Performance Counter Metrics

The following sections describe the various types of performance counters that are captured by the Virtual Client while running any of the various workloads supported. This is a standard set of performance counters captured in both the Guest/VM as well as the Azure Host scenarios.

Capture Intervals

Performance counters are captured on Windows systems every 1 second and are aggregated/averaged out on 10 minute intervals by default. This allows the Virtual Client to have a large number of samples over the interval of time when calculating averages. This in turn increases the accuracy and validity of the performance measurements.

Counters (Windows Systems)

The following performance counters are captured during the duration of the Virtual Client execution on Azure VMs running a Windows operating system. These counters are tracked the entire time the Virtual Client is running on the intervals noted above.

Counters are captured on Windows systems using the out-of-box support in the .NET SDK for the performance counter sub-system.

Counter Name	Example Value (min)	Example Value (max)	Example Value (avg)
\IPv4\Datagrams Received/sec	1.9394553899765015	523.2702026367188	7.459091585073898
\IPv4\Datagrams Sent/sec	1.4957220554351807	59.85932540893555	2.4022125797220039
\IPv4\Datagrams/sec	3.435187339782715	583.6214599609375	9.862171525062344
\Memory\Available Bytes	137898049536.0	254628593664.0	173305532521.59568
\Memory\Cache Bytes	65195400.0	117965808.0	98183972.33649932
\Memory\Cache Faults/sec	6.581874847412109	2068.153564453125	47.935744725541798
\Memory\Committed Bytes	24908865536.0	142634614784.0	106716024126.17639
\Memory\Demand Zero Faults/sec	58.619815826416019	43696.21484375	2503.7350609105189
\Memory\Page Faults/sec	88.71714782714844	43664.671875	3343.535956591085
\Memory\Page Reads/sec	0.06315436959266663	200.9219207763672	8.28668747248894
\Memory\Page Writes/sec	0.0	0.0	0.0
\Memory\Pages Input/sec	3.1273350715637209	739.6574096679688	34.66781720506935
\Memory\Pages Output/sec	0.0	0.0	0.0
\Memory\Pages/sec	3.127346992492676	739.6596069335938	34.62828928862161
\Memory\Transition Faults/sec	26.764577865600587	15638.5693359375	1067.3553226527884
\PhysicalDisk(_Total)% Disk Read Time	0.00955707672983408	29.516769409179689	0.8819494984394478
\PhysicalDisk(_Total)% Disk Time	51.839927673339847	166866.28125	99921.0147311186
\PhysicalDisk(_Total)% Disk Write Time	51.685264587402347	166867.515625	99920.55515474607
\PhysicalDisk(_Total)% Idle Time	60.85190963745117	79.03485870361328	65.25808287249169
\PhysicalDisk(_Total)\Avg. Disk Queue Length	2.591966390609741	8343.2822265625	4995.99608238096
\PhysicalDisk(_Total)\Avg. Disk Read Queue Length	0.000477842811960727	1.4758336544036866	0.04409263106464223
\PhysicalDisk(_Total)\Avg. Disk Write Queue Length	2.584221124649048	8343.2177734375	4995.97360443713
\PhysicalDisk(_Total)\Avg. Disk sec/Read	0.00040244602132588625	0.03853315860033035	0.00549412016542641
\PhysicalDisk(_Total)\Avg. Disk sec/Transfer	0.0033158184960484506	0.43584492802619936	0.26414447839326368
\PhysicalDisk(_Total)\Avg. Disk sec/Write	0.0033161116298288109	0.43584486842155459	0.2641487668149598
\PhysicalDisk(_Total)\Disk Bytes/sec	57389760.0	219434048.0	189502656.385346
\PhysicalDisk(_Total)\Disk Read Bytes/sec	15437.5947265625	10281823.0	378520.7838961266
\PhysicalDisk(_Total)\Disk Reads/sec	0.08935023844242096	160.9096221923828	6.552046077555928
\PhysicalDisk(_Total)\Disk Transfers/sec	745.4456176757813	20848.3984375	17039.31111275454
\PhysicalDisk(_Total)\Disk Write Bytes/sec	57268104.0	219379984.0	189124374.94708277
\PhysicalDisk(_Total)\Disk Writes/sec	743.5797119140625	20848.20703125	17036.208734941352
\Processor(_Total)% Idle Time	5.271390438079834	91.41498565673828	71.42914129983441
\Processor(_Total)% Interrupt Time	0.04631827771663666	0.8421745896339417	0.1747746500300198
\Processor(_Total)% Privileged Time	1.960703730583191	8.808183670043946	2.981151686756388
\Processor(_Total)% Processor Time	7.651301383972168	93.05585479736328	25.865997984742536
\Processor(_Total)% User Time	5.649149417877197	84.65630340576172	22.879608902872986
\Processor(_Total)\Interrupts/sec	28545.078125	224772.9375	87820.70197485584
\System\Context Switches/sec	50054.0703125	637204.4375	182084.66010854819
\System\Processes	64.98281860351563	86.70774841308594	70.201976011116
\System\System Calls/sec	82747.8828125	1651668.5	366946.69737957938
\System\Threads	5358.17138671875	6486.013671875	5983.371521823128

Additional Counters (Windows Systems)

For Windows systems that are running Hyper-V (e.g. hosting VMs), Virtual Client captures counters from the following additional counter categories.

