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2025-12-08 - 11:41

OSADL QA Farm on Real-time of Mainline Linux

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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 
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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.

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 Mon Dec 08, 2025 00:39:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1029377995952,3cyclictest0-21swapper/221:10:012
1029376995950,6cyclictest1134140-21unixbench_multi22:39:351
1029376995143,5cyclictest1095376-21sh21:49:291
1029375995125,7cyclictest171rcu_preempt20:49:260
1029376994837,7cyclictest0-21swapper/122:34:241
1029375994738,4cyclictest0-21swapper/023:19:260
1029375994738,4cyclictest0-21swapper/023:19:260
1029375994731,13cyclictest1203381-21latency_hist00:10:030
1029377994638,5cyclictest1119020-21munin-plugin-st22:20:012
1029376994639,4cyclictest959-21mta-sts-daemon20:04:211
1029376994638,5cyclictest1156448-21missed_timers23:09:251
1029376994637,6cyclictest1220161-21cron00:35:011
1029375994639,3cyclictest0-21swapper/022:25:020
102937599462,35cyclictest1125838-21ssh22:29:220
1029375994623,12cyclictest12450irq/32-eth021:49:230
1029377994537,5cyclictest1126751-21systemd-run22:30:012
1029377994536,5cyclictest1196087-21cut00:00:022
1029377994536,5cyclictest1106523-21latency22:04:192
1029376994536,6cyclictest1211952-21aten_r2power_po00:24:111
1029376994536,6cyclictest1029380-21systemd-run19:10:011
1029377994438,3cyclictest0-21swapper/221:55:012
1029377994436,5cyclictest1220191-21systemd-run00:35:022
1029376994436,5cyclictest1063854-21sh21:05:011
1029375994436,5cyclictest1119016-21idleruntime-cro22:20:010
102937599442,38cyclictest1079842-21ssh21:29:210
1029377994335,4cyclictest0-21swapper/220:40:012
1029376994335,5cyclictest1069464-21latency_hist21:15:021
102937699433,32cyclictest657-21snmpd19:44:271
1029377994232,6cyclictest1029837-21/usr/sbin/munin19:14:142
1029376994235,4cyclictest1223364-21sendmail00:40:011
1029375994228,11cyclictest1149222-21switchtime22:59:340
1029377994131,7cyclictest422-21dbus-daemon22:39:222
1029376994135,3cyclictest0-21swapper/123:40:011
1029376994134,4cyclictest1199844-21cron00:05:011
1029376994133,5cyclictest0-21swapper/121:20:011
1029376994132,6cyclictest1038389-21systemd-run19:40:021
1029376994132,5cyclictest1079855-21ssh21:29:211
1029376994130,5cyclictest0-21swapper/121:54:371
1029375994134,5cyclictest1196013-21idleruntime-cro00:00:010
1029375994127,9cyclictest12450irq/32-eth023:53:020
1029377994030,6cyclictest474-21in:imuxsock23:53:032
102937799402,29cyclictest1212593-21ssh00:24:242
1029376994035,3cyclictest0-21swapper/122:54:331
1029376994035,2cyclictest0-21swapper/100:00:021
1029376994034,4cyclictest1029374-21cyclictest21:24:301
1029376994032,5cyclictest1087962-21/usr/sbin/munin21:39:331
1029376994030,7cyclictest421-21avahi-daemon23:28:461
1029376994030,7cyclictest421-21avahi-daemon23:28:461
1029376994030,7cyclictest1103804-21sendmail22:00:011
1029377993933,3cyclictest0-21swapper/222:00:032
1029377993932,4cyclictest1111351-21cron22:10:012
102937799392,7cyclictest1065352-21diskmemload00:09:252
1029377993926,9cyclictest1168142-21ntp_offset23:24:252
102937699394,26cyclictest1148849-21ssh22:59:231
1029376993931,5cyclictest266-21systemd-journal22:10:021
1029376993929,7cyclictest1184124-21unixbench_multi23:44:351
1029376993929,6cyclictest1091408-21ntp_kernel_pll_21:44:221
1029375993928,9cyclictest1208984-21fschecks_time00:19:160
1029375993928,8cyclictest1175022-21aten_r2power_cu23:34:120
1029375993928,8cyclictest1175022-21aten_r2power_cu23:34:120
1029375993926,10cyclictest1138035-21unixbench_multi22:44:330
1029375993924,12cyclictest0-21swapper/021:00:010
1029375993912,7cyclictest171rcu_preempt21:04:270
1029377993829,4cyclictest0-21swapper/223:35:012
1029377993829,4cyclictest0-21swapper/223:35:012
1029377993827,8cyclictest1160996-21unixbench_singl23:14:322
102937699383,26cyclictest1152732-21ssh23:04:241
1029376993832,3cyclictest1191686-21sshd23:54:331
1029376993827,8cyclictest1115178-21sh22:15:011
1029376993827,7cyclictest1-21systemd22:29:301
1029375993831,4cyclictest1133883-21switchtime22:39:330
1029375993830,5cyclictest1103787-21cron22:00:010
1029375993828,6cyclictest1103835-21kworker/u8:2-nfsiod22:55:020
1029375993827,8cyclictest1179603-21ntp_kernel_pll_23:39:230
1029377993729,5cyclictest1223099-21unixbench_multi00:39:342
1029377993725,8cyclictest1079135-21/usr/sbin/munin21:29:182
1029376993729,5cyclictest1159953-21fschecks_count23:14:131
1029376993728,5cyclictest1107366-21unixbench_singl22:04:361
1029376993728,5cyclictest1056906-21fschecks_count20:44:181
1029376993728,4cyclictest0-21swapper/100:29:261
1029376993726,8cyclictest1056353-21idleruntime-cro20:40:011
1029375993730,4cyclictest1-21systemd23:15:020
1029375993728,6cyclictest421-21avahi-daemon19:34:320
102937599372,29cyclictest1206044-21ssh00:14:250
1029377993627,5cyclictest1215918-21sh00:29:262
1029377993626,7cyclictest1084715-21latency_hist21:35:022
1029377993624,7cyclictest421-21avahi-daemon23:07:182
1029377993612,6cyclictest171rcu_preempt22:44:272
102937699366,20cyclictest437-21mta-sts-daemon19:19:271
1029376993627,6cyclictest1-21systemd22:25:011
1029376993627,4cyclictest0-21swapper/121:34:241
1029376993626,6cyclictest956-21mta-sts-daemon22:48:331
1029376993626,6cyclictest1187994-21unixbench_singl23:49:341
1029375993629,4cyclictest1141876-21grep22:49:350
1029377993529,3cyclictest0-21swapper/220:00:012
1029377993528,3cyclictest0-21swapper/219:24:312
1029376993527,5cyclictest1205454-21sort00:14:111
1029376993527,5cyclictest1138536-21latency_hist22:45:031
1029376993526,5cyclictest698-21cron23:25:011
1029376993523,9cyclictest1049749-21ntp_kernel_pll_20:19:231
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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