On 10/26/10 11:06 AM, [email protected] wrote: > On Mon, 25 Oct 2010 17:03:21 -0400 > Eric Chris Garrison <[email protected]> wrote: > >> > It could very well be firewall-related, it could be causing >> > fragmenting and causing rx to retransmit. > If you get a packet dump and are willing to share with the people here, > we may be able to give you more information on what is being slow.
I have a dump I could share, but don't want to post it publicly. If someone from the list would like to look at a wireshark capture (taken during a slow transfer), email me directly. The analysis of the wireshark capture is this: [r...@rfs4 ~]# dumpcap -w /tmp/ecg1.dumpcap -a duration:60 File: /tmp/ecg1.dumpcap Packets: 201081 Packets dropped: 28064 [r...@rfs4 ~]# capinfos /tmp/ecg1.dumpcap File name: /tmp/ecg1.dumpcap File type: Wireshark/tcpdump/... - libpcap File encapsulation: Ethernet Number of packets: 201081 File size: 202985493 bytes Data size: 199768173 bytes Capture duration: 59.619958 seconds Start time: Mon Oct 25 17:18:45 2010 End time: Mon Oct 25 17:19:45 2010 Data rate: 3350692.94 bytes/s Data rate: 26805543.53 bits/s Average packet size: 993.47 bytes > Also, iperf should be able to give you more statistics than just > bandwidth. Packet loss? Latency? iperf is blocked between the campuses, it seems, but between two machines (which also have the same slowness) on the same campus, I get this: [r...@rfs1 init.d]# iperf -c rfs4 -p 13713 ------------------------------------------------------------ Client connecting to rfs4, TCP port 13713 TCP window size: 64.0 KByte (default) ------------------------------------------------------------ [ 3] local 129.79.43.68 port 33239 connected with 129.79.43.70 port 13713 [ 3] 0.0-10.0 sec 1.07 GBytes 920 Mbits/sec So, nothing dropped for a straight iperf test at almost full bandwidth, but over 10% dropped at 30Mb/sec for AFS vos moves. > You have still not said what version of OpenAFS this is... various > versions have better or worse RX performance. We're currently running openafs-server-1.4.11-1.1.1 on all servers. Thanks, Chris _______________________________________________ OpenAFS-info mailing list [email protected] https://lists.openafs.org/mailman/listinfo/openafs-info
