which version of Linux are you using?
I dont feel that Linux is the culprit. Instead db2sync seems to be. Try running db2sync on freebsd/windows and look for a change. If the same problem persists then file a bug . I feel the source code has been tweaked up with or the memory allocation messes up too much.
Hope this helps,
Regards,
Gaurav.
it is 2.6.16.60-0.54.5-smp
I think I forgot to add
Suse 10 Ent SP3
Is there a way I can assign processes to different processors? I know in windows xp you can set process affinity, and wondered if there is a *nix equivelant. (2 Replies)
I am running solaris 9 on a SUn 480r. It is running SAS statistical software, these processes in full flow normally run at about 50-60% cpu (theres nothing else really running on the box) this is fine, and the SAS jobs get run nice and quick. However over the last few weeks everytime a SAS job is... (1 Reply)
Hi all
please can any body please suggest me how to bind a process to a particular
CPU on unix machine.
i have a unix machine with 2 CPUs and i wanna have my process running on
CPU 0.
please suggest. (11 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)
Hello All,
I am preparing a script to capture the processes consuming more CPU.
So is there any way that i can sort & redirect to file only those processes consuming more than 5.0 % using ps command itself.
Regards
Ankit (3 Replies)
Can someone please help me with a script that will help in identifying the CPU & memory usage by a process name, rather than a process id.This is to primarily analyze the consumption of resources, for performance tweaking.
G (4 Replies)
I have a httpd process which uses up 100% cpu. This makes my application to stop working and it just gets hung.
I tried getting the tusc output looks something like this:
# /usr/local/bin/tusc -pl 26516
( Attached to process 26516 ("/opt/hpws22/apache/bin/httpd -d /opt/hpws22/apache -k... (3 Replies)
Discussion started by: chacko193
3 Replies
LEARN ABOUT POSIX
taskset
TASKSET(1) User Commands TASKSET(1)NAME
taskset - set or retrieve a process's CPU affinity
SYNOPSIS
taskset [options] mask command [argument...]
taskset [options] -p [mask] pid
DESCRIPTION
taskset is used to set or retrieve the CPU affinity of a running process given its pid, or to launch a new command with a given CPU affin-
ity. CPU affinity is a scheduler property that "bonds" a process to a given set of CPUs on the system. The Linux scheduler will honor the
given CPU affinity and the process will not run on any other CPUs. Note that the Linux scheduler also supports natural CPU affinity: the
scheduler attempts to keep processes on the same CPU as long as practical for performance reasons. Therefore, forcing a specific CPU
affinity is useful only in certain applications.
The CPU affinity is represented as a bitmask, with the lowest order bit corresponding to the first logical CPU and the highest order bit
corresponding to the last logical CPU. Not all CPUs may exist on a given system but a mask may specify more CPUs than are present. A
retrieved mask will reflect only the bits that correspond to CPUs physically on the system. If an invalid mask is given (i.e., one that
corresponds to no valid CPUs on the current system) an error is returned. The masks may be specified in hexadecimal (with or without a
leading "0x"), or as a CPU list with the --cpu-list option. For example,
0x00000001 is processor #0,
0x00000003 is processors #0 and #1,
0xFFFFFFFF is processors #0 through #31,
32 is processors #1, #4, and #5,
--cpu-list 0-2,6
is processors #0, #1, #2, and #6.
When taskset returns, it is guaranteed that the given program has been scheduled to a legal CPU.
OPTIONS -a, --all-tasks
Set or retrieve the CPU affinity of all the tasks (threads) for a given PID.
-c, --cpu-list
Interpret mask as numerical list of processors instead of a bitmask. Numbers are separated by commas and may include ranges. For
example: 0,5,8-11.
-p, --pid
Operate on an existing PID and do not launch a new task.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
USAGE
The default behavior is to run a new command with a given affinity mask:
taskset mask command [arguments]
You can also retrieve the CPU affinity of an existing task:
taskset -p pid
Or set it:
taskset -p mask pid
PERMISSIONS
A user can change the CPU affinity of a process belonging to the same user. A user must possess CAP_SYS_NICE to change the CPU affinity of
a process belonging to another user. A user can retrieve the affinity mask of any process.
SEE ALSO chrt(1), nice(1), renice(1), sched_getaffinity(2), sched_setaffinity(2)
See sched(7) for a description of the Linux scheduling scheme.
AUTHOR
Written by Robert M. Love.
COPYRIGHT
Copyright (C) 2004 Robert M. Love. This is free software; see the source for copying conditions. There is NO warranty; not even for MER-
CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
AVAILABILITY
The taskset command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.
util-linux August 2014 TASKSET(1)