I'm currently running Debian sarge with the e1000 driver on a few servers. I'm seeing variable round trip times when I send pings to any host from a host with the Intel Pro/1000 MT. Meaning, I don't have to ping between these hosts to get the variable RTTs. Comparitively, on two other servers which are also running sarge, I have extremely consistent RTTs. The RTTs are all sub millisecond, but it concerns me that there is a fluctuation here. My guess is that it's either related to the Intel Pro/1000 hardware or the device drivers. Does anyone have any clues on this? Incidentally, I've swapped out the switch and tested it with the consistent ping time servers - it's not the switch. Oh, and all hosts are on the same switch.
Ping capture below: 64 bytes from 172.20.1.11: icmp_seq=1 ttl=64 time=0.153 ms 64 bytes from 172.20.1.11: icmp_seq=2 ttl=64 time=0.325 ms 64 bytes from 172.20.1.11: icmp_seq=3 ttl=64 time=0.249 ms 64 bytes from 172.20.1.11: icmp_seq=4 ttl=64 time=0.173 ms 64 bytes from 172.20.1.11: icmp_seq=5 ttl=64 time=0.219 ms 64 bytes from 172.20.1.11: icmp_seq=6 ttl=64 time=0.142 ms 64 bytes from 172.20.1.11: icmp_seq=7 ttl=64 time=0.189 ms 64 bytes from 172.20.1.11: icmp_seq=8 ttl=64 time=0.111 ms 64 bytes from 172.20.1.11: icmp_seq=9 ttl=64 time=0.282 ms 64 bytes from 172.20.1.11: icmp_seq=10 ttl=64 time=0.204 ms 64 bytes from 172.20.1.11: icmp_seq=11 ttl=64 time=0.251 ms 64 bytes from 172.20.1.11: icmp_seq=12 ttl=64 time=0.175 ms 64 bytes from 172.20.1.11: icmp_seq=13 ttl=64 time=0.221 ms 64 bytes from 172.20.1.11: icmp_seq=14 ttl=64 time=0.144 ms 64 bytes from 172.20.1.11: icmp_seq=15 ttl=64 time=0.192 ms 64 bytes from 172.20.1.11: icmp_seq=16 ttl=64 time=0.237 ms 64 bytes from 172.20.1.11: icmp_seq=17 ttl=64 time=0.284 ms 64 bytes from 172.20.1.11: icmp_seq=18 ttl=64 time=0.207 ms 64 bytes from 172.20.1.11: icmp_seq=19 ttl=64 time=0.253 ms 64 bytes from 172.20.1.11: icmp_seq=20 ttl=64 time=0.178 ms Compared to non-Intel card servers: 64 bytes from 192.168.1.110: icmp_seq=1 ttl=64 time=0.164 ms 64 bytes from 192.168.1.110: icmp_seq=2 ttl=64 time=0.169 ms 64 bytes from 192.168.1.110: icmp_seq=3 ttl=64 time=0.165 ms 64 bytes from 192.168.1.110: icmp_seq=4 ttl=64 time=0.167 ms 64 bytes from 192.168.1.110: icmp_seq=5 ttl=64 time=0.172 ms 64 bytes from 192.168.1.110: icmp_seq=6 ttl=64 time=0.166 ms 64 bytes from 192.168.1.110: icmp_seq=7 ttl=64 time=0.166 ms 64 bytes from 192.168.1.110: icmp_seq=8 ttl=64 time=0.167 ms 64 bytes from 192.168.1.110: icmp_seq=9 ttl=64 time=0.168 ms 64 bytes from 192.168.1.110: icmp_seq=10 ttl=64 time=0.166 ms 64 bytes from 192.168.1.110: icmp_seq=11 ttl=64 time=0.165 ms 64 bytes from 192.168.1.110: icmp_seq=12 ttl=64 time=0.163 ms Thanks, Mark __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
