This may be different for your Unix but for Unbuntu sar(1) you can run:
for today's I/O stats or:
for the I/O stats from the 16th.
The simple thing to look for is if the figures for one volume are worse than the others and may benefit from being moved to a dedicated disk or even onto a striped volume?
Also take a look at:
for network device stats.
The other one to look at is:
and see if the run queue size (runq-sz) gets larger when the I/O stats are at there worse.
hi,
can any one tell me, is there is any way i can check the performance of my solaris 8 os on an Ent 3500. Other than top to check for the top most processes, how to make the calculations with vmstat, iostat, mpstat and nfsstat. Or is there any other tools that i can use?
cheers. (3 Replies)
Hi All
I am looking for a script that would collect statistics in a summarised format.
CPU, Memory,Swap, Wait queue, Run queue and disk activity.
Something that would allow me to profile the environment based on a 1 line output that I could run every 15 min.
Thx
Junaid (1 Reply)
Hi all
The place I work for is about to to place there database server under heavy load for testing and would like the effect recorded as much as possible.
Can anyone point me in the right direction with respect to real time system monitoring. I am aware of of 'sar', vmstat etc and hope to... (2 Replies)
Hello,
I am trying to find a way to view current CPU and disk usage. I used to use nmon which worked fine but since an upgrade to our servers this is no longer available. I have tried to get it reinstalled to no avail!
Are there any other commands you can use within unix which will allow me... (4 Replies)
This is my first post (yes I'm a newbie).... :D
I'm looking for a list of Linux and Unix commands for performance monitoring and a good sight or area on this site that would have man pages and or information on those commands.....
Thanks if anyone can take the time to post..... :cool: (14 Replies)
Hi all,
I am planning to give a presentation on performance measure. I have decided to focus on the commands which are used to know the performance of the server. I have a idea of prstat,vmstat,netstat, and iostat. Could anybody suggest me any other commands which are used for perforamance... (7 Replies)
As I am new to the Unix field, I would like to get the clarification regarding the Filesystem.
The scenario is.. The filesystem (/drbackup) is getting monitored and if it exceeds the threshold, we will receive an alert from it. The issue is that we receive an alert with the description of... (2 Replies)
What tools can I use to look "deeper" into a process to see if the job is actually running or just hanging. What is the best method to accomplish this?
SunOS 5.10 Generic_142900-14 sun4v sparc SUNW,T5240 (2 Replies)
Hi all,
-------------------------
Linux OS Version/Release:
-------------------------
Red Hat Enterprise Linux Server release 5.5 (Tikanga)
Linux <hostname> 2.6.18-194.8.1.el5 #1 SMP Wed Jun 23 10:52:51 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
I have a server that hosts 30+ Oracle... (1 Reply)
Discussion started by: newbie_01
1 Replies
LEARN ABOUT CENTOS
cpupower-set
CPUPOWER-SET(1) cpupower Manual CPUPOWER-SET(1)NAME
cpupower-set - Set processor power related kernel or hardware configurations
SYNOPSIS
cpupower set [ -b VAL ] [ -s VAL ] [ -m VAL ]
DESCRIPTION
cpupower set sets kernel configurations or directly accesses hardware registers affecting processor power saving policies.
Some options are platform wide, some affect single cores. By default values are applied on all cores. How to modify single core configura-
tions is described in the cpupower(1) manpage in the --cpu option section. Whether an option affects the whole system or can be applied to
individual cores is described in the Options sections.
Use cpupower info to read out current settings and whether they are supported on the system at all.
Options--perf-bias, -b
Sets a register on supported Intel processore which allows software to convey its policy for the relative importance of performance
versus energy savings to the processor.
The range of valid numbers is 0-15, where 0 is maximum performance and 15 is maximum energy efficiency.
The processor uses this information in model-specific ways when it must select trade-offs between performance and energy efficiency.
This policy hint does not supersede Processor Performance states (P-states) or CPU Idle power states (C-states), but allows software to
have influence where it would otherwise be unable to express a preference.
For example, this setting may tell the hardware how aggressively or conservatively to control frequency in the "turbo range" above the
explicitly OS-controlled P-state frequency range. It may also tell the hardware how aggressively it should enter the OS requested C-
states.
This option can be applied to individual cores only via the --cpu option, cpupower(1).
Setting the performance bias value on one CPU can modify the setting on related CPUs as well (for example all CPUs on one socket),
because of hardware restrictions. Use cpupower -c all info -b to verify.
This options needs the msr kernel driver (CONFIG_X86_MSR) loaded.
--sched-mc, -m [ VAL ]
--sched-smt, -s [ VAL ]
--sched-mc utilizes cores in one processor package/socket first before processes are scheduled to other processor packages/sockets.
--sched-smt utilizes thread siblings of one processor core first before processes are scheduled to other cores.
The impact on power consumption and performance (positiv or negativ) heavily depends on processor support for deep sleep states, fre-
quency scaling and frequency boost modes and their dependencies between other thread siblings and processor cores.
Taken over from kernel documentation:
Adjust the kernel's multi-core scheduler support.
Possible values are:
0 - No power saving load balance (default value)
1 - Fill one thread/core/package first for long running threads
2 - Also bias task wakeups to semi-idle cpu package for power savings
SEE ALSO cpupower-info(1), cpupower-monitor(1), powertop(1)AUTHORS --perf-bias parts written by Len Brown <len.brown@intel.com>
Thomas Renninger <trenn@suse.de>
22/02/2011 CPUPOWER-SET(1)