rsync & server load
I'm using rsync to sync images from an internal system to an external webserver. The directory contains about 5000 images whaich don't change very oftern
On the target webserver, whenever rsync is in progress the server load goes up from it's normal 0.1 to somewhere between 1.5 and 2. I know this is not particulaly high, but it is affecting my database performance.
Why does rsycnc use so much of the load, and is there anything I can do to cut it down?
I'm running fefora core 3 on a duel xeon machine with 4gb of ram.
i found that putting using nice 19 on the source end seems to affest the destination end too. ie
rsync -rv /home/me/ someone@somewhere:/home nice 19
seems to keep the load low on the server
maybe its too late to replay to this but i solved similar problem by adding --whole-file flag to the command. As a result, rsync do not use its delta algorythm that consumes lots of cpu calculating differences inside files. It just copies the files if modification time or size changed.
i think this will work if you backup image files.
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