Processing Time
I cron schedule my amanda dump for 12:45 am, but it doesn't complete until about 9:00am. If I look at my switch graphs, the data transfer only takes about 1 hour. What is it doing the rest of the time???
Re: Processing Time
On Thu, Sep 19, 2002 at 08:52:31AM -0400, Jason Greenberg wrote: > I cron schedule my amanda dump for 12:45 am, but it doesn't complete > until about 9:00am. If I look at my switch graphs, the data transfer > only takes about 1 hour. What is it doing the rest of the time??? Writing to the tape. Amanda collects data to the holding disk as quickly as she can (within the limits of bandwidth usage specified in the configuration) and stores it until the tape is ready for it. Tapes are a lot slower than modern networks.
Re: Processing Time
--On Thursday, September 19, 2002 08:52:31 -0400 Jason Greenberg <[EMAIL PROTECTED]> wrote: > I cron schedule my Amanda dump for 12:45 am, but it doesn't complete > until about 9:00am. If I look at my switch graphs, the data transfer > only takes about 1 hour. What is it doing the rest of the time??? Look at your daily report, it tells you how long it took to dump and tape each disklist entry and the total dump and tape time. If you want to know what's going on while Amanda is still running, then run amstatus and it will tell you. Frank -- Frank Smith[EMAIL PROTECTED] Systems Administrator Voice: 512-374-4673 Hoover's Online Fax: 512-374-4501
Re: Processing Time
On Thursday 19 September 2002 08:52, Jason Greenberg wrote: >I cron schedule my amanda dump for 12:45 am, but it doesn't > complete until about 9:00am. If I look at my switch graphs, the > data transfer only takes about 1 hour. What is it doing the rest > of the time??? Try running amplot, you might be able to decode that better than I. It will show you what it was doing and for how long. -- Cheers, Gene AMD K6-III@500mhz 320M Athlon1600XP@1400mhz 512M 99.15% setiathome rank, not too shabby for a WV hillbilly
Re: Processing Time
On Thu, 19 Sep 2002, Gene Heskett wrote: > On Thursday 19 September 2002 08:52, Jason Greenberg wrote: > >I cron schedule my amanda dump for 12:45 am, but it doesn't > > complete until about 9:00am. If I look at my switch graphs, the > > data transfer only takes about 1 hour. What is it doing the rest > > of the time??? > > Try running amplot, you might be able to decode that better than I. > It will show you what it was doing and for how long. This is really the best way to understand how amanda is spending her time. What things are being done in parallel, what resources are fully or under-fully used, etc. If you want to know what one change will buy you the most speedup, study a cycle's worth of amplot graphs. -Mitch
