On Tue, 5 Dec 2017, Pan K via libssh2-devel wrote:

Since the undesirable behaviour is the high CPU usage when the socket is not available, would not running the SFTP transfer in non-blocking mode help?  

Busy-looping like that is a bug, so if libssh2 does it it is a bug we should track down and fix. You could probably use non-blocking mode as a work-around, as then you can handle the looping in your own code.

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 / daniel.haxx.se
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