Hi..,
my dout is a solaris server is having 16 cpu's.
in tht one cpu running some error process, accupaying more space.
I wanna down tht particular CPU only with out interrupting the other 15
CPU's. how can i do this. is there any command for this ?? (5 Replies)
hi,
i want to know cpu utilizatiion per process per cpu..for single processor also if multicore in linux ..to use these values in shell script to kill processes exceeding cpu utilization.ps (pcpu) command does not give exact values..top does not give persistant values..psstat,vmstat..does njot... (3 Replies)
Hello Friends,
On one of my Solaris 10 box, CPU usage shows 100% using "sar", "vmstat". However, it has 4 CPUs and prstat and glance are not showing enough processes to justify high CPU utilization.
=========================================================================
$ prstat -a
... (4 Replies)
Hi,
I am a weblogic Admin
I our env there are 5 servers running in one Solaris 10 Sparc machine.
But when i tried for process status using <top> command
I got the following output
load averages: 1.75, 2.18, 2.12; up 134+08:28:49
22:24:21
79 processes: 77 sleeping, 1 running,... (1 Reply)
We have a single threaded application which is restricted by CPU usage even though there are multiple CPUs on the server, hence leading to significant performance issues. Is it possible to merge / combine multiple CPUs at OS level so it appear as a single CPU for the application? (6 Replies)
Hi All,
It may be a n00b question, but i really want to know , How Entitled Capacity is less and Used CPU is more when there is no Free CPU is available in the managed system.
I have 5LPARs in a MS with Dual VIO.
Managed System CPU details
Available: 0.20
Assigned to partitions: 15.80... (11 Replies)
I read that Entitlement CPU should be set to max 75% compare to Virtual CPU. May I know the reason.
I have set the Entitlement CPU = Virtual CPU on AIX . It works fine .
Can you help to understand. (1 Reply)
Discussion started by: gabhanes
1 Replies
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)