[En-Nut-Discussion] Heave load will harm the system?

[ivesworking]

the quesion still go back to the original point, as u say atmega128 will 
still run at idle, my question is if the whole MCU are processing without 
idle thread.
for my case, i run xml phrasing when a http request been send from the pc, i 
using some http test tools to load the mcu.
i was infront the development board when i do the 1min load test, and i feel 
a bit warm the normal after i do the load test,
i was continue doing the test after i left the office using remote desktop, 
the test is the same, but this time i load the MCU a bit longer, 7 min,
it work fine on the first 3 min, the suddenly all the traffic drop to 0, i 
am not sure about the mcu burn out or just a system hang because i still 
remote controlling my pc,
i will report later see is a system hang or the worse case.
idle case and the load case, the mcu temperature is different.


WFLOH
PS: i like side track question.

below are some of my test result using cgi which need little processing 
speed, maybe some one will interested
Receiving speed (kbits/sec)

      Profile
     0:00:00- 0:00:10
     0:00:10- 0:00:20
     0:00:20- 0:00:30
     0:00:30- 0:00:40
     0:00:40- 0:00:50
     0:00:50- 0:01:00
     Total

      20connection
     130
     201
     237
     184
     152
     175
     180

      4connection
     252
     206
     245
     272
     264
     242
     247

      2connection
     307
     276
     305
     259
     306
     285
     289




Response time, sec

      Name
     Time
     0:00:00- 0:00:10
     0:00:10- 0:00:20
     0:00:20- 0:00:30
     0:00:30- 0:00:40
     0:00:40- 0:00:50
     0:00:50- 0:01:00

      20connection
     Min
     0.02
     0.02
     0.02
     0.02
     0.02
     0.02

      4connection
     Min
     0.02
     0.02
     0.02
     0.02
     0.02
     0.02

      2connection
     Min
     0.02
     0.02
     0.02
     0.02
     0.02
     0.02

      20connection
     Avg
     0.2
     0.19
     0.2
     0.25
     0.29
     0.26

      4connection
     Avg
     0.15
     0.2
     0.2
     0.14
     0.16
     0.17

      2connection
     Avg
     0.06
     0.07
     0.07
     0.08
     0.07
     0.08

      20connection
     Avg90
     0.9
     0.91
     0.96
     1.08
     1.13
     1.03

      4connection
     Avg90
     0.85
     0.98
     1.1
     0.77
     0.82
     1.08

      2connection
     Avg90
     0.29
     0.36
     0.34
     0.44
     0.42
     0.45

      20connection
     Max
     3.05
     4.08
     4.03
     4.04
     3.03
     3.2

      4connection
     Max
     5.05
     4.0
     6.98
     3.08
     4.06
     5.99

      2connection
     Max
     2.11
     2.08
     2.03
     2.84
     3.1
     3.04



this is all program generate

----- Original Message ----- 
From: "Harald Kipp" <harald.kipp at egnite.de>
To: "Ethernut User Chat (English)" <en-nut-discussion at egnite.de>
Sent: Tuesday, February 28, 2006 7:38 PM
Subject: Re: [En-Nut-Discussion] Heave load will harm the system?


>
> At 13:12 28.02.2006 +0000, you wrote:
>>running a webserver on the atmega128, and i use performance tools to load 
>>the system, if i continue load the server, will the mcu burn for overheat? 
>>anyone have experience on this?
>
> The ATmega128 is running full speed all the time. If all
> threads are waiting for an event, the idle thread will
> run. This can last for years without problem or any
> heating up.
>
> The Ethernet Controller is a different story, as the
> PHY part contains an analog power circuit. It may heat
> up a bit during heavy Ethernet traffic. But there is
> no danger of overheating of the 10 MBit Controller used
> on Ethernut 1. The 100 Mbit Controller on Ethernut 2
> becomes really warm, even in idle state. The Controller
> on Ethernut 3 shows, that this is not mandantory for all
> 100 MBit PHYs. It stays relatively cool.
>
> Harald
>
> P.S. I liked this question. Wonder why it hadn't been asked
> before.
>
>
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