On Wed, 25 Sep 2002, Rod Walker wrote:
> The globus-url-copy hanging problems have been tracked down to be tcp
> related. In very short summary, the client works from RH6.2 but often
> fails from Rh7.3(and 7.x) when connecting to a busy machine.(globus bug
> 256 for more info, and
> http://bugzilla.globus.org/bugzilla/show_bug.cgi?id=324)
Ah - glad to hear you got to the bottom of this.
> I noticed some differences in the tcp configuration 6.2 -> 7.3, e.g.
>
> net.ipv4.tcp_syn_retries 10 -> 5
> net.ipv4.tcp_retries1 7 -> 3
>
> I want to try changing these. What do I have to do/restart, eg.
> just
> /sbin/sysctl -w net.ipv4.tcp_syn_retries=10
>
> or that and
> /etc/rc.d/init.d/network restart
>
> or reboot?
I suspect that if you get the settings to change in /proc/sys/net/ipv4
then you've done it, since those virtual "files" come directly from kernel
memory space.
Cheers,
Andrew
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