Julian Elischer wrote:
anyone who has commands and args for their favourite
thing the'd like me to test... send it in..
so far using ttcp I have seem no measureable difference.
but I have more tests to do of course..
for example throughput with small packets with ttcp (KB/Sec)....
x VIMAGE_GLOBALS
+ NO_VIMAGE_GLOBALS
+-----------------------------------------------------------------+
| + xx |
| + xxx + |
| + xxx x ++++ |
| x + x + + xxxxxxx +++++ |
|x + ++ xx xxx + ++++xxx x x x +++++ ***xxxxx ++++++++|
| |_____________A______M______| |
| |________________AM________________| |
+-----------------------------------------------------------------+
N Min Max Median Avg Stddev
x 40 48016.01 57361.32 56268.06 54915.582 2554.0133
+ 40 48999.66 59646.59 56261.58 56086.798 3119.1782
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as I said before mst of my tests have shown no real change but this
one has the most change I've seen.. it's 160 byte udp packets sent
between two identical machines (both using the same kernel each time).
x VIMAGE_GLOBALS
+ NO_VIMAGE_GLOBALS
+-----------------------------------------------------------------+
| + + ++ xx x x |
| + + ++ +x++x +xx x x |
| + + +++ + +*+**x+xxxx x |
| + +++ +++x*++*+**x*x*xx x x x |
| + +*+++++x**+*+**x*x*x*xx x x xx |
| ++++*++++****+*+**x*x****x xxxx xxx |
| + + xx + ++++*++*+****+***********x*xxxxx xxxx x|
|+ +*+++ xx++*+*+*+****+****************x***x*xxx*xx x xx x|
| |__________A__________| |
| |_________A________| |
+-----------------------------------------------------------------+
N Min Max Median Avg Stddev
x 150 10175.11 11292.11 10763.80 10760.77 200.92124
+ 150 10075.64 11019.12 10591.68 10580.059 172.29227
Difference at 95.0% confidence
-180.711 +/- 42.3572
-1.67935% +/- 0.393626%
(Student's t, pooled s = 187.155)
this one showed a 1.7% slowdown
where the one above showed a half percent speedup
(but not considered significant).
The first one shown above was TCP with 1500 byte packets on bge 1G
interfaces..
more test ideas appreciated...
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