>> > I'm using rsync for simple daily back up data from one HD to another. It >> > takes about 10 minutes daily under "nice -n 19". The problem is >> > well-known as I see - several other services such as httpd or mysql >> > begin responding slowly (up to 10 sec for mysql queries which usually >> > processed in a small fraction of a second). >> --bwlimit=KBPS limit I/O bandwidth; KBytes per second MM> --bwlimit only limits the rate of transfer over the network. Vilius MM> Puidokas encountered the same problem and traced it to the scanning as MM> rsync generates the file list. He wrote a patch that adds a --slow-down MM> option that makes rsync wait a few microseconds in between scanning each MM> file. Find it here: MM> http://vilius.multiply.com/video/item/10
usleep(100) in that place of the source shown on the page really helps, but it dramatically increases the time of rsync'ing. I guess Vilius' supposition that usleep(100) for 10k of dirs is 10 sec is a bit wrong, it seems to be not a simple multiplication. Best regards, Denis Solovyov -- To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
