I would really continue digging into the IO performance. The CPU should not reach 100% during a backup, it's supposed to mostly wait for the disk IO. Most likely, your CPU is doing some extra work that should not take place.
You may also take a look at `iostat` to see if the disk are busy. You may also run a benchmark on this system. In the past, I used "phoronix test suite" which provide multiple test. In my case, one of the test never complete and server died. -- Patrik Dufresne Service Logiciel inc. http://www.patrikdufresne.com <http://patrikdufresne.com/>/ 514-971-6442 130 rue Doris St-Colomban, QC J5K 1T9 On Fri, Jun 14, 2019 at 2:32 PM Robert Farrington <[email protected]> wrote: > Thanks for your response. I don't think it's a hardware problem, but > here's our hardware setup: > > Pentium 4 3GHz > 2 1TB Western Digital hard drives in Raid-1 config, SATA-2 interface > It looks like we are using XFS and LVM. > > I know it's an old cpu, but the disks have been replaced recently. > > I can't usually look at the load average when the system freezes because I > can't do anything. But I have seen the CPU used 100% during a backup. > > Bob > On Wednesday, June 12, 2019, 8:00:03 PM PDT, Patrik Dufresne < > [email protected]> wrote: > > > It's probably not directly related to rdiff-backup but the high volume of > IO on the server. If you have a monitoring system, could you take a look at > loadaverage ? It's probably going up when the backup is running. It's > telling you the IO of the server is probably not capable enough. It might > be related to various factor. Could you provide more technical details > regarding your setup ? Hardware, RAID config, SATA or SAS, FileSystem, > ext4, LVM ? > > As an example. On one of our server, an LXC on Proxmox, running on ZFS, I > remeber I needed to disable a kernel feature related to huge memory page. > Otherwise, the container would died without apparent reason. > > -- > Patrik Dufresne Service Logiciel inc. > http://www.patrikdufresne.com <http://patrikdufresne.com/>/ > 514-971-6442 > 130 rue Doris > St-Colomban, QC J5K 1T9 > > > On Wed, Jun 12, 2019 at 8:49 PM Robert Farrington <[email protected]> > wrote: > > I am using rdiff-backup 1.2.8 on Centos 7, backing up a remote Centos 7 > computer. It occasionally freezes up the destination computer, and I can't > log in or ssh in to see what's wrong. If I leave it logged in and it > freezes, I still can't do anything to find out what's wrong. I have to > power cycle to get it back. Any suggestions on how to fix this?Bob > > _______________________________________________ > rdiff-backup-users mailing list at [email protected] > https://lists.nongnu.org/mailman/listinfo/rdiff-backup-users > Wiki URL: > http://rdiff-backup.solutionsfirst.com.au/index.php/RdiffBackupWiki > > _______________________________________________ rdiff-backup-users mailing list at [email protected] https://lists.nongnu.org/mailman/listinfo/rdiff-backup-users Wiki URL: http://rdiff-backup.solutionsfirst.com.au/index.php/RdiffBackupWiki
