cpu scheduling in Linux is not nice ?

[mingx98]

anyone think so ?
1 , I can't get wio percentage with TOP,
2 when do a heavy IO task, cpu is difficult to
release

any one has same experience or view point aboot this ?

Thanks

 

[marsd]

Umm.
How about some details on this? What are you running, what is your hardware like, etc..I don't notice any resource
hogging or abnormally long resource waits on any
of the servers or workstations at my POB. Maybe your experience is not typical. Or maybe it is flamebait.

There are good books explaining the system i/o structs
and calls internal to the kernel: "Linux Kernel Internals"
from addison-wesley by a group of euro programmers is ext-
remely decent for the 2.0+kernels.

 

[ifincham]

Hi,

Have you looked at the 'nice' command ? This allows you to alter the priority of tasks so that they can be given more or less priority. The default priority is zero and you can change it to plus +20 to -19 (if I remember correctly!). For example : 'nice -n -15 /usr/sbin/sendmail -q &'

See 'info nice' for full information as the man page doesn't say much.

Rgds