> Maybe, but I try with two different servers, with different hardware. > First one: > Xeon 3,2Ghz; 2 hdd on SCSI raid 1. 4Gb RAM. ( Open Ent. Server ) > Second one: > Pentium 4 2,8Ghz; 1 SATA Disk, 2 Gb RAM. ( Open Ent Server too ) > > The performance on both cases is similar. So i don't think the problem > is on the hardware. > My point for asking this is if the source and destination are the same disk/array that this will increase the amount of seeking because the backup will also be writing to the disk. This seeking will very much hurt performance. Remember hard drives are very fast at reading large bits of data sequentially but slow when they have to read small bits of data scattered all over the disk.
> > Have you timed the same backups using tar? It should be shorter than > > with bacula but does it have a similar ratio? > > > > Yes, i do it, happens the same. :( If so this is not a bacula problem. There are a few ways you can help this. Tuning the readahead cache, possibly defragmenting the drive and possibly also changing the filesystem. For the first one there are several kernel params you can adjust and also you can use the blockdev command (provided you have a 2.6 kernel). The defragging part, may be more difficult as only a few filesystems have this ability and I am not sure how much control you have over this but basically you want to force the OS to write your files sequentially in the order that they will be accessed in the backup thus reducing the seeking to a minimum. As for the filesystem choice with journaling file systems there usually is a penalty for how much protection they gaurantee. John ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
