This is the mail archive of the cygwin-developers mailing list for the Cygwin project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: Cygwin Rsync/SSH performance issue


On Tue, Feb 16, 2010 at 04:45:38PM +0100, Jan Alphenaar wrote:
>Hi again,
>
>I did some more testing on this and figured out that rsync/ssh is only
>taking the full cpu if the bandwidth allocated to the session exceeds the
>true bandwidth available on the link.
>
>For example, if the uplink is 128KB/s and I pass in the --bwlimit=24
>parameter the cpu is around 0%. Even --bw-limit=126 does not take 100% cpu,
>but --bwlimit=132 does.
>
>Would this be because of packet loss on the link and packets have to be
>retransmitted ? I will do a quick test tonight with rsync/ssh between two
>linux boxes, see what that gives me.

This is still off-topic for this mailing list.  Please use the main cygwin
list.

cgf


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]