You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-05-13 - 16:16

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of shadow in rack #2, slot #7

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack2slot7s.osadl.org (updated Wed May 13, 2026 12:43:06)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
935205996357,3cyclictest0-21swapper/109:50:511
935204995547,4cyclictest0-21swapper/007:30:580
935204995538,10cyclictest12350irq/32-eth010:35:590
93520599522,40cyclictest1049099-21ssh10:45:521
935204995237,5cyclictest1133418-21ntp_kernel_pll_12:30:530
935204995038,9cyclictest1085023-21latency11:30:480
935204995038,9cyclictest1085023-21latency11:30:480
935204994942,5cyclictest0-21swapper/009:16:050
935204994938,7cyclictest151ktimers/011:25:500
935205994839,6cyclictest0-21swapper/112:00:001
935205994837,8cyclictest950228-21systemctl08:00:001
935205994837,8cyclictest950228-21systemctl08:00:001
935205994736,4cyclictest0-21swapper/111:30:531
935205994736,4cyclictest0-21swapper/111:30:531
935204994739,5cyclictest1132135-21latency_hist12:30:020
935206994638,5cyclictest935203-21cyclictest12:10:582
935206994617,9cyclictest1097394-21ntpq11:45:552
935205994639,4cyclictest1059848-21sendmail11:00:011
935205994639,4cyclictest1059848-21sendmail11:00:011
935205994635,8cyclictest1117515-21sshd12:10:581
935205994635,5cyclictest0-21swapper/111:05:501
935205994634,6cyclictest0-21swapper/110:00:521
935205994537,5cyclictest261-21systemd-journal12:30:011
935204994538,4cyclictest1035688-21systemd-run10:30:020
93520699444,31cyclictest1029027-21ssh10:20:542
935206994434,6cyclictest1059864-21sh11:00:022
935206994434,6cyclictest1059864-21sh11:00:022
935205994437,4cyclictest0-21swapper/109:20:561
935205994436,5cyclictest1128094-21systemd-run12:25:011
935205994433,9cyclictest1071872-21/usr/sbin/munin11:15:021
935206994334,4cyclictest0-21swapper/208:50:012
935206994333,6cyclictest96104-21cups-browsed10:00:022
935206994332,6cyclictest0-21swapper/210:30:542
935206994332,6cyclictest0-21swapper/210:30:542
935204994337,4cyclictest1128094-21systemd-run12:25:010
935204994335,5cyclictest1057372-21sendmail_mailqu10:56:020
935204994335,5cyclictest1057372-21sendmail_mailqu10:56:020
935204994322,14cyclictest151ktimers/007:35:570
93520699427,26cyclictest972581-21ssh09:10:532
935206994235,3cyclictest0-21swapper/211:30:012
935206994234,5cyclictest1019570-21systemd-run10:10:012
935206994227,11cyclictest1-21systemd12:20:432
935205994234,5cyclictest989106-21unixbench-2d09:31:061
935205994234,5cyclictest1031671-21ssh10:25:011
93520599423,30cyclictest1109297-21ssh12:00:511
935204994231,7cyclictest1097253-21sh11:45:500
935206994133,5cyclictest941268-21systemd-run07:30:022
93520499414,31cyclictest151ktimers/008:40:530
935204994134,4cyclictest1037573-21grep10:31:030
935204994134,4cyclictest1037573-21grep10:31:030
935204994133,5cyclictest1007417-21systemd-run09:55:010
935204994130,8cyclictest964546-21needreboot08:45:480
935204994130,8cyclictest1-21systemd11:20:010
93520699404,28cyclictest980554-21ssh09:20:572
935206994033,4cyclictest1043701-21cron10:40:002
935206994029,8cyclictest421-21dbus-daemon11:45:012
935206994029,7cyclictest421-21dbus-daemon10:14:202
93520599405,27cyclictest1045056-21ssh10:40:521
935204994029,8cyclictest1089900-21unixbench_singl11:36:050
935204994024,11cyclictest0-21swapper/012:15:590
935204994024,11cyclictest0-21swapper/012:15:590
935206993931,5cyclictest939758-21munin-plugin-st07:25:012
935206993931,3cyclictest0-21swapper/209:40:002
935206993929,7cyclictest420-21avahi-daemon11:21:572
935206993929,6cyclictest1055-21mta-sts-daemon09:50:102
935206993925,10cyclictest977044-21timerandwakeup09:16:072
935206993911,8cyclictest970643-21ntpq09:05:502
935206993911,11cyclictest998042-21ssh09:42:322
935205993931,5cyclictest987224-21cron09:30:011
935205993930,6cyclictest439-21systemd-logind08:45:011
935205993929,6cyclictest1043854-21latency_hist10:40:021
935204993932,4cyclictest954719-21cron08:15:010
935204993930,6cyclictest985008-21timerwakeupswit09:26:030
935206993831,4cyclictest0-21swapper/210:20:002
935206993830,5cyclictest1105840-21grep11:56:042
935206993828,6cyclictest1136220-21latency_hist12:35:022
935206993813,7cyclictest967581-21ntpq08:55:502
935206993810,9cyclictest1073306-21ntp_states11:15:562
93520599385,20cyclictest428-21mta-sts-daemon11:45:541
935205993830,5cyclictest1-21systemd09:20:021
935205993830,5cyclictest1116161-21latency_hist12:10:021
935205993830,4cyclictest0-21swapper/109:10:581
935204993830,5cyclictest950257-21systemd-run08:00:010
935204993830,5cyclictest950257-21systemd-run08:00:010
935204993830,5cyclictest1065808-21head11:06:070
935204993824,10cyclictest0-21swapper/012:05:410
935204993820,14cyclictest0-21swapper/011:01:050
935206993713,5cyclictest1089286-21ntpq11:35:552
935206993711,9cyclictest1121463-21ntp_states12:15:582
935206993711,9cyclictest1121463-21ntp_states12:15:582
93520599378,5cyclictest171rcu_preempt07:45:481
935205993729,5cyclictest938284-21systemd-run07:20:021
935205993728,6cyclictest1019631-21latency_hist10:10:021
935205993728,6cyclictest1008221-21cpuspeed09:55:431
935205993725,8cyclictest0-21swapper/112:35:561
93520599372,26cyclictest1061189-21ssh11:00:541
935204993729,5cyclictest953303-21latency_hist08:10:010
935204993729,5cyclictest1055867-21systemd-run10:55:020
93520699367,19cyclictest1000631-21ssh09:45:512
935206993628,5cyclictest949255-21fschecks_time07:55:442
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional