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2026-08-21 - 10:48
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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 all highest latencies:
System rackeslot8.osadl.org (updated Fri Aug 21, 2026 00:43:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1553872740,1sleep0155390-21grep21:15:280
4179405992825,1cyclictest0-21swapper/321:20:083
4179405992521,1cyclictest0-21swapper/322:40:183
4179405992418,3cyclictest26462-21chrt19:40:123
4179405992321,1cyclictest0-21swapper/322:00:273
4179405992321,1cyclictest0-21swapper/300:20:153
4179405992320,1cyclictest0-21swapper/322:33:333
4179405992320,1cyclictest0-21swapper/321:40:063
4179405992320,1cyclictest0-21swapper/300:35:473
4179405992219,1cyclictest0-21swapper/323:00:193
4179405992219,1cyclictest0-21swapper/322:45:253
4179405992219,1cyclictest0-21swapper/321:00:033
4179405992219,1cyclictest0-21swapper/300:10:213
4179405992219,1cyclictest0-21swapper/300:10:003
417940599212,14cyclictest109143-21taskset20:41:353
4179405992118,1cyclictest0-21swapper/323:20:233
4179405992118,1cyclictest0-21swapper/321:10:003
4179405992118,1cyclictest0-21swapper/300:15:163
4179405992117,1cyclictest0-21swapper/320:01:023
417940599211,15cyclictest83791-21turbostat20:25:003
417940599211,15cyclictest391384-21taskset23:46:583
417940599211,15cyclictest391384-21taskset23:46:583
417940599207,10cyclictest314069-21turbostat23:00:003
417940599205,5cyclictest267002-21taskset22:29:553
4179405992018,1cyclictest0-21swapper/300:00:203
4179405992017,1cyclictest0-21swapper/323:35:293
4179405992017,1cyclictest0-21swapper/323:35:283
4179405992017,1cyclictest0-21swapper/323:30:233
4179405992017,1cyclictest0-21swapper/320:40:003
4179405992017,1cyclictest0-21swapper/319:20:263
417940599201,15cyclictest217775-21taskset21:55:243
417940599201,14cyclictest408327-21taskset00:00:003
4179405991917,1cyclictest0-21swapper/321:15:013
4179405991916,1cyclictest0-21swapper/322:12:173
4179405991916,1cyclictest0-21swapper/321:52:203
4179405991916,1cyclictest0-21swapper/321:50:013
4179405991916,1cyclictest0-21swapper/321:35:243
4179405991916,1cyclictest0-21swapper/321:30:223
4179405991916,1cyclictest0-21swapper/321:30:003
4179405991916,1cyclictest0-21swapper/321:15:273
4179405991916,1cyclictest0-21swapper/320:17:013
4179405991916,1cyclictest0-21swapper/319:50:023
4179405991916,1cyclictest0-21swapper/319:35:113
4179405991916,1cyclictest0-21swapper/300:30:233
4179405991916,1cyclictest0-21swapper/300:25:223
417940599191,14cyclictest305308-21taskset22:52:253
417940599191,14cyclictest228203-21chrt22:05:143
417940599191,13cyclictest89831-21taskset20:25:383
417940599191,13cyclictest384718-21turbostat23:45:003
1363482190,9sleep0137159-21grep21:05:180
4179405991816,1cyclictest0-21swapper/323:50:263
4179405991816,1cyclictest0-21swapper/319:25:233
4179405991816,1cyclictest0-21swapper/319:15:013
4179405991815,1cyclictest0-21swapper/323:25:233
4179405991815,1cyclictest0-21swapper/323:15:243
4179405991815,1cyclictest0-21swapper/323:14:413
4179405991815,1cyclictest0-21swapper/322:36:513
4179405991815,1cyclictest0-21swapper/322:15:183
4179405991815,1cyclictest0-21swapper/320:50:153
4179405991815,1cyclictest0-21swapper/319:50