app6 up
Toshio Kuratomi
a.badger at gmail.com
Thu Apr 24 02:15:59 UTC 2008
Answering myself, ping times from app4 (phx-Arizona), app5.vpn
(tummy-Colorado), and app6.vpn(telia-Germany) to db2(phx-Arizona)
[toshio at app4 ~]$ ping db2
PING db2.fedora.phx.redhat.com (10.8.34.120) 56(84) bytes of data.
64 bytes from 10.8.34.120: icmp_seq=1 ttl=64 time=0.249 ms
64 bytes from 10.8.34.120: icmp_seq=2 ttl=64 time=0.285 ms
64 bytes from 10.8.34.120: icmp_seq=3 ttl=64 time=0.764 ms
64 bytes from 10.8.34.120: icmp_seq=4 ttl=64 time=0.280 ms
[toshio at app5 ~]$ ping db2
PING db2.vpn.fedoraproject.org (192.168.1.19) 56(84) bytes of data.
64 bytes from 192.168.1.19: icmp_seq=1 ttl=64 time=43.7 ms
64 bytes from 192.168.1.19: icmp_seq=2 ttl=64 time=42.9 ms
64 bytes from 192.168.1.19: icmp_seq=3 ttl=64 time=42.9 ms
64 bytes from 192.168.1.19: icmp_seq=4 ttl=64 time=42.9 ms
[toshio at app6 ~]$ ping db2
PING db2.vpn.fedoraproject.org (192.168.1.19) 56(84) bytes of data.
64 bytes from 192.168.1.19: icmp_seq=1 ttl=64 time=196 ms
64 bytes from 192.168.1.19: icmp_seq=2 ttl=64 time=181 ms
64 bytes from 192.168.1.19: icmp_seq=3 ttl=64 time=184 ms
64 bytes from 192.168.1.19: icmp_seq=4 ttl=64 time=186 ms
So each request from an app server in phx to the database or to another
app will be 200x faster to set up than from an app server at tummy and
nearly 1000x faster to set up than telia. If we deploy apps at telia it
will be essential to minimize the number of requests if we want to keep
things fast.
-Toshio
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