Amit, I don't think you told us how many client systems, compression can be done on the client or the server. Also, besides the inparallel and maxdump settings, are you short on work area - as Jean-Louis said, the amplot output will help you spot those bottlenecks.
Brian On Thu, Mar 14, 2013 at 08:27:11AM -0400, Jean-Louis Martineau wrote: > Compression is often a CPU bottleneck, did you check for cpu usage? You > can try to use pigz instead of gzip if you have available core. > > How many dump are you doing in parallel? You can try to increase > inparallel, netusage and/or maxdumps. > > You can use amplot and amstatus to check amanda performance. > > Jean-Louis > > > On 03/13/2013 10:44 PM, Amit Karpe wrote: > >Hi all, > >I am using Amanda to take backup weekly & monthly. For monthly backup > >which is 2.5 to 2.7TB in size after backup with compression, it take > >4-5 days. (Total size is around 6-7 TB, and there 52 entries DLEs, > >from 10 different host in network. I am backuping on NAS, where I have > >19T total space.) > >Off course there are various parameter we have to consider to claim > >whether it is slow process or not. > >Could you please let me know how should I check and compare whether my > >backup process is slow or not ? > >Which are main parameter which affect Amanda Performance ? > >Which tool I should use to check Amanda Performance ? > >Currently I am using following steps: > > > >1. I have started monthly backup. > >2. Using bandwidth monitoring tools i.e. ntop, bmon I am checking > >Backup Server to NAS bandwidth usage & trafic status. > >3. Using iotop I am checking status / speed of io operation. > >4. There are other few tools, which may help to understand io, had > >disk usage. But as my backup directory is not a local device, (I have > >mounted as nfs directory) I can't run hdparm or iostat directly. > >5. Monitoring NAS's admin interface for its bandwidth usage. > >6. Currently I am checking for some spastics, which help to compare > >with my current setup. > > > >Still I can't understand whether I going right way or not ! > >It will be if you help me here. > > > >-- > >Regards > >Amit Karpe. > >http://www.amitkarpe.com/ > >http://news.karpe.net.in/ > --- Brian R Cuttler brian.cutt...@wadsworth.org Computer Systems Support (v) 518 486-1697 Wadsworth Center (f) 518 473-6384 NYS Department of Health Help Desk 518 473-0773
