximum clients/data, tmassey
- Re: [BackupPC-users] maximum clients/data, Tino Schwarze
- Re: [BackupPC-users] maximum clients/data,
tmassey <=
- Re: [BackupPC-users] maximum clients/data, Tino Schwarze
- Re: [BackupPC-users] maximum clients/data, Jeffrey J. Kosowsky
- Re: [BackupPC-users] maximum clients/data, tmassey
- Re: [BackupPC-users] maximum clients/data, Jeffrey J. Kosowsky
- Re: [BackupPC-users] maximum clients/data, chantal
- Re: [BackupPC-users] maximum clients/data, Ski Kacoroski
- Re: [BackupPC-users] maximum clients/data, tmassey
- Re: [BackupPC-users] maximum clients/data, dan
- Re: [BackupPC-users] maximum clients/data, Thomas von Eyben
- Re: [BackupPC-users] maximum clients/data, Jeffrey J. Kosowsky
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