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 XFREE86
sag
sag(1) User Commands sag(1)NAME
sag - system activity graph
SYNOPSIS
sag [-e time] [-f file] [-i sec] [-s time] [-T term] [-x spec] [-y spec]
DESCRIPTION
The sag utility graphically displays the system activity data stored in a binary data file by a previous sar(1) run. Any of the sar data
items may be plotted singly or in combination, as cross plots or versus time. Simple arithmetic combinations of data may be specified. sag
invokes sar and finds the desired data by string-matching the data column header (run sar to see what is available). The sag utility
requires a graphic terminal to draw the graph, and uses tplot(1) to produce its output. When running Solaris 2.x and OpenWindows, perform
the following steps:
1. Run an "xterm" as a Tektronics terminal: prompt# xterm -t
2. In the "xterm" window, run sag specifying a tek terminal: prompt# sag -T tek options
OPTIONS
The following options are supported and passed through to sar (see sar(1)):
-e time Select data up to time. Default is 18:00.
-f file Use file as the data source for sar. Default is the current daily data file /usr/adm/sa/sadd.
-i sec Select data at intervals as close as possible to sec seconds.
-s time Select data later than time in the form hh[:mm]. Default is 08:00.
-T term Produce output suitable for terminal term. See tplot(1) for known terminals. Default for term is $TERM.
-x spec x axis specification with spec in the form:
name[op name]...[lo hi]
name is either a string that will match a column header in the sar report, with an optional device name in square brackets, for
example, r+w/s[dsk-1], or an integer value. op is + - * or / surrounded by blank spaces. Up to five names may be specified.
Parentheses are not recognized. Contrary to custom, + and - have precedence over * and /. Evaluation is left to right. Thus,
A/A+B*100 is evaluated as (A/(A+B))*100, and A+B/C+D is (A+B)/(C+D). lo and hi are optional numeric scale limits. If unspecified,
they are deduced from the data.
Enclose spec in double-quotes ("") if it includes white space.
A single spec is permitted for the x axis. If unspecified, time is used.
-y spec y axis specification with spec in the same form as for -x. Up to 5 spec arguments separated by a semi-colon (;) may be given for
-y. The -y default is:
-y"%usr0100;%usr+%sys0100;%usr+%sys+%wio0100"
EXAMPLES
Example 1: Examples of the sag command.
To see today's CPU utilization:
example$ sag
To see activity over 15 minutes of all disk drives:
example$ TS=`date +%H:%M`
example$ sar -o /tmp/tempfile 60 15
example$ TE=`date +%H:%M`
example$ sag -f /tmp/tempfile -s $TS -e $TE -y "r+w/s[dsk]"
FILES
/usr/adm/sa/sadd daily data file for day dd
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWaccu |
+-----------------------------+-----------------------------+
SEE ALSO sar(1), tplot(1), attributes(5)SunOS 5.10 4 Mar 1998 sag(1)