On 06/25/2015 07:46 AM, SPQR wrote: > Hi Alan, > > Wow, this was really fast :-) Thanks for your answer. > > of course I know, that this is a io-consuming-process, but the load is really > too high. Other tasks that are done by the system (log rotation, ...) are not > working correctly and once the server crashed bc. of this high load. > > Wouldn't it be better to use ionice -c2 -n7, even if the backup-task works > longer? > > In this case the system would only read/write, if there are no other > processes which need the io.
I wonder if the "MaximumBandwidth =" setting in your Job resource might help you to reduce disk i/o load. If the File Daemon is self-limiting on what it can send over the network, surely what it is reading from the disk will be less. Just a thought, not something I would typically implement - fast backups seems to be the normal requirement. And usually the faster, the better. :) Either way, if you are reducing the resources (disk i/o or network bandwidth) your backups will take more time - A fact which you have already conceded to. :) You might also look into Virtual Full backups. This way you only have to suffer the high i/o once*, then do incremental jobs each day. Then, instead of running a full when the time comes (once/month or whatever your cycle is) you run a Virtual Full and the storage daemon creates a new full from the current full and the subsequent incremental/differential jobs - and the client FD is not even contacted while "full" backup is running. * It is probably a smart idea to run a real full job every once in a while: "Just In Case"(TM) Hope this helps! Bill -- Bill Arlofski http://www.revpol.com/bacula -- Not responsible for anything below this line -- ------------------------------------------------------------------------------ Monitor 25 network devices or servers for free with OpManager! OpManager is web-based network management software that monitors network devices and physical & virtual servers, alerts via email & sms for fault. Monitor 25 devices for free with no restriction. Download now http://ad.doubleclick.net/ddm/clk/292181274;119417398;o _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
