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)
Hi Experts,
with the help of which command we can see the Number of cpu in a solaris solaris5.10.Also how we know the total disk & free disk space size in this system.
Kind regards
---------- Post updated at 12:25 PM ---------- Previous update was at 12:25 PM ----------
Command... (10 Replies)
I have SunOS and here is the version details
SunOS chfdalsun003 5.10 Generic_138888-03 sun4u sparc SUNW,Sun-Fire-V890
I have couple of questions.
How do i see number of CPU's in the server?
How can i see the Server memory(RAM)? The detail memory information like(total, used, free etc).... (6 Replies)
I want to find number of CPU and number NIC card in Linux server.
I have below content in /proc/cpuinfo. I have from processor 0 - 15. It means, i have 15 similar entries in that file. How many CPU we have on this server? also how do find how many NIC card on this?
processor : 0... (5 Replies)
We are using linux server. We have below script running on the crontab and it send the alert if the cpu usage is above 90%.
My question is, the below script tells the CPU usage for one CPU or all CPU in the server?
sar 1 1 | sed '$!d' | awk '{printf("%d", $8)}' > $SAR_LOG
Please let me... (4 Replies)
root:/>
# lscfg -vp|grep -c -E 'proc.*Processor'
8
root:/>
# lscfg -vpl sysplanar0 | grep -i way
8 WAY PROC CUOD :
8 WAY PROC CUOD :
8 WAY PROC CUOD :
8 WAY PROC CUOD :
8 WAY PROC CUOD :
8 WAY PROC CUOD :
I have this output and need to know how... (3 Replies)
Got two RHEL servers - one real and one virtual/cloud.
Both run apache web server.
When traffic is applied, CPU seems to go quite high on virtual one (20%) but real is not really affected. Worry is that a further increase in traffic will see a problem.
Experience of RHEL is limited. Whats... (2 Replies)
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)
Discussion started by: Dissa
6 Replies
LEARN ABOUT SUSE
getcpu
GETCPU(2) Linux Programmer's Manual GETCPU(2)NAME
getcpu - determine CPU and NUMA node on which the calling thread is running
SYNOPSIS
#include <linux/getcpu.h>
int getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *tcache);
DESCRIPTION
The getcpu() system call identifies the processor and node on which the calling thread or process is currently running and writes them into
the integers pointed to by the cpu and node arguments. The processor is a unique small integer identifying a CPU. The node is a unique
small identifier identifying a NUMA node. When either cpu or node is NULL nothing is written to the respective pointer.
The third argument to this system call is nowadays unused.
The information placed in cpu is only guaranteed to be current at the time of the call: unless the CPU affinity has been fixed using
sched_setaffinity(2), the kernel might change the CPU at any time. (Normally this does not happen because the scheduler tries to minimize
movements between CPUs to keep caches hot, but it is possible.) The caller must be prepared to handle the situation when cpu and node are
no longer the current CPU and node.
VERSIONS
getcpu() was added in kernel 2.6.19 for x86_64 and i386.
CONFORMING TO
getcpu() is Linux specific.
NOTES
Linux makes a best effort to make this call as fast possible. The intention of getcpu() is to allow programs to make optimizations with
per-CPU data or for NUMA optimization.
Glibc does not provide a wrapper for this system call; call it using syscall(2); or use sched_getcpu(3) instead.
The tcache argument is unused since Linux 2.6.24. In earlier kernels, if this argument was non-NULL, then it specified a pointer to a
caller-allocated buffer in thread-local storage that was used to provide a caching mechanism for getcpu(). Use of the cache could speed
getcpu() calls, at the cost that there was a very small chance that the returned information would be out of date. The caching mechanism
was considered to cause problems when migrating threads between CPUs, and so the argument is now ignored.
SEE ALSO mbind(2), sched_setaffinity(2), set_mempolicy(2), sched_getcpu(3), cpuset(7)COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2008-06-03 GETCPU(2)