We're in the middle of analyzing something like this with IBM now. We don't see connection drops on anything but Samba, but ping times (normally .4 ms.) go to 5-10 ms. with spikes up to 1000. This seems to require a VM IPL to correct.
Periodically, a single Linux instance will start experiencing ping times of 600-3000 ms. until the instance is rebooted. > -----Original Message----- > From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of > Alan Schilla > Sent: Thursday, October 23, 2003 2:48 PM > To: [EMAIL PROTECTED] > Subject: [LINUX-390] suse 8 guestlan poor response, dropped packets > > > We are running a number of qdio qeth guest lans that are > experencing very > poor response. While accessing these servers via putty SSH I will drop > connection often. Sometimes within 5 minute intervals. I when > so far as to > try ping 1000 from an iptables guest lan server that > front-ends an apache > webserver guest lan and this ping received multiple > multi-second responses > (as high as 59 seconds) as well as a 48% packet loss 516 out > of 1000 packets > accepted. I have been following this listserv and noticed > Micheal Lambert's > zVM 4.4 guestlan problems thread and thought this may be > related but we run > zVM 4.3 planning to upgrade to 4.4 shortly. Has anyone seen > this type of > response from guestlan on zVM 4.3 for qeth, qdio? Any > thoughts on how I > should troubleshoot? > Environment: > osa-2 100m > | > zvm tcpip > | > guest lan firewall > | > guest lan apache server > > Al Schilla > State of Minnesota >
