Bulk Throughput Measurements - TRIUMF
Bulk Throughput Measurements | Bulk Throughput Simulation | Windows vs. streams | Effect of load on RTT and loss | Bulk file transfer measurements
more /proc/sys/net/core/wmem_max = 65535 more /proc/sys/net/core/rmem_max = 65535 more /proc/sys/net/core/rmem_default = 65535 more /proc/sys/net/core/wmem_default = 65535The window buffer sizes on pharlap are shown below:
ndd /dev/tcp tcp_max_buf = 4194304 ndd /dev/tcp tcp_cwnd_max = 2097152 ndd /dev/tcp tcp_xmit_hiwat = 16384 ndd /dev/tcp tcp_recv_hiwat = 24576The ping response from SLAC to TRIUMF was min/avg/max (std)= 75/82/641 (7 msec.) The pipechar from SLAC to TRIUMF was also recorded. Andrew Daviel of TRIUMF reports: there is a bottleneck from UBC to CA*Net described to us by Dennis.OReilly@ubc.ca as "The ATM PVC from UBC to BCNET/CA*net3 is only 22Mbps" and "The existing GIGAPOP router at BCNET is not wire speed." The pipechar from TRIUMF SLAC shows this.
The iperf TCP throughput performance (seen below) is disappointing with
maxima (the top 10% of the measurements) of about 16Mbits/s.