• Hyper-V Hypervisor Logical Processor

• Hyper-V Hypervisor Root Virtual Processor

• Hyper-V Hypervisor Virtual Processor

  Examples

  Counter Name	Example Value (min)	Example Value (max)	Example Value (avg)
  \Hyper-V Hypervisor Logical Processor(_Total)\% Hypervisor Run Time	0	2.4485373497009277	0.38610789290128766
  \Hyper-V Hypervisor Logical Processor(_Total)\% Total Run Time	1.1285661458969117	64.74947357177735	11.292482366028356
  \Hyper-V Hypervisor Logical Processor(_Total)\Hypervisor Microarchitectural Buffer Flushes/sec	0	357720.78125	471.17181096330438
  \Hyper-V Hypervisor Root Virtual Processor(_Total)\% Total Run Time	0.8170837759971619	9.768498420715332	2.877983896330881
  \Hyper-V Hypervisor Virtual Processor(_Total)\% Total Run Time	0.11696118116378784	99.21871948242188	44.5632012688273

Counters (Linux Systems)

The following performance counters are captured during the duration of the Virtual Client execution on Azure VMs running a Linux operating system. These counters are tracked the entire time the Virtual Client is running on the intervals noted above.

Counters are captured on Linux systems using the Atop toolset/application. Atop is a package that can be installed on any Linux distribution that enables a wide range of performance aspects of the system to be captured. The Virtual Client integrates Atop into most workload profile scenarios by default.

Counter Name	Example Value (min)	Example Value (max)	Example Value (avg)
\Disk(sda)# Reads	209.0	49276.0	8220.819889922186
\Disk(sda)# Writes	0.0	373653.0	37056.128107800345
\Disk(sda)% Busy Time	0.0	78.0	2.199658379199089
\Disk(sda)\Avg. Request Time	0.62	23.1	1.7087094325298902
\Disk(sdb)# Reads	209.0	49123.0	8721.350161320934
\Disk(sdb)# Writes	0.0	377891.0	49333.23363066996
\Disk(sdb)% Busy Time	0.0	78.0	4.555133801480356
\Disk(sdb)\Avg. Request Time	0.63	26.0	2.230874928829001
\Disk(sdc)# Reads	209.0	37301.0	5218.567319716549
\Disk(sdc)# Writes	0.0	272345.0	56918.71029595665
\Disk(sdc)% Busy Time	0.0	78.0	18.264693622342646
\Disk(sdc)\Avg. Request Time	0.64	26.5	4.556898707794915
\Disk# Reads	14757.0	181046.0	39070.70260011387
\Disk# Writes	22549.0	4031907.0	455077.6113114443
\Disk\Avg. % Busy Time	0.0	69.27777777777777	8.526122393032623
\Disk\Avg. Request Time	0.73	23.66388888888889	2.7740474157019059
\Memory\Buffers Bytes	87556096.0	360185856.0	139338396.85526667
\Memory\Cached Bytes	3006477107.2	63887638528.0	12306316238.597668
\Memory\Free Bytes	412404940.8	13099650252.8	10407128820.115832
\Memory\Kernel Bytes	194825420.8	3328599654.4	665495325.8609982
\Memory\Page Reclaims	0.0	0.0	0.0
\Memory\Page Scans	21827000.0	456560000.0	294238175.0
\Memory\Page Steals	21550000.0	456000000.0	294089618.42105266
\Memory\Swap Space Free Bytes	0.0	0.0	0.0
\Memory\Swap Space Reads	0.0	0.0	0.0
\Memory\Swap Space Total Bytes	0.0	0.0	0.0
\Memory\Swap Space Virtual Committed Bytes	649278259.2	5798205849.6	1358700600.9040044
\Memory\Swap Space Virtual Limit Bytes	8375186227.2	33715493273.6	12030269422.353611
\Memory\Swap Space Writes	0.0	0.0	0.0
\Memory\Total Bytes	16750372454.4	67430986547.2	24060538844.707223
\Network(eth0)% Usage	0.0	0.0	0.0
\Network(eth0)\KB/sec Received	299.0	8819.0	2165.781094527363
\Network(eth0)\KB/sec Transmitted	16.0	39.0	20.4958238420653
\Network(eth0)\Packets Received	472504.0	1364828.0	945803.7923310554
\Network(eth0)\Packets Transmitted	20515.0	233996.0	77819.65110098709
\Network\Avg. % Usage	0.0	0.0	0.0
\Network\Avg. KB/sec Received	299.0	8819.0	2165.781094527363
\Network\Avg. KB/sec Transmitted	16.0	39.0	20.4958238420653
\Network\IP Datagrams Delivered	24124.0	208809.0	78577.88325740319
\Network\IP Datagrams Forwarded	0.0	0.0	0.0
\Network\IP Datagrams Received	24128.0	208843.0	78586.3122627183
\Network\IP Datagrams Transmitted	21317.0	239448.0	78745.12566438876
\Network\Packets Received	472504.0	1364828.0	945803.7923310554
\Network\Packets Transmitted	20515.0	233996.0	77819.65110098709
\Network\TCP Segments Received	23124.0	200989.0	77267.61958997722
\Network\TCP Segments Transmitted	21787.0	262562.0	85337.28777524678
\Network\UDP Segments Received	340.0	7842.0	1222.9104024297647
\Network\UDP Segments Transmitted	383.0	7888.0	1266.553720577069
\Processor Information(_Total)% IOWait Time	0.0	3.8833333333333335	0.12962962962962963
\Processor Information(_Total)% IOWait Time Min	---	---	0.0
\Processor Information(_Total)% IOWait Time Max	---	---	3.8833333333333335
\Processor Information(_Total)% IOWait Time Median	---	---	0.13962962962962963
\Processor Information(_Total)% IRQ Time	0.0	7.0	0.6301707779886148
\Processor Information(_Total)% IRQ Time Min	---	---	0.0
\Processor Information(_Total)% IRQ Time Max	---	---	1.0
\Processor Information(_Total)% IRQ Time Median	---	---	0.6
\Processor Information(_Total)% Idle Time	25.0	1311.0	356.6918406072106
\Processor Information(_Total)% Idle Time Min	---	---	0.0
\Processor Information(_Total)% Idle Time Max	---	---	55.983333333333337
\Processor Information(_Total)% Idle Time Median	---	---	11.7639876540
\Processor Information(_Total)% System Time	0.0	35.0	4.337950664136622
\Processor Information(_Total)% System Time Min	---	---	1.727689476
\Processor Information(_Total)% System Time Max	---	---	15.717548975
\Processor Information(_Total)% System Time Median	---	---	5.875463786
\Processor Information(_Total)% User Time	2.0	373.0	96.4203036053131
\Processor Information(_Total)% User Time Min	---	---	24.016666666666667
\Processor Information(_Total)% User Time Max	---	---	89.25
\Processor Information(_Total)% User Time Median	---	---	78.10371380471381
\Processor Information(_Total)\Available Threads (Avg1)	0.0	50.37	6.382355285632948
\Processor Information(_Total)\Available Threads (Avg15)	0.0	47.26	5.097149364205731
\Processor Information(_Total)\Available Threads (Avg5)	0.0	49.53	6.206646422471061
\Processor Information(_Total)\CSwitches	649314.0	142975000.0	17557335.682482445
\Processor Information(_Total)\Serviced Interrupts	188069.0	59030000.0	5904357.514329094
\Processor(cpu000)% IOWait Time	0.0	70.0	8.112523719165086
\Processor(cpu000)% IRQ Time	0.0	2.0	0.14648956356736243
\Processor(cpu000)% Idle Time	6.0	96.0	67.25483870967742
\Processor(cpu000)% System Time	0.0	2.0	0.3020872865275142
\Processor(cpu000)% User Time	0.0	93.0	23.901518026565467
\Processor(cpu001)% IOWait Time	0.0	69.0	7.474952561669829
\Processor(cpu001)% IRQ Time	0.0	0.0	0.0
\Processor(cpu001)% Idle Time	6.0	97.0	68.14667931688804
\Processor(cpu001)% System Time	0.0	1.0	0.19259962049335864
\Processor(cpu001)% User Time	0.0	93.0	23.965085388994308
\Processor(cpu002)% IOWait Time	0.0	70.0	7.7612903225806459
\Processor(cpu002)% IRQ Time	0.0	0.0	0.0
\Processor(cpu002)% Idle Time	6.0	97.0	67.74288425047439
\Processor(cpu002)% System Time	0.0	2.0	0.3189753320683112
\Processor(cpu002)% User Time	0.0	93.0	23.96584440227704