On 10/9/07, James V <[EMAIL PROTECTED]> wrote: > I am trying to use rsync to backup our Linux server and when the rsync is > running it uses 1-2% CPU for most operations until it reaches a tar file (or > another file archive), then the CPU usage increases to 90%. I am assuming > that rsync is looking at the individual files in the tar archive and seeing > if any have changed instead of looking at the mod time and file size.
No, rsync does not do that; it treats all regular files as opaque. A more likely explanation for the CPU load is that rsync detected that the tar file as a whole had changed and was delta-transferring the contents, which can take a lot of CPU on the sending machine. If CPU time is more of a problem than network bandwidth, you can disable the delta-transfer algorithm by passing --whole-file. Matt -- To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
