Hi Alex,

Ok, thanks for that suggestion, I’d thought of it, but wasn’t sure if rsync 
would complain if the arg appeared twice, but apparently it doesn’t.

I am NOT sure whether bandwidth limitation is what I want.  I am actually 
trying to throttle down not only the network bandwidth used but also the I/O 
load.  This is a shared file system with hundreds of users accessing it.  I’m 
only backing up our lab’s small portion of the data, and I’m only backing up 
files less than 1 MB in size.  The full backups are done separately by someone 
else in a different manner.  For my <1 MB files, I am doing a full backup once 
a year and an incremental backup once an hour.  I want to have essentially 0 
impact on the network bandwidth and on the I/O load between the server that 
talks to BackupPC and the network storage device.  Since I’m just starting, I’m 
doing the first full backups, and they are taking forever.  I have a bandwidth 
limit of 1 MB/s, very low.  I need to explore how high I can go without 
impacting other’s access, and how high I need to go to finish the full backups 
and incremental backups in a timely fashion.  I’m thinking a higher bandwidth 
limit for the full backups would get them done quicker with still little 
impact.  For the incrementals, I haven’t done one yet so I don’t know how long 
it will take, but I may discover I have to increase that bandwidth also, and/or 
decrease the frequency of the incrementals.

Based on that, do you think I should be using ionice too?  And by the way, I do 
not have root access to the server.

Ted



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