Glance Tool usage to get CPU utilization on Server

-
Glance:
Glance is the best tool for checking memmory usage, as it provides the complete information.
The various tools report different numbers because they disagree about which regions to report as part of the size and how to count shared memory regions.

We can also obtain CPU Utilization and Disk Utilization as shown in the output.
$ glance --h
Usage: glance [-?|-h|-g|-A|-c|-m|-d|-i|-u|-w|-l|-t|-a|-N|-T|-H]
              [-j interval] [-nice nice_value] [-nosort] [-lock]
              [-p [dest_device]] [-f dest_file] [-maxpages num_pages]
              [-no_fkeys]
              [-advis[eo]r_off | -advis[eo]r_only] [-iterations count]
              [-bootup] [-syntax filename]
              [-aos filename]
              [-all_trans] [-all_instances]


Command: glance –j 60 –iterations 100 –maxpages 100

Press s and Enter PID.
Press p to Print the Result
Press c for continuous printing.
Press f to store to a file
Enter file name:
The results start printing.

Output Sample:

B3694A GlancePlus C.04.50.00    06:06:48 <Server>    sun4u   Current  Avg  High
-------------------------------------------------------------------------------
CPU  Util                                                     |  1%    1%    1%
Disk Util                                                     |  0%    0%    0%
Mem  Util   SUUUUUUUUUUUU                                     | 27%   27%   27%
Swap Util   UUUURRRRRRR                                       | 21%   21%   21%
-------------------------------------------------------------------------------
Resources PID:  1703, java            PPID:      1 User: noaccess
--------------------------------------------------------------------------------
CPU Usage (util):      0.1        Block Reads    :        0        
User CPU        :      0.0        Block Writes   :        0       
System CPU      :      0.0        Total IO Bytes :      0kb       
Priority        :       59        Data VSS       :   23.8mb       
Nice Value      :       20        Stack VSS      :     80kb       
Forced CSwitch  :        5        Total VSS      :  293.7mb       
Volunt CSwitch  :     1082        Total RSS      :   91.5mb       
Blocked On      :    SLEEP        System Calls   :      627       
Signals Recd    :        0        Threads Total  :       31       
Major Faults    :        0        Proc Start Time Mon Aug 17 22:27:05 2009       
Minor Faults    :        0                                        
      C - cum/interval toggle   % - pct/absolute toggle

Argv1: org.apache.catalina.startup.Bootstrap

Cmd  : /usr/jdk/instances/jdk1.5.0/bin/java -server -XX: ……

                                                                 Page 1 of 1


How to extract the CPU Util from Glance output.

CPU Monitoring sample perl program

#open and parse file to get current CPU usage
open (INPUTFILE, "filename.gl") or die "can not open Input File:$!";
open (OUTFILE, ">cpu_app.txt") or die "can not open Output File:$!";

while ($line = <INPUTFILE>)
{
           
            # CPU  Util                                                     |  1%    1%    1%

            if ($line =~ /CPU  Util   .*?(\d+.*?)%\s+/)
            {
           $value = "$1";
           
           print OUTFILE "$value";
           print OUTFILE "\n";
        }

}
close(INPUTFILE);
close(OUTFILE);

print "\n DONE";

The same perl program can be modified to get Disk Util, Mem Util by changing the Regular Expression.

Memory Report can be obtained by pressing m after entering PID.

B3694A GlancePlus C.04.50.00    02:14:06 <Server>    sun4u                                                                  Current  Avg  High
----------------------------------------------------------------------------------------------------------------------------------------------
CPU  Util   U                                                                                                                |  1%    1%    1%
Disk Util                                                                                                                    |  0%    0%    0%
Mem  Util   S SU                                                       U                                                     | 54%   54%   54%
Swap Util   U                      UR                        R                                                               | 45%   45%   45%
----------------------------------------------------------------------------------------------------------------------------------------------
                                                                MEMORY REPORT                                                     Users=   22
Event         Current   Cumulative   Current Rate   Cum Rate   High Rate
--------------------------------------------------------------------------------
Page Scans          0            0         0.0        0.0         0.0
Page Faults       375          375       312.5      312.5       312.5
Paging Requests     0            0         0.0        0.0         0.0
Paged In          0kb          0kb         0.0        0.0         0.0
Paged Out         0kb          0kb         0.0        0.0         0.0
Swap In             0            0         0.0        0.0         0.0
Swap Out            0            0         0.0        0.0         0.0
Swap Bytes In     0kb          0kb         0.0        0.0         0.0
Swap Bytes Out    0kb          0kb         0.0        0.0         0.0
Phys Mem  :  16.0gb   User Mem :   8.2gb   Sys Mem  :   407mb
Avail Mem :  15.6gb   Free Mem :   7.4gb   Buf Cache:     9mb

Comments

Post a Comment

Popular posts from this blog

How to use a value between two different threads in Jmeter

-
Image
How to use a value between two different threads: Let us see how we can use the extracted value in one thread can be used in a different thread: As shown below we have Two threads (Thread Group – 1 and Thread Group -2). Under Thread Group -1 we have a HTTP Request where we extracted Request_Id and Session_Id. In our example we will use the same Ids in Thread Group -2 We have BeanShell PostProcessor to log the output of the variables in the output log. The Lines in the both BeanShell is as below: log.info("Request Id in Thread 1 = " + "${Request_Id}"); log.info("Session Id in Thread 1 = " + "${Session_Id}"); Now if we run the Script we get the below output: As we see the values of both the IDs are not passed to Thread Group-2. Now we will add few lines in the BeanShell PostProcessor as below and run again: ${__setProperty(Request_Id,"${Request_Id}")}; ${__setProperty(Session_Id,"${Session_Id}")};
Read more

Steps to Analyze AWR Report in Oracle

-
Image
Steps to Analyze AWR Report in Oracle AWR -   Automatic   workload repository is a collection of persistent   system performance   statistics   owned by SYS. It resides in SYSAUX   tablespace . By default snapshot are generated once every 60 min and maintained for 7 days . Each snapshot has a unique ID know as "snap_id". Snapshot detail can be found in " dba_hist_snapshot " view.   If we have Database performance issue and not the Database machine, then AWR Report is the place to look at. AWR is not used for real-time performance monitoring like the v$ tables. It is used for historical analysis of performance. AWR complements, but doesnot replace real-time monitoring. Once AWR Report is generated in Oracle, the next task is to analyze it. By going through the AWR Report we can easily solve issues like slow database, high wait events, slow query and many more issues. Even though the report is lengthy, Analyzing or Reading relevant part of AWR Report can
Read more

Correlation and checking in Results

-
Image
Correlation and checking In Previous post we have randomly selected value for depart and arrive. Each Depart and arrive have a outboundFlight and returnFlight field, which changes according to the selected values. For E.g.: When we recorded the script with depart as “London” and arrive as “Paris” the below flight details was recorded accordingly to the selection.      /*web_submit_form("reservations.pl_2",          "Snapshot=t5.inf",          ITEMDATA,          "Name=outboundFlight", "Value=241;97;03/28/2014", ENDITEM,          "Name=returnFlight", "Value=422;102;03/29/2014", ENDITEM,          "Name=reserveFlights.x", "Value=26", ENDITEM,          "Name=reserveFlights.y", "Value=8", ENDITEM,          LAST); */ As we see above the outboundFlight and returnFlight is hard coded and needs to be correlated according to the selected value. So inserting the c
Read more