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3 Replies Last post: Nov 5, 2009 11:32 PM by matthiaseisner  

VMWare Guest Performance Report posted: Nov 4, 2009 4:43 PM

Click to view ars3n's profile Novice
ars3n
4 posts since
Jan 28, 2009
When logged into my Linux guest, top reports that it is currently using 3825544k (~3.65GB) of memory out of the 3865912k (~3.68GB) total.

Tasks: 141 total, 1 running, 140 sleeping, 0 stopped, 0 zombie
Cpu(s): 14.3% us, 0.8% sy, 0.0% ni, 84.1% id, 0.5% wa, 0.0% hi, 0.2% si
Mem: 3865912k total, 3825544k used, 40368k free, 95928k buffers
Swap: 2048276k total, 105924k used, 1942352k free, 2846736k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5649 oracle 16 0 2195m 58m 48m S 22.8 1.5 1380:40 oracle
1 root 16 0 4772 564 464 S 0.0 0.0 0:02.97 init
2 root RT 0 0 0 0 S 0.0 0.0 0:33.38 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 0:00.14 ksoftirqd/0
4 root RT 0 0 0 0 S 0.0 0.0 0:35.92 migration/1
5 root 34 19 0 0 0 S 0.0 0.0 0:00.08 ksoftirqd/1
6 root 5 -10 0 0 0 S 0.0 0.0 0:01.52 events/0
7 root 5 -10 0 0 0 S 0.0 0.0 0:28.07 events/1
8 root 8 -10 0 0 0 S 0.0 0.0 0:00.02 khelper
9 root 15 -10 0 0 0 S 0.0 0.0 0:00.00 kacpid
20 root 5 -10 0 0 0 S 0.0 0.0 0:00.14 kblockd/0
21 root 5 -10 0 0 0 S 0.0 0.0 0:00.04 kblockd/1
22 root 25 0 0 0 0 S 0.0 0.0 0:00.00 khubd
49 root 20 0 0 0 0 S 0.0 0.0 0:00.00 pdflush
50 root 15 0 0 0 0 S 0.0 0.0 0:04.46 pdflush
51 root 15 0 0 0 0 S 0.0 0.0 0:18.14 kswapd0
52 root 13 -10 0 0 0 S 0.0 0.0 0:00.00 aio/0

If I view a realtime report based on the Performance tab, I get results that are far off from what the guest believes is available (attached).


  1. Any ideas why this discrepancy exists?
  2. Can anyone explain the true difference between Usage and Consumed?
Attachments:
Tags: esx, performance, monitor, report, guage, understanding, metrics

Re: VMWare Guest Performance Report

1. Nov 5, 2009 5:01 AM in response to: ars3n
Click to view matthiaseisner's profile Enthusiast
matthiaseisner
40 posts since
Jun 5, 2009

Hi,

I checked with my own ESX farm. It seems that the usage graph goes parallel with the active used memory graph. My opinion is, that this shows the active used memory in percent. Pls try to add the active memory value. These two graphs should be parallel. This is just a guess.

Rgds

Matthias

Re: VMWare Guest Performance Report

2. Nov 5, 2009 9:40 AM in response to: matthiaseisner
Click to view ars3n's profile Novice
ars3n
4 posts since
Jan 28, 2009
Thanks for the reply. It still isn't adding up for me.


Top reports - 4GB+swap
VMware reports - between .5 and 1.5GB (attached)


top - 11:22:39 up 4 days, 13:12, 2 users, load average: 0.38, 0.33, 0.31
Tasks: 135 total, 2 running, 133 sleeping, 0 stopped, 0 zombie
Cpu(s): 14.3% us, 0.8% sy, 0.0% ni, 84.2% id, 0.5% wa, 0.0% hi, 0.2% si
Mem: 3865912k total, 3795544k used, 70368k free, 90656k buffers
Swap: 2048276k total, 93864k used, 1954412k free, 3093040k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5649 oracle 16 0 2195m 60m 50m R 19.4 1.6 1624:53 oracle
1 root 16 0 4772 564 464 S 0.0 0.0 0:03.20 init
2 root RT 0 0 0 0 S 0.0 0.0 0:36.54 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 0:00.16 ksoftirqd/0
4 root RT 0 0 0 0 S 0.0 0.0 0:38.35 migration/1
5 root 34 19 0 0 0 S 0.0 0.0 0:00.11 ksoftirqd/1
6 root 5 -10 0 0 0 S 0.0 0.0 0:01.89 events/0
7 root 5 -10 0 0 0 S 0.0 0.0 0:34.82 events/1
8 root 8 -10 0 0 0 S 0.0 0.0 0:00.02 khelper
9 root 15 -10 0 0 0 S 0.0 0.0 0:00.00 kacpid
20 root 5 -10 0 0 0 S 0.0 0.0 0:00.16 kblockd/0
21 root 5 -10 0 0 0 S 0.0 0.0 0:00.04 kblockd/1
22 root 25 0 0 0 0 S 0.0 0.0 0:00.00 khubd
49 root 20 0 0 0 0 S 0.0 0.0 0:00.00 pdflush
50 root 15 0 0 0 0 S 0.0 0.0 0:05.05 pdflush
51 root 15 0 0 0 0 S 0.0 0.0 0:22.55 kswapd0
52 root 13 -10 0 0 0 S 0.0 0.0 0:00.00 aio/0

Attachments:

Re: VMWare Guest Performance Report

3. Nov 5, 2009 11:32 PM in response to: ars3n
Click to view matthiaseisner's profile Enthusiast
matthiaseisner
40 posts since
Jun 5, 2009

Hi,

Active memory means: memory which is active changed by the VM. Pages of the physical memory which are changed by the VM.

Swapped: This is the graph of the VMkernel swap file.

U must be careful in interpreting the graphs because using different views u see different things.

Rgds

Matthias

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