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April 20, 2017, at 05:09 PM by 127.0.0.1 -
Changed line 10 from:
http:/docs/nmon16g_JFS.png
to:
http:/docs/nmon16g_JFS_1024.png
April 20, 2017, at 05:09 PM by 127.0.0.1 -
Changed line 10 from:
http:/docs/nmon16g_JFSx.png
to:
http:/docs/nmon16g_JFS.png
April 20, 2017, at 05:09 PM by 127.0.0.1 -
Changed line 10 from:
http:/docs/nmon16g_JFS.png
to:
http:/docs/nmon16g_JFSx.png
April 20, 2017, at 05:06 PM by 127.0.0.1 -
Added lines 8-10:
----
!New for nmon for Linux 16g
http:/docs/nmon16g_JFS.png
December 09, 2016, at 03:13 PM by 127.0.0.1 -
Changed line 19 from:
[++KVM host showing guest CPU use++]
to:
* [++%blue%KVM host showing guest CPU use%%++]
December 09, 2016, at 03:12 PM by 127.0.0.1 -
Changed line 19 from:
!KVM host showing guest CPU use
to:
[++KVM host showing guest CPU use++]
December 09, 2016, at 03:11 PM by 127.0.0.1 -
Added lines 18-19:

!KVM host showing guest CPU use
July 25, 2016, at 04:13 PM by 127.0.0.1 -
Changed line 3 from:
On this webpage you can find
to:
On this webpage you can find
May 20, 2016, at 01:45 PM by 127.0.0.1 -
Changed lines 14-15 from:
to:
http:/docs/nmon16e.png
* Other large bugs were fixed like the very busy large machine crashing nmon.
May 20, 2016, at 01:23 PM by 127.0.0.1 -
Added line 6:
# Also see the nmonchart link on the left hand menu for more graphs using that tool
Added lines 8-14:
----
!New features in the latest nmon for Linux 16f
http:/docs/nmon16f.png

----
!New features in the latest nmon for Linux 16e
January 07, 2016, at 06:09 PM by 127.0.0.1 -
Added lines 8-22:
!New features in the latest nmon for Linux 16b
* Here are the ten Utilisation categories of a model Linux version - user "U" to show them on screen
* The stats are also saved to the nmon files if you add the -U option
http:/docs/nmon16b_Util.gif

* Note nice is user time but at a lower priority (use the nice command).
* Note guest and guest_nice are for KVM host environments and show the guest OSes CPU use.
* Note steal is for a gust OS to show if the CPU is being used to run other Virtual machines.
* Note the irq and softirq are CPU time used for interrupts - I have seen some embedded CPU doing most of the CPU work at interrupt level.

* Small improvements in the Kernel view too
http:/docs/nmon16b_Kernel.gif

----
January 04, 2016, at 12:30 PM by 127.0.0.1 -
Added lines 18-20:
* If you want more Help then stop nmon and run "nmon -h | less"
* Alternatively, read the same output with your brlower using the left-hand Menu "nmon -h" button or \\
Click: [[http://nmon.sourceforge.net/pmwiki.php?n=Site.NmonHelp| nmon -h]]
January 04, 2016, at 12:28 PM by 127.0.0.1 -
Changed lines 145-148 from:
* You can see the big hitters are processes called "yes" and "ncpu" from the nstress tools
to:
* You can see the big hitters are processes called "yes" (I also use "ncpu" from the nstress tools in some screen shots) from the "%CPU Used"
** Note: 100% means using a whole single CPU core thread. If the process has more that 100% then it is obviously multi-threaded.
* "Res" columns are the Resident Set i.e. the parts of the program and its data that is currently in memory.
** "Res Set" is the total. "Res Text" is the program code. "Res Data" is the variable data. "Res Lib" is the libraries it is using but note these are probably shared between many running program.
January 04, 2016, at 12:21 PM by 127.0.0.1 -
Changed lines 172-173 from:
* Click on the nmonchart on the left menu list of this webpage.
* %width=480px% http://nmon.sourceforge.net/docs/pic1.png
to:
* For the complete set of nmonchart Graphs take the left-hand menu link or Click: [[http://nmon.sourceforge.net/pmwiki.php?n=Site.Nmonchart|nmonchart]]
%width=480px% http://nmon.sourceforge.net/docs/pic1.png
January 04, 2016, at 12:18 PM by 127.0.0.1 -
Changed line 173 from:
to:
* %width=480px% http://nmon.sourceforge.net/docs/pic1.png
January 04, 2016, at 12:17 PM by 127.0.0.1 -
Added lines 169-173:
----
!Examples of nmonchart graphs

* Click on the nmonchart on the left menu list of this webpage.
January 04, 2016, at 12:15 PM by 127.0.0.1 -
Added line 65:
*The stats are taken from /proc/cpuinfo and are point in time - i.e. not averages of time to there are either the lower CPU Idle frequency of the higher CPU busy and over clocking frequency and never in between.
January 04, 2016, at 12:12 PM by 127.0.0.1 -
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Added line 18:
Added line 28:
* If you are running on x86 this information is not available and "p" is ignored (actually, not compiled in to the nmon binary).
Changed line 74 from:
* Hit "m" for memory details
to:
* Hit "m" for memory details (lowercase M)
January 04, 2016, at 10:32 AM by 127.0.0.1 -
Added lines 76-80:

'''Virtual Memory Stats'''
* Hit "V" for memory details (uppercase v)
* Note: These are largely Linux Kernel details
http:/docs/nmon16a_VirtualMemory.gif
January 04, 2016, at 10:22 AM by 127.0.0.1 -
Changed lines 105-106 from:
* Here we see the root filesystem is 61% full
to:
* Here we see the root filesystem is 16% full
* Note the increasing trend to large numbers of fake file systems!!
Added line 113:
Changed line 123 from:
* Boring but I hope you get the idea.
to:
* nmon 16a onwards just displays a warning the NFS is not running and covers NFS v2, v3 and v4
January 04, 2016, at 10:19 AM by 127.0.0.1 -
Changed line 114 from:
* It will reappear is network error happen.
to:
* It will reappear if network error happen.
Changed line 122 from:
** NOTE: NEED T GRAB AN UP TO DATE IMAGE
to:
** NOTE: NEED TO GRAB AN UP TO DATE IMAGE OF NFS STATS
January 04, 2016, at 10:18 AM by 127.0.0.1 -
Added line 27:
Added line 36:
Added line 52:
Changed lines 63-68 from:
* 1st "M" = the CPU core threads MHz http:/docs/nmon16a_MHz_1_600.gif

* 2st "M" the CPU cores MHz http:/docs/nmon16a_MHz_2_600.gif

* 3st "M" the CPU cores MHz graphs http:/docs/nmon16a_MHz_3_600.gif
to:
* 1st "M" = the CPU core threads MHz
** http:/docs/nmon16a_MHz_1_600.gif
* 2st "M" the CPU cores MHz
** http:/docs/nmon16a_MHz_2_600.gif
* 3st "M" the CPU cores MHz graphs
** http:/docs/nmon16a_MHz_3_600.gif
Added line 76:
Deleted line 78:
* Note: that only sda = the actual disk gives us statistics and not the disk partitions sda1, sda2, etc.
Added lines 82-84:
* The graph shows "W" for Writing and "R" for Reading I/O
* Note: the disk like sda and the partition on the disks sda1 both report the '''same''' disk I/O = this is double counting the I/O - a kernel bug IMHO but we have a work around this using User Defined Disk Groups or now starting with the "-g auto" feature to automatically define the disks as disk groups (up to 64 disks).
http:/docs/nmon16a_Disk_600.gif
Changed lines 87-91 from:
'''Disk Graphs - with workload'''
* Here we see the disk is 23% busy and writing 19 MB/s
* The graph shows "W" for Writing and "R" for Reading I/O
http:/docs/nmon16a_Disk_600.gif
'''Disk Stats'''
to:

'''Disk Stats by more numbers'''
Added lines 93-102:

'''Disk Rain Diagram'''
* Hit "o" (lowercase Oh!)
* With just one disk this looks stupid (see the single "_" but imagine you had 640.
* The panel would have 10 lines and one character per disk
* As each disk gets busier more pixels are added to its character.
* This gives you a quick idea of how busy your disks are, as a whole.
* You also see unused disks or ranges of disks that are particularly busy.
http:/docs/nmon16a_Disk_with_o_600.gif
Added line 107:
Added line 117:
Added line 124:
Changed lines 129-136 from:
'''Disk Rain Diagram'''
* Hit "o" (lowercase Oh!)
* With just one disk this looks stupid (see the single "_" but imagine you had 640.
* The panel would have 10 lines and one character per disk
* As each disk gets busier more pixels are added to its character.
* This gives you a quick idea of how busy your disks are, as a whole.
* You also see unused disks or ranges of disks that are particularly busy.
http:/docs/nmon16a_top3_600.gif
to:

Changed line 135 from:
http:/docs/nmon16a_Disk_with_o_600.gif
to:
http:/docs/nmon16a_top3_600.gif
January 04, 2016, at 10:08 AM by 127.0.0.1 -
Changed line 119 from:
http:/docs/nmon16a_Disk_with_o_600.gif
to:
http:/docs/nmon16a_top3_600.gif
January 04, 2016, at 10:06 AM by 127.0.0.1 -
Added lines 50-65:
'''CPU Wide or concise View'''
* Hit "C" (uppercase c) to see these.
* With lots of CPU cores and lots of CPU core threads (Power Simultaneous Multiple Threads or x86 Hyper-threads sometimes called logical CPUs) we have trouble showing them all on one screen.
* This Concise view shows smaller graphs across the screen (rather than down the screen) and up to 192 CPU core threads at a time.
http:/docs/nmon16a_CPU_wide_600.gif

'''CPU cores with variable MHz'''
* Hit "M" (uppercase m) to see these.
* Some machines like the POWER S812LC and S822LC plus new in 2015 Intel PC's (so I am told - if you have one please let me know) can run different CPU cores at different MHz frequencies. Normally, all the CPU cores run as one MHz frequencies (native whole machine or at a VM level) even if they can all rise and fall the MHz together.
* If you hit "M" three times you cycle through three displays of this feature and the 4th one toggles this off.
* 1st "M" = the CPU core threads MHz http:/docs/nmon16a_MHz_1_600.gif

* 2st "M" the CPU cores MHz http:/docs/nmon16a_MHz_2_600.gif

* 3st "M" the CPU cores MHz graphs http:/docs/nmon16a_MHz_3_600.gif
January 04, 2016, at 09:55 AM by 127.0.0.1 -
Changed line 130 from:
http:/docs/nmon16a_gpu.gif
to:
http:/docs/nmon16a_GPU_600.gif
January 04, 2016, at 09:53 AM by 127.0.0.1 -
Changed line 63 from:
http:/docs/Image111.gif
to:
http:/docs/nmon16a_Disk_with_dot_600.gif
Added line 90:
** NOTE: NEED T GRAB AN UP TO DATE IMAGE
Changed line 103 from:
http:/docs/Image119.gif
to:
http:/docs/nmon16a_Disk_with_o_600.gif
Changed lines 108-111 from:
http:/docs/Image120.gif
to:
http:/docs/nmon16a_Disk_with_o_600.gif
'''Top Processes in mode 3 = User Commands'''
* (Hit "t") then hit "u" for User command rather than process names - this usually shows yu the command line options used
http:/docs/nmon16a_top3u_600.gif
Changed line 115 from:
http:/docs/Image121.gif
to:
http:/docs/nmon16a_top1_600.gif
Changed lines 119-121 from:
* You can see the largest process in 504 MB and called "java" - no surprise there then!
http:/docs/Image122.gif
to:
* You can see the largest process in 10432 MB and called "ssh" - Normally "Java" is the biggest!
http:/docs/nmon16a_top4_600.gif
'''Top Processes in mode 5 = I/O order'''
* Have the top Processes on screen (Hit "t") then hit "5" for mode 5
* Here the processes are in I/O in KB per second order
* Note: You must be logged in as root for this to work due to odd /proc filesystem read/write permissions = Kernel bug IMHO
http:/docs/nmon16a_top5_600.gif

'''Graphical CPU Accelerator stats'''
* Use "a" to see these
* Of course, you need to have a NVIDIA GPU adapter or two installed, a special build nmon version and the nvidia ML library available
http:/docs/nmon16a_gpu.gif
January 04, 2016, at 09:34 AM by 127.0.0.1 -
Changed line 13 from:
http:/docs/Image101.gif
to:
http:/docs/nmon16a_flash_631.gif
Changed line 16 from:
http:/docs/Image102.gif
to:
http:/docs/nmon16a_Help_600.gif
Changed lines 20-22 from:
* In this case we have SUSE SLES 10.2 running on four 4.2 GHz POWER6 CPUs
http:/docs/Image104.gif
to:
* In this case we have Intel processor running Ubuntu 15.04 running on four 3.3 GHz
http:/docs/nmon16a_Resources_600.gif
Changed lines 25-26 from:
* We can see the LPAR is only consuming 0.004 of a single Power 6 Processor as it is just idling.
http:/docs/Image105.gif
to:
* We can see the LPAR is only consuming 1.667 Physical CPU cores out of a machine with 20 Cores with 1 cores and two virtual CPU cores in this LPAR
http:/docs/nmon16a_Partition_600.gif
Deleted lines 32-34:
http:/docs/Image106.gif
'''CPU Stats - again'''
* This time the machine is busier
Changed line 34 from:
http:/docs/Image107.gif
to:
http:/docs/nmon16a_CPU_600.gif
Changed lines 39-41 from:
http:/docs/Image108.gif
'''CPU Long Term Graph - again'''
* Note the top left now says 4 seconds - I slowed down the update and so snapshot rate of nmon to show a longer period of time.
to:
http:/docs/nmon16a_CPU_LongTerm_600.gif
* Note the top left says 2 seconds
Changed lines 48-49 from:
http:/docs/Image109.gif
to:
* Below I hit a "6" to get a 60% horizontal line drawn
http:/docs/nmon16a_CPU_LongTerm_60_600.gif
Changed line 53 from:
* We can see 15 MB of free RAM out of 484MB
to:
* We can see 3102 MB of free RAM out of 4038 MB
Changed line 55 from:
http:/docs/Image110.gif
to:
http:/docs/nmon16a_Memory.gif
Changed line 67 from:
http:/docs/Image112.gif
to:
http:/docs/nmon16a_Disk_600.gif
Changed line 72 from:
http:/docs/Image113.gif
to:
http:/docs/nmon16a_Disk_stats_600.gif
Changed line 74 from:
* Hit "j" for Journalling file systems - OK "f" would make more sense but that was used for something else in the past!
to:
* Hit "j" for (Journalled) File systems - OK "f" would make more sense but that was used for something else in the past!
Changed line 76 from:
http:/docs/Image114.gif
to:
http:/docs/nmon16a_jfs_600.gif
Changed line 80 from:
http:/docs/Image115.gif
to:
http:/docs/nmon16a_network_600.gif
Changed line 85 from:
http:/docs/Image116.gif
to:
http:/docs/nmon16a_network_no_errors_600.gif
Changed line 94 from:
http:/docs/Image118.gif
to:
http:/docs/nmon16a_Kernel_600.gif
January 03, 2016, at 09:27 PM by 127.0.0.1 -
Added line 154:
* [[nmon version 12c]] - older screen shots
January 03, 2016, at 09:25 PM by 127.0.0.1 -
Changed lines 150-172 from:
!nmon for Linux Online screen shots (slightly older version)

'''This is the start up screen'''
http:/docs/Image15.gif

'''Hit c then m then n and you get the CPU memory and Network statistics as below'''
http:/docs/Image16.gif

'''Hit j then d and you get the Journalling file systems and Disks statistics (hitting D brings up further disk statistics)'''
http:/docs/Image18.gif

'''On the Power platform hit p and you get the logical partition (LPAR) statistics'''
http:/docs/Image19.gif

'''Hit r and you get the Resources - as many details as we can find about the operating systems and processor(s)'''
http:/docs/Image20.gif

'''Hit t and you get Top Processes then hitting 1,2 or 3 brings up other details of the processes'''
http:/docs/Image22.gif

[+Older nmon version Screen Shots+]

* [[nmon version 11b]]
to:

[++Older nmon version Screen Shots++]

* [[nmon version 11b]] - older screen shots
January 03, 2016, at 09:22 PM by 127.0.0.1 -
Changed line 172 from:
* [nmon version 11b]
to:
* [[nmon version 11b]]
January 03, 2016, at 09:21 PM by 127.0.0.1 -
Changed lines 170-172 from:
to:
[+Older nmon version Screen Shots+]

* [nmon version 11b]
August 29, 2009, at 10:18 AM by 127.0.0.1 -
Changed lines 123-125 from:
'''This is the start up screen when using nmon online'''
* There are plenty of hints on how to switch on/off (toggle) the various stats and text graphs
* The only one you have to remember if "q" to QUIT
to:
August 29, 2009, at 10:16 AM by 127.0.0.1 -
Added lines 8-9:
!nmon for Linux Online screen shots
Changed line 126 from:
to:
'''CPU with Disk I/O to show the relationship between them'''
Changed lines 128-130 from:
to:
'''Individual CPU use on this 6 CPU Logical partition'''
http:/docs/analyser16L.gif
'''CPU compared with Shared CPU Entitlement (Power Systems only)'''
Changed line 132 from:
to:
'''Disk read and Write with IO/second'''
Changed line 134 from:
to:
'''Hot Disks in order with Average, Weighted Average (average when in use) and Peak values'''
Changed line 136 from:
to:
'''Free Memory'''
Changed line 138 from:
to:
'''Network Read (top) and Write (bottom) - Iceberg view'''
Changed line 140 from:
to:
'''Top Processes - in this case DB2'''
Changed line 142 from:
to:
'''Run Queue'''
Changed line 144 from:
to:
''' Process switches - kernel switching to a new process'''
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to:
'''CPU Utilisation'''
Changed line 148 from:
to:
'''Pivot table covering Top Processes over time'''
Changed lines 152-153 from:

Note: These are from a slightly older version .
to:
!nmon for Linux Online screen shots (slightly older version)
August 29, 2009, at 10:06 AM by 127.0.0.1 -
Changed lines 124-146 from:
http:/docs/analyser2.gif

http:/docs/analyser2.gif

http:/docs/analyser3.gif

http:/docs/analyser4.gif

http:/docs/analyser5.gif

http:/docs/analyser6.gif

http:/docs/analyser7.gif

http:/docs/analyser8.gif

http:/docs/analyser9.gif

http:/docs/analyser11.gif

http:/docs/analyser12.gif

http:/docs/analyser15.gif
to:

http:/docs/analyser2L.gif

http:/docs/analyser3L.gif

http:/docs/analyser4L.gif

http:/docs/analyser5L.gif

http:/docs/analyser6L.gif

http:/docs/analyser7L.gif

http:/docs/analyser8L.gif

http:/docs/analyser9L.gif

http:/docs/analyser11L.gif

http:/docs/analyser12L.gif

http:/docs/analyser15L.gif
August 29, 2009, at 10:02 AM by 127.0.0.1 -
Deleted lines 1-2:

Added lines 3-7:
On this webpage you can find
# Screen shots of using nmon for Linux online
# Sample graphs from the nmon Analyser after it generated them from nmon for Linux capture to a file
# Some other screen shots from a older nmon for Linux version
----
Added lines 118-146:

----
! Sample Graphs from the nmon Analyser
'''This is the start up screen when using nmon online'''
* There are plenty of hints on how to switch on/off (toggle) the various stats and text graphs
* The only one you have to remember if "q" to QUIT
http:/docs/analyser2.gif

http:/docs/analyser2.gif

http:/docs/analyser3.gif

http:/docs/analyser4.gif

http:/docs/analyser5.gif

http:/docs/analyser6.gif

http:/docs/analyser7.gif

http:/docs/analyser8.gif

http:/docs/analyser9.gif

http:/docs/analyser11.gif

http:/docs/analyser12.gif

http:/docs/analyser15.gif
August 04, 2009, at 10:32 AM by 127.0.0.1 -
Changed lines 39-40 from:
* Note the top left now says 4 seconds - I slowed down the update and so snapshot rate of nmon to show a longer period of time
* Also not the "+" on the moving bar - this shows the average number for the graphed data.
to:
* Note the top left now says 4 seconds - I slowed down the update and so snapshot rate of nmon to show a longer period of time.
* '''Faster and Slower screen Updates''' - this works regardless of the stats you are watching:
** Hit "-" to halve the time nmon pauses between updates of the screen i.e. if it is set to 2 seconds now you get updates once a second
** Hit"+" to double the time nmon pauses between updates of the screen i.e. if it is set to 2 seconds now you get updates once in 4 seconds
** You can't go below 1 second - nmon would take too much CPU time for that to make sense
** Faster is good to watch for peaks
** Slower is good to even out the peaks to see a stable average
* Also note the "+" on the moving vertical bar - this shows the average number for the graphed data.
August 04, 2009, at 10:27 AM by 127.0.0.1 -
Changed lines 3-23 from:
Note: These are from a slightly older version and I will capture new ones as soon as possible.

'''This is the start up screen'''
http:/docs/Image15.gif

'''Hit c then m then n and you get the CPU memory and Network statistics as below'''
http:/docs/Image16.gif

'''Hit j then d and you get the Journalling file systems and Disks statistics (hitting D brings up further disk statistics)'''
http:/docs/Image18.gif

'''On the Power platform hit p and you get the logical partition (LPAR) statistics'''
http:/docs/Image19.gif

'''Hit r and you get the Resources - as many details as we can find about the operating systems and processor(s)'''
http:/docs/Image20.gif

'''Hit t and you get Top Processes then hitting 1,2 or 3 brings up other details of the processes'''
http:/docs/Image22.gif

to:
Changed lines 65-67 from:
'''114'''
to:
'''File Systems'''
* Hit "j" for Journalling file systems - OK "f" would make more sense but that was used for something else in the past!
* Here we see the root filesystem is 61% full
Changed lines 69-71 from:
'''115'''
to:
'''Network Stats'''
* Hit "n"
* All pretty obvious (I hope)
Changed lines 73-76 from:
'''116'''
to:
'''Network Stats - without error numbers'''
* If you wait a few seconds and there are no errors the lower panel is switched off.
* It will reappear is network error happen.
* On some machines with a dozen networks this saves a lot of screen space
Changed lines 78-81 from:
'''117'''
to:
'''Network File System (NFS)'''
* Hit "N"
* OK this machine was not mounted or mounting NFS so the numbers are all zero.
* Boring but I hope you get the idea.
Changed lines 83-85 from:
'''118'''
to:
'''Kernel Stats'''
* Hit "k"
* Linux does not have so may of these but we have the important once like Run Queue, Forks, Load average are not that useful as nmon already collects the detailed CPU stats and we have Uptime here too.
Changed lines 87-93 from:
'''119'''
to:
'''Disk Rain Diagram'''
* Hit "o" (lowercase Oh!)
* With just one disk this looks stupid (see the single "_" but imagine you had 640.
* The panel would have 10 lines and one character per disk
* As each disk gets busier more pixels are added to its character.
* This gives you a quick idea of how busy your disks are, as a whole.
* You also see unused disks or ranges of disks that are particularly busy.
Changed lines 95-98 from:
'''120'''
to:
'''Top Process Stats'''
* Hit "t" to see the processes
* Default mode is 3 and this arranges them in CPU use order.
* You can see the big hitters are processes called "yes" and "ncpu" from the nstress tools
Changed lines 100-102 from:
'''121'''
to:
'''Top Processes in mode 1 = more details'''
* Have the top Processes on screen (Hit "t") then hit "1" for mode 1
* There are different stats shown including status, nice and priority
Changed lines 104-107 from:
'''122'''
to:
'''Top Processes in mode 4 = size order'''
* Have the top Processes on screen (Hit "t") then hit "4" for mode 4
* Here the processes are in memory size order
* You can see the largest process in 504 MB and called "java" - no surprise there then!
Changed lines 109-110 from:
'''123'''
http:/docs/Image123.gif
to:

----

Note: These are from a slightly older version .

'''This is the start up screen'''
http:/docs/Image15.gif

'''Hit c then m then n and you get the CPU memory and Network statistics as below'''
http:/docs/Image16.gif

'''Hit j then d and you get the Journalling file systems and Disks statistics (hitting D brings up further disk statistics)'''
http:/docs/Image18.gif

'''On the Power platform hit p and you get the logical partition (LPAR) statistics'''
http:/docs/Image19.gif

'''Hit r and you get the Resources - as many details as we can find about the operating systems and processor(s)'''
http:/docs/Image20.gif

'''Hit t and you get Top Processes then hitting 1,2 or 3 brings up other details of the processes'''
http:/docs/Image22.gif
August 04, 2009, at 10:06 AM by 127.0.0.1 -
Changed lines 25-27 from:
'''101'''
to:
'''This is the start up screen when using nmon online'''
* There are plenty of hints on how to switch on/off (toggle) the various stats and text graphs
* The only one you have to remember if "q" to QUIT
Changed lines 29-30 from:
'''102'''
to:
'''This is the Help section'''
* If you hit "h" you get this Help section with loads of hints. Hit "h" again to remove the Help
Changed lines 32-34 from:
'''103'''
http:/docs/Image103.gif
'''104'''
to:
'''Resources section'''
* Hit "r" for Resources to find out what nmon can discover about your processors and Linux OS version and other features
* This is a bit of a weak area in Linux and vendors do this differently or not at all.
* In this case we have SUSE SLES 10.2 running on four 4.2 GHz POWER6 CPUs
Changed lines 37-40 from:
'''105'''
to:

