Hello, I just made some quick test to compare the performance of the trunk current vde_switch against the new one in the rd235 tree.
trunk: Sent 500000 packets in 5 seconds, Bandwidth: 198 MB/s - out of order: 335, lost: 539 Sent 500000 packets in 5 seconds, Bandwidth: 197 MB/s - out of order: 688, lost: 909 Sent 500000 packets in 5 seconds, Bandwidth: 191 MB/s - out of order: 1071, lost: 1487 Sent 500000 packets in 4 seconds, Bandwidth: 208 MB/s - out of order: 1407, lost: 2155 Sent 500000 packets in 4 seconds, Bandwidth: 206 MB/s - out of order: 1717, lost: 2693 Sent 500000 packets in 5 seconds, Bandwidth: 201 MB/s - out of order: 2088, lost: 3225 branch: Sent 500000 packets in 3 seconds, Bandwidth: 261 MB/s - out of order: 0, lost: 104 Sent 500000 packets in 3 seconds, Bandwidth: 259 MB/s - out of order: 0, lost: 160 Sent 500000 packets in 3 seconds, Bandwidth: 262 MB/s - out of order: 0, lost: 298 Sent 500000 packets in 3 seconds, Bandwidth: 260 MB/s - out of order: 0, lost: 375 Sent 500000 packets in 3 seconds, Bandwidth: 260 MB/s - out of order: 0, lost: 448 Sent 500000 packets in 3 seconds, Bandwidth: 259 MB/s - out of order: 0, lost: 516 As expected, out of order frames went away. Moreover, packet loss is almost 6 times lower, and bandwidth is increased of more than 25%. Also, I have been using the "experimental" switch for a couple of weeks now, and noticed no particular issue. I was trying to figure out if performance can get any better, maybe introducing some per-port egres FIFOs to further decrease packet loss, all due to write returning -EWOULDBLOCK. Attached code (GPL2) is a small & simple broadcast frame based test tool which Francesco Apollonio and I quickly coded in parallel while experimenting gobby. It has also revealed some performance regression in my new wirefilter2 that I need to fix. :( Greetings, -- Daniele
test_switch.tgz
Description: GNU Unix tar archive
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