R: High load average but low cpu (xenomai can be the explanation?)

R: High load average but low cpu (xenomai can be the explanation?)

[dibacco]

It is an AgentX subagent, it does a lot of things like accessing the hardware, 
handling messages from the main snmp agent received from an unix socket, 
writing files on jffs2 partition, polling hardware for alarms.
If I kill it, 
the load goes down. Anyway the subagent only takes 2-3% of the CPU..

Thank 
you,
Antonio.



>Da: Daniele.Bosi@mta.it
>
>Can you give us some more details 
about your app?
>Is it multithread or single process?
>What do the process do?

>
>Bye Daniele
>
>
>
>-----Messaggio originale-----
>Da: linuxppc-dev-
bounces+daniele.bosi=mta.it@lists.ozlabs.org [mailto:linuxppc-dev-
bounces+daniele.bosi=mta.it@lists.ozlabs.org] Per conto di dibacco@libero.it

>Oggetto: High load average but low cpu (xenomai can be the explanation?)
>

>Hi,
>
>I have an MPC880 @133MHz. If I look into the load (with uptime) I get

>values around 3.0 but my CPU is always under 5 percent (top). How could I

>explain this? I'm using linux 2.6.19 with xenomai but no xenomai application 
is
>running at all. I have a cramfs on a nor flash. What could be the problem? 
If I
>kill the process I developed the average load goes down.
>
>Thank you,

>Adi
>_______________________________________________
>Linuxppc-dev mailing 
list
>Linuxppc-dev@lists.ozlabs.org
>https://lists.ozlabs.org/listinfo/linuxppc-
dev
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>https://lists.ozlabs.org/listinfo/linuxppc-dev

>

R: High load average but low cpu (xenomai can be the explanation?)

[Bosi Daniele]

I suggest you to take a look at the meaning of the data showed by "/proc/lo=
adavg".

See:
http://www.luci.org/luci-discuss/200210/msg00055.html

for more details.

In my opinion your loadavg of 3.0 means only that in your application there=
 is an average of 3 task waiting for running on the CPU. This in general do=
esn't mean that the CPU load must be 100 %.

Maybe there should be some scheduler issues.

If you take a look into your app sources maybe you can know more about what=
 happens.


-----Messaggio originale-----
Da: dibacco@libero.it [mailto:dibacco@libero.it]
Inviato: marted=EC 22 settembre 2009 10.15
A: Bosi Daniele; linuxppc-dev@lists.ozlabs.org
Oggetto: R: High load average but low cpu (xenomai can be the explanation?)

It is an AgentX subagent, it does a lot of things like accessing the hardwa=
re,
handling messages from the main snmp agent received from an unix socket,
writing files on jffs2 partition, polling hardware for alarms.
If I kill it,
the load goes down. Anyway the subagent only takes 2-3% of the CPU..

Thank
you,
Antonio.



>Da: Daniele.Bosi@mta.it
>
>Can you give us some more details
about your app?
>Is it multithread or single process?
>What do the process do?

>
>Bye Daniele
>
>
>
>-----Messaggio originale-----
>Da: linuxppc-dev-
bounces+daniele.bosi=3Dmta.it@lists.ozlabs.org [mailto:linuxppc-dev-
bounces+daniele.bosi=3Dmta.it@lists.ozlabs.org] Per conto di dibacco@libero=
.it

>Oggetto: High load average but low cpu (xenomai can be the explanation?)
>

>Hi,
>
>I have an MPC880 @133MHz. If I look into the load (with uptime) I get

>values around 3.0 but my CPU is always under 5 percent (top). How could I

>explain this? I'm using linux 2.6.19 with xenomai but no xenomai applicati=
on
is
>running at all. I have a cramfs on a nor flash. What could be the problem?
If I
>kill the process I developed the average load goes down.
>
>Thank you,

>Adi
>_______________________________________________
>Linuxppc-dev mailing
list
>Linuxppc-dev@lists.ozlabs.org
>https://lists.ozlabs.org/listinfo/linuxppc-
dev
>_______________________________________________
>Linuxppc-dev mailing list

>Linuxppc-dev@lists.ozlabs.org
>https://lists.ozlabs.org/listinfo/linuxppc-dev

>

R: High load average but low cpu (xenomai can be the explanation?)

[Bosi Daniele]

Can you give us some more details about your app?
Is it multithread or single process?
What do the process do?

Bye Daniele



-----Messaggio originale-----
Da: linuxppc-dev-bounces+daniele.bosi=3Dmta.it@lists.ozlabs.org [mailto:lin=
uxppc-dev-bounces+daniele.bosi=3Dmta.it@lists.ozlabs.org] Per conto di diba=
cco@libero.it
Inviato: luned=EC 21 settembre 2009 17.13
A: linuxppc-dev@lists.ozlabs.org
Oggetto: High load average but low cpu (xenomai can be the explanation?)

Hi,

I have an MPC880 @133MHz. If I look into the load (with uptime) I get
values around 3.0 but my CPU is always under 5 percent (top). How could I
explain this? I'm using linux 2.6.19 with xenomai but no xenomai applicatio=
n is
running at all. I have a cramfs on a nor flash. What could be the problem? =
If I
kill the process I developed the average load goes down.

Thank you,
Adi
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Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev