Re: Debugging lufs vtape and amanda flushing-throtle for amanda
2005-05-24 19:56:05
On Tue, May 24, 2005 at 11:53:57PM +0200, Vlad Popa wrote:
> Hello Jon !
>
> Jon LaBadie schrieb:
>
> >On Mon, May 23, 2005 at 12:05:21PM +0200, Vlad Popa wrote:
>
> >I'll ask Paul's question slightly differently.
> >How can you WANT to run any slower (see below).
> >
>
> >>DUMP SUMMARY:
> >> DUMPER STATS TAPER STATS
> >>HOSTNAME DISK L ORIG-kB OUT-kB COMP% MMM:SS KB/s MMM:SS KB/s
> >>-------------------------- --------------------------------- ------------
> >>h50234 /etc 0 2440 2440 -- 0:03 930.1 9:26 4.3
> >>
> >
> >This was your biggest, and speediest successful taping.
> >It only ran at 4300 bytes/sec
...
> >Something is seriously wrong with your network connection to your vtape.
> >I strongly urge you to fix your network connection rather than continue
> >to try to get amanda (or any application) to work with a broken network.
> >
> You are absolutely right Jon, but I cannot tweak more the lufs.
I was thinking more of the hardware end of the setup. There have been
frequent mentions of poor network performance when a switch and host
are not configured correctly. Sometimes depending on the auto-config
feature of the switch or host does not give the best connection.
> I have tested native ftp transfers to this host (beside lufs) which were
> at about 4.3 mb per sec ("ftp hostname" and then "put file ..") for
> several files differring significantly in their size. The rate did not
> fall below 4 megs per sec.
Just an interesting observation, amanda sees 4.3 kb/sec, you got 4.3 mb/sec
for ftp transfers.
No other way to access that remote disk than still beta lufs and ftp?
--
Jon H. LaBadie jon AT jgcomp DOT com
JG Computing
4455 Province Line Road (609) 252-0159
Princeton, NJ 08540-4322 (609) 683-7220 (fax)
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