17
txqueuelen
•
Regulates the size of the queue between the IP layer and
the Ethernet layer
•
May increase the throughput if we find optimal values
•
But may increase duplicate ACKs (Y. T Li)
383
331.67
396.67
299.33
375
339.67
430.33
Avg
352.57
386
337
407
243
385
281
429
tqueuelen=10000
368.71
380
310
396
224
400
437
434
tqueuelen=2000
374
383
348
387
431
340
301
428
tqueuelen=100
avg
HS LP
H TCP
Bic
HS
Fast
S-TCP
Reno
16
Txqueuelen vs
TCP for UFl
4MB window
•
All stacks except S-TCP use txqueuelen=100 as default
•
S-TCP uses txqueuelen=2000 by default
•
Tests showed these were reasonable choices