Rsync limiting bandwidth - howto

[drmike]

If you are like most of us, rsync is a tool you use far too much.

One issue I run into from time to time is rsync saturating a connection and reducing performance of a network for users (high CPU load).

Rsync has a built in CLI switch for regulating  bandwidth usage:

--bwlimit=5000


Appending that to your current rsync command should limit you to 5MB of throughput on the file transfer.

Typically something like this:

rsync --bwlimit=5000  [rest of CLI command]

 

[kro]

Hmm, I take it your not a huge fan on man?             

--bwlimit=KBPS          limit I/O bandwidth; KBytes per second

I always crawl man pages some tools can do things you wouldn't even think of ^_^

 

[drmike]

Sure I use man from time to time.

I see other folks head bumping with cron rsync issue and other non QoS / shaped networks and dragging their stuff down.  Ideally it saves 1 person a slight headache.

Tons of features in rsync  

 

[kro]

Sure I use man from time to time.

I see other folks head bumping with cron rsync issue and other non QoS / shaped networks and dragging their stuff down.  Ideally it saves 1 person a slight headache.

Tons of features in rsync

Oh defo, no doubt it'll save many headaches. Most likely plenty who have no idea of its existence. +1

 

[Raymii]

I like this tip! Thanks I can think of a few situations where this can come in handy.. My current clients however all have gigabit or higher. Not all my VPS's, so I'm going to tweak some duplicity scripts

 

[zim]

Yea this is a good tip for people looking to rate some small backup scripts.. +1