At 12:50 AM 11/21/2006, Mike Tancsa wrote:
The table is also up at http://www.tancsa.com/blast.html which might
be easier to read
Decided to test with RELENG_4 as a comparison. Quite a difference.
With polling and fast forwarding on, I can use 2 routers to blast
through at almost 1Mpps. Even with ipfw loaded, it performs as
RELENG_6 and above does without ipfw. Updated stats in the table at
the above URL.
One other aspect I have not looked at yet are some of the compile
time tunables for em. Looking at the stats from the dual port em nic
below, does anyone have any suggestions on what to adjust ? This is
a PCIe dual port Pro 1000 PT.
em0: Excessive collisions = 0
em0: Symbol errors = 0
em0: Sequence errors = 0
em0: Defer count = 0
em0: Missed Packets = 271924
em0: Receive No Buffers = 1662344
em0: Receive Length Errors = 0
em0: Receive errors = 0
em0: Crc errors = 0
em0: Alignment errors = 0
em0: Carrier extension errors = 0
em0: RX overruns = 0
em0: watchdog timeouts = 0
em0: XON Rcvd = 0
em0: XON Xmtd = 149
em0: XOFF Rcvd = 0
em0: XOFF Xmtd = 272047
em0: Good Packets Rcvd = 175954557
em0: Good Packets Xmtd = 28676200
em1: Excessive collisions = 0
em1: Symbol errors = 0
em1: Sequence errors = 0
em1: Defer count = 0
em1: Missed Packets = 58484
em1: Receive No Buffers = 56645
em1: Receive Length Errors = 0
em1: Receive errors = 0
em1: Crc errors = 0
em1: Alignment errors = 0
em1: Carrier extension errors = 0
em1: RX overruns = 0
em1: watchdog timeouts = 0
em1: XON Rcvd = 0
em1: XON Xmtd = 589
em1: XOFF Rcvd = 0
em1: XOFF Xmtd = 59073
em1: Good Packets Rcvd = 28676216
em1: Good Packets Xmtd = 175954480
---Mike
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