'''POWER LPAR details'''
* This is Linux on Power running in a Logical Partition (LPAR) for this platform only we have LPAR details (hit "p")
* We can see the LPAR is only consuming 0.004 of a single Power 6 Processor as it is just idling.
Changed lines 42-47 from:
'''106'''
to:
'''CPU Stats - Utilisation'''
* Hit "c" for the CPU stats.
* Here we see the four CPUs
* I ran a load generator (nstress) to get the graphs active
* "U" is user time, "s" is System time and "W" id waiting for Disk I/O time.
* Obviously blank is used for idle time.
Changed lines 49-51 from:
'''107'''
to:
'''CPU Stats - again'''
* This time the machine is busier
* Note the ">" marks are the peak CPU usage - if you hit "0" (zero) these are reset to the far left.
Changed lines 53-56 from:
'''108'''
to:
'''CPU Long Term Graph'''
* Hit "l" (lowercase L) to see these. "l" for long term
* On peaky workloads like a web server you can drive yourself mad watching the above graph fluctuate up and down and guessing an average
* This graph lets you see the last 70 snapshots and moves to the right. Once full it will wrap around.
Changed lines 58-60 from:
'''109'''
to:
'''CPU Long Term Graph - again'''
* Note the top left now says 4 seconds - I slowed down the update and so snapshot rate of nmon to show a longer period of time
* Also not the "+" on the moving bar - this shows the average number for the graphed data.
Changed lines 62-66 from:
'''110'''
to:
'''Memory Stats'''
* Hit "m" for memory details
* Note: this is a Power processor based system - there is no high memory as the Power processor has been 64 bit for a decade or more and these bizarre workaround to extend memory are not required.
* We can see 15 MB of free RAM out of 484MB
* And the paging space has not been used, yet!
Changed lines 68-74 from:
'''111'''
to:
'''Disk Graphs'''
* Hit "d" for disk graphs
* Note: that only sda = the actual disk gives us statistics and not the disk partitions sda1, sda2, etc.
* This is, of course, a very small machine with just the one disk.
* If we had lots more disk we may not be able to see them all.
* Try making the font smaller and/or the window larger to show more lines
* If you hit "." (dot) then only the busy disks are shown - this works on Top Processes too.
Changed lines 76-78 from:
'''112'''
to:
'''Disk Graphs - with workload'''
* Here we see the disk is 23% busy and writing 19 MB/s
* The graph shows "W" for Writing and "R" for Reading I/O
Changed lines 80-83 from:
'''113'''
to:
'''Disk Stats'''
* Hit "D" for the Disks but this time the Numbers in more Detail.
* We can see the numbers of transfers and block sizes etc.
* Also we see the peak values - these can be reset to zero by hitting "0" (zero)
August 04, 2009, at 09:31 AM by 127.0.0.1 -
Added lines 25-26:
'''101'''
http:/docs/Image101.gif
August 04, 2009, at 09:29 AM by 127.0.0.1 -
Changed lines 23-44 from:
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to:

----
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'''110'''
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'''111'''
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'''112'''
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'''113'''
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'''114'''
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'''115'''
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'''116'''
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'''117'''
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'''119'''
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'''122'''
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'''123'''
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August 04, 2009, at 09:28 AM by 127.0.0.1 -
Changed lines 21-45 from:
http:/docs/Image22.gif
to:
http:/docs/Image22.gif

'''102'''http:/docs/Image102.gif
'''103'''http:/docs/Image103.gif
'''104'''http:/docs/Image104.gif
'''105'''http:/docs/Image105.gif
'''106'''http:/docs/Image106.gif
'''107'''http:/docs/Image107.gif
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'''123'''http:/docs/Image123.gif
August 03, 2009, at 05:23 PM by 127.0.0.1 -
Added lines 2-3:

Note: These are from a slightly older version and I will capture new ones as soon as possible.
August 02, 2009, at 02:47 PM by 127.0.0.1 -
Changed line 6 from:
'''T16'''
to:
'''Hit c then m then n and you get the CPU memory and Network statistics as below'''
Changed lines 9-12 from:
'''17'''
http:/docs/Image17.gif

'''18'''
to:
'''Hit j then d and you get the Journalling file systems and Disks statistics (hitting D brings up further disk statistics)'''
Changed line 12 from:
'''19'''
to:
'''On the Power platform hit p and you get the logical partition (LPAR) statistics'''
Changed line 15 from:
'''20'''
to:
'''Hit r and you get the Resources - as many details as we can find about the operating systems and processor(s)'''
Changed lines 18-21 from:
'''21'''
http:/docs/Image21.gif

'''22'''
to:
'''Hit t and you get Top Processes then hitting 1,2 or 3 brings up other details of the processes'''
August 02, 2009, at 02:40 PM by 127.0.0.1 -
Added lines 1-25:
[+++nmon for Linux Screen Shots+++]

'''This is the start up screen'''
http:/docs/Image15.gif

'''T16'''
http:/docs/Image16.gif

'''17'''
http:/docs/Image17.gif

'''18'''
http:/docs/Image18.gif

'''19'''
http:/docs/Image19.gif

'''20'''
http:/docs/Image20.gif

'''21'''
http:/docs/Image21.gif

'''22'''
http:/docs/Image22.gif
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Page last modified on April 20, 2017, at 05:09 PM