Dave Dykstra wrote:
> On Fri, May 25, 2001 at 02:19:59PM -0500, Dave Dykstra wrote:
> ...
> > Use the -W option to disable the rsync algorithm. We really ought to make
> > that the default when both the source and destination are local.
>
> I went ahead and submitted a change to the rsync CVS to automatically turn
> on -W when the source and destination are both on the local machine.
So how do I revert that on the command line?
I've been trying with -W doing my disk to disk backups, and I've had
to go back to not using -W. Will -c do that? The reason is the load
on the machine gets so high, nothing else can run. This is not CPU
load, but rather, buffering/swapping load. CPU load just slows other
things down. But buffering/swapping load brings other things to a
grinding halt. I suspect Linux's tendency to want to keep everything
that anything writes in RAM, even if that means swapping out all other
processes, is impacted by this. So I'll need a way to not have the
effect of -W to use rsync for disk to disk backups.
The fact that rsync loads so much into VM probably makes the problem
a bit worse in this case. I saw 1 process at 35M and 2 processes at
70M (total 175M used by rsync, in addition to all the buffered writes).
I'm wondering if rsync is even a good choice for disk to disk backup
duty. Is there some option I missed that disables pre-loading all
the file names into memory?
I also tried the --bwlimit option and it had no effect, not even on
the usual download syncronizing over a dialup that I do. I could
not get it to pace the rate below the dialup speed no matter what
I would specify.
--
-----------------------------------------------------------------
| Phil Howard - KA9WGN | Dallas | http://linuxhomepage.com/ |
| [EMAIL PROTECTED] | Texas, USA | http://phil.ipal.org/ |
-----------------------------------------------------------------
