On Fri, Aug 13, 2010 at 4:44 PM, Chris Baker <cbaker AT intera DOT com> wrote:
>
> I have a computer that is about three months old. It has Windows 7 64-bit.
> For some reason, the throughput on backups is quite poor. It's about 1.5
> MB/sec. It has a 1 Gbps network card. Network switches and BackupPC server
> also run at 1 Gpbs.
>
> Other PC's on my network get 4 or 5 MB/sec. Some of these PC's are four
> years older and have 100 MBps network cards. Some even have IDE hard drives.
>
> I am using smb on everything. I am naturally curious as to why this one
> machine does so poorly.
>
> This machine was purchased in a batch of four machines. The other three PC's
> also run Win7-64 and have the same hardware. Their throughput is pretty
> good.
>
> The only change I can think of is that I did change the hard drive in this
> slower PC from a 250 GB to a 500 GB drive.

Unless this is a common problem that someone has a canned answer for,
which is doesn't look to be, I think you're stuck with process of
elimination.

Some ideas:
- Check for any BackupPC client configuration differences, if it's in
separate files (or could be made that way) then using a tool like
'diff' would highlight configuration differences.
- Check network throughput on the client for other file transfers. Is
the BackupPC server the only one that gets poor throughput to it? What
about manually copying a file over cifs.
- Is the client on the same subnet or physical switch as the other 3
identical machines that work correctly? If not, can you temporarily
make it that way for testing?

Richard

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