04-09-2013
Quote:
Originally Posted by
Corona688
The kernel's job, other than managing hardware, is mostly to stay out of the way while the application programs run. In most circumstances, the kernel spends next to no time running. There's only so far you can go with a 'hyper performance kernel' to make it actually faster.
You could do some interesting things with buffering and scheduling to make it more responsive I suppose.
interesting to know, i guess i'll see how things progress, so maybe a new distro it is
Quote:
Originally Posted by
Corona688
It's not like everyone else set out to write 'low performance' kernels, anyway.
very true
thankies again Corona
Last edited by donkey42; 04-09-2013 at 05:22 PM..
Reason: edit
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LEARN ABOUT OSF1
unix_master
unix_master(9r) unix_master(9r)
NAME
unix_master - General: Forces execution onto the master CPU
SYNOPSIS
void unix_master(
void );
ARGUMENTS
None
DESCRIPTION
The unix_master routine forces execution of the kernel thread onto the master CPU (also called the boot CPU). In other words, unix_master
binds the kernel thread to the master CPU. To release the kernel thread from the bind to the master CPU, call the unix_release routine. You
can make recursive calls to unix_master as long as you make an equal number of calls to unix_release.
The unix_master routine provides another way besides the simple and complex lock routines to make a kernel module symmetric multiprocessing
(SMP) safe. Although calling unix_master is not optimal for performance on an SMP CPU, it does provide third-party kernel module writers
with an easy way to make their modules SMP safe without using the lock routines.
NOTES
Device drivers should not directly call the unix_master and unix_release routines. One exception to this recommendation is when you want a
device driver's kernel threads to run only on the master CPU. This situation occurs when your driver creates and starts its own kernel
threads and you set the d_funnel member of the associated dsent structure to the value DEV_FUNNEL. In this case, each kernel thread must
call unix_master once to ensure that the kernel thread runs only on the master CPU. Remember to make a corresponding call to unix_release.
CAUTIONS
To avoid deadlock, do not call the unix_master routine under the following circumstances: When holding a simple lock In the driver's inter-
rupt service routine
RETURN VALUES
None
SEE ALSO
routines: unix_release(9r)
unix_master(9r)