On Sat, 20 Nov 2010 18:17:23 -0600, Jay Leafey wrote:
> Les Mikesell wrote:
[...]
> This does ring a bell, but the circumstances were a bit different. In
> our case we were transferring large files between "home" and a remote
> site. SFTP/SCP transfers were stalling part-way through in an
> unpredictable manner. It turned out to be a bug in the selective
> acknowledgment functionality in the TCP stack. Short story, adding the
> following line to /etc/sysctl.conf fixed the issue:
>
>> net.ipv4.tcp_sack = 0
>
> Of course, you can set it on-the-fly using the sysctl command:
>
>> sysctl -w net.ipv4.tcp_sack=0
>
> It helped in our case, no way of telling if it will help you. As usual,
> your mileage may vary.
Googing around, I get the impression that disabling SACK might
lead to other problems. Any thoughts on this?
Thanks,
Mike.
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos
