Gaurav Dhiman wrote:
On 9/18/06, Tharindu Rukshan Bamunuarachchi <tharindunix@xxxxxxxxx>
wrote:
I could successfully increase HZ value to 2000. After I increased HZ
to 4000 and kernel freeze at follwoing point ....
........
........
Total of 4 processors activated (17498.11 BogoMIPS).
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 pin1=2 pin2=-1
I think, by such a high value for HZ, you are not allowing the system
to do anything usefull except handling timer interrupts. At this freq,
kernel will only keep on handling the timer interrupts and will not be
able to give attention to user processes, i mean non-interrupt conext
code, hence it gives a feeling that sytem is hung, where as system is
busy in handling only and only timer interrupts.
regards,
Gaurav
Any Idea ....???
--
Tharindu Rukshan Bamunuarachchi
all fabrications are subject to decay
--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive: http://mail.nl.linux.org/kernelnewbies/
FAQ: http://kernelnewbies.org/faq/
Why is it that? Because if you set HZ to 4000, you are calling the
scheduler each 250 microsecs... This should be quite enough to do
context switching and scheduler calculations (which I have read that are
at most in the range of 50 microsecs...
Miguel Ángel
----------------------------------------- PLEASE NOTE -------------------------------------------
This message, along with any attachments, may be confidential or legally privileged.
It is intended only for the named person(s), who is/are the only authorized recipients.
If this message has reached you in error, kindly destroy it without review and notify the sender immediately.
Thank you for your help.
µSysCom uses virus scanning software but excludes any liability for viruses contained in any attachment.
------------------------------------ ROGAMOS LEA ESTE TEXTO -------------------------------
Este mensaje y sus anexos pueden contener información confidencial y/o con derecho legal.
Está dirigido únicamente a la/s persona/s o entidad/es reseñadas como único destinatario autorizado.
Si este mensaje le hubiera llegado por error, por favor elimínelo sin revisarlo ni reenviarlo y notifíquelo inmediatamente al remitente. Gracias por su colaboración.
µSysCom utiliza software antivirus, pero no se hace responsable de los virus contenidos en los ficheros anexos.
--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive: http://mail.nl.linux.org/kernelnewbies/
FAQ: http://kernelnewbies.org/faq/
