Trey Dockendorf wrote: > > On Sep 22, 2011 6:04 PM, "Les Mikesell" <[email protected] > <mailto:[email protected]>> wrote: > > > > Does anyone have a good estimate of the performance hit from running > > backuppc in a VM under VMware ESXi with nothing else sharing the > > physical disks for the archive? And are there any tuning tricks to > > optimize the partition alignment, etc.? > > > > There are a few things to make the VM faster. Ive found running the > virtual disks as either LSI parallel SAS or paravirtual (pvscsi) helps. > Also using VMXnet3 will lower cpu I/O on network activity. This will > require vmware tools for your respective distro. > > Alot would depend also on the disk and RAID level (assuming you use > RAID). My ESXi server on RAID 10 is doing well with 20 servers being > backed up and about 600GB of actual disk space used after pooling and > compression.
I don't run backuppc under ESX but I run a lot of other stuff that way. You shouldn't need to worry about alignment of the virtual disks. Whenever running under vmware, set your kernel to use HZ=100 instead of the default 100. RHEL & derivatives support a kernel boot option "divider=10" (I think) to do this. Bottom line there is measurable I/O overhead with ESX(i) but it's generally very low. vmxnet3 & pvscsi are definitely a win. as is running under vmware in general (snapshots ftw!). -- Dan Pritts, Sr. Systems Engineer Internet2 office: +1-734-352-4953 | mobile: +1-734-834-7224 ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2dcopy2 _______________________________________________ BackupPC-users mailing list [email protected] List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
