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2026-04-17 - 19:54

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

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.
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 highest latencies:
System rack9slot4s (updated Fri Apr 17, 2026 12:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
320559912121182,26cyclictest32225-21cut07:25:121
320549911971174,20cyclictest0-21swapper/007:25:130
320559911691146,20cyclictest11531-21apt-get07:53:441
318362564517,31sleep00-21swapper/007:23:170
316852520475,30sleep10-21swapper/107:21:421
3205499215173,39cyclictest3-21ksoftirqd/007:53:430
259312970,8sleep03205499cyclictest11:41:000
3205599601,12cyclictest17662-21/usr/sbin/munin12:40:191
32055995912,9cyclictest2225-21dbus-daemon11:45:111
3205599591,13cyclictest2300-21/usr/sbin/munin07:30:191
3205599582,9cyclictest21203-21diskstats12:10:131
32055995819,6cyclictest22-21ksoftirqd/109:54:451
32055995817,8cyclictest24586-21df_inode10:00:111
3205599577,7cyclictest2225-21dbus-daemon10:09:371
3205599564,10cyclictest17992-21diskstats08:10:151
3205599559,23cyclictest0-21swapper/112:50:201
32055995517,6cyclictest22-21ksoftirqd/109:57:381
3205599542,24cyclictest0-21swapper/110:15:011
3205599541,8cyclictest14042-21threads12:35:301
3205599541,7cyclictest11475-21sh12:00:111
3205599536,18cyclictest0-21swapper/110:39:561
3205599531,15cyclictest25710-21/usr/sbin/munin12:15:301
3205599531,13cyclictest3286-21runrttasks08:08:391
3205599524,16cyclictest16035-21/usr/sbin/munin12:05:311
3205599524,16cyclictest16035-21/usr/sbin/munin12:05:311
32055995210,18cyclictest0-21swapper/112:30:061
3205599512,9cyclictest7777-21diskmemload09:20:201
3205599511,8cyclictest29926-21ssh11:11:581
3205599511,7cyclictest4122-21proc_pri12:25:271
3205599501,9cyclictest10595-21ntp_states11:25:251
3205599501,8cyclictest7922-21cron07:45:001
3205599501,8cyclictest7107-21memory11:55:201
32055995011,9cyclictest2024-21watchsnmpd08:55:001
3205599491,9cyclictest7777-21diskmemload09:40:241
3205599491,9cyclictest25309-21sshd10:34:311
3205599491,8cyclictest32668-21sh09:35:131
32055994817,5cyclictest22-21ksoftirqd/110:52:011
3205599481,15cyclictest14773-21ssh10:56:021
3205599471,7cyclictest2049-21iostat_ios11:50:201
3205599471,14cyclictest729-21/usr/sbin/munin11:15:231
3205599452,6cyclictest14239-21runrttasks08:00:141
3205599451,13cyclictest26387-21ssh09:28:451
3205599441,9cyclictest18478-21ssh11:00:191
3205599441,8cyclictest20673-21cat08:15:281
3205599431,6cyclictest14816-21ssh11:30:161
3205599421,8cyclictest29175-21cpuspeed_turbos08:40:111
32055994023,4cyclictest22-21ksoftirqd/111:40:041
3205599401,6cyclictest310962sleep110:40:161
32055993919,5cyclictest22-21ksoftirqd/109:16:261
285012391,34sleep07777-21diskmemload10:37:090
32055993822,5cyclictest22-21ksoftirqd/112:45:261
32055993722,5cyclictest22-21ksoftirqd/112:21:311
32055993722,5cyclictest22-21ksoftirqd/111:39:011
32055993721,6cyclictest22-21ksoftirqd/108:21:221
3205599372,12cyclictest12051-21/usr/sbin/munin07:55:231
3205499379,11cyclictest0-21swapper/010:34:430
3205599362,6cyclictest8357-21df09:10:131
32055993621,5cyclictest22-21ksoftirqd/110:13:521
32055993619,6cyclictest22-21ksoftirqd/111:24:001
32055993520,5cyclictest22-21ksoftirqd/111:06:561
32055993518,5cyclictest22-21ksoftirqd/109:46:051
32055993517,5cyclictest22-21ksoftirqd/110:21:071
32055993514,6cyclictest22-21ksoftirqd/110:48:521
3205499353,29cyclictest4387-21ssh09:39:420
3205499351,14cyclictest9988-21seq12:31:220
3205499351,14cyclictest1002-21ssh10:09:370
32055993418,5cyclictest22-21ksoftirqd/110:29:451
32055993417,6cyclictest22-21ksoftirqd/108:30:331
3205499341,8cyclictest12193-21ssh09:14:220
32054993411,7cyclictest20444-21sensors11:35:270
32055993318,5cyclictest22-21ksoftirqd/109:33:021
32055993318,5cyclictest22-21ksoftirqd/108:46:381
32055993318,5cyclictest22-21ksoftirqd/108:38:011
3205499331,16cyclictest8063-21seq10:50:070
3205499331,15cyclictest4284-21taskset11:19:420
224012331,4sleep022412-21ssh12:10:350
16812330,5sleep0111rcuc/011:50:140
123182330,9sleep03205499cyclictest10:20:220
326742321,27sleep014233-21kworker/0:212:21:260
32055993217,5cyclictest22-21ksoftirqd/109:00:431
3205499325,4cyclictest81rcu_preempt09:22:190
3205499324,7cyclictest81rcu_preempt10:56:330
3205499324,7cyclictest81rcu_preempt09:56:000
3205499324,4cyclictest81rcu_preempt12:41:380
3205499324,4cyclictest81rcu_preempt12:19:420
3205499324,4cyclictest81rcu_preempt12:08:250
3205499324,4cyclictest81rcu_preempt12:08:240
3205499324,4cyclictest81rcu_preempt10:12:280
3205499323,5cyclictest81rcu_preempt12:54:350
32054993212,7cyclictest23028-21ssh12:45:200
32054993212,6cyclictest14238-21diskstats08:00:150
32054993211,6cyclictest127562chrt09:47:440
3205499321,14cyclictest9943-21df_inode11:25:150
3205499321,11cyclictest81rcu_preempt08:43:220
3205499320,11cyclictest81rcu_preempt08:52:140
199662321,27sleep019980-21ssh10:28:480
3205499316,6cyclictest14368-21users09:15:300
3205499314,4cyclictest81rcu_preempt11:08:170
3205499313,5cyclictest81rcu_preempt10:47:520
3205499313,4cyclictest81rcu_preempt10:43:280
3205499312,4cyclictest81rcu_preempt12:27:170
3205499312,4cyclictest81rcu_preempt10:19:250
3205499312,16cyclictest12787-21/usr/sbin/munin12:35:180
3205499312,14cyclictest12158-21grep07:55:130
3205499312,14cyclictest11474-21df12:00:110
3205499311,8cyclictest16837-21ssh09:51:390
32054993113,6cyclictest5191-21python09:00:260
32054993113,5cyclictest24954-21iostat_ios10:00:180
32054993112,6cyclictest27623-21/usr/sbin/munin09:30:120
32054993112,6cyclictest16830-21python08:05:260
32054993110,4cyclictest81rcu_preempt09:28:240
94632301,5sleep00-21swapper/011:57:570
32055993015,5cyclictest22-21ksoftirqd/109:09:591
32055993012,5cyclictest81rcu_preempt08:25:281
3205499308,11cyclictest31779-21sh11:47:280
3205499303,4cyclictest81rcu_preempt11:01:170
32054993021,6cyclictest25717-21hddtemp_smartct08:30:170
3205499301,4cyclictest81rcu_preempt09:40:080
32054993011,6cyclictest7450-21taskset09:06:430
32054993011,6cyclictest6813-21irqstats07:40:210
32054993010,4cyclictest14814-21sort11:30:150
37172291,24sleep00-21swapper/008:57:070
3205599292,14cyclictest2485-21df_inode08:55:141
3205599291,8cyclictest9938-21latency_hist07:50:011
32055992915,5cyclictest22-21ksoftirqd/107:35:061
3205499293,4cyclictest81rcu_preempt11:13:360
32054992918,6cyclictest5562-21unixbench_singl07:35:280
32054992911,6cyclictest5094-21df11:20:130
3205499291,13cyclictest28877-21date08:40:010
3205499289,6cyclictest20675-21wc08:15:280
3205499283,16cyclictest0-21swapper/007:32:280
3205499282,13cyclictest18709-21python08:10:270
3205499273,16cyclictest0-21swapper/008:20:400
3205499271,13cyclictest9472-21runrttasks07:46:370
247652261,5sleep00-21swapper/008:26:590
3205499254,3cyclictest81rcu_preempt08:46:380
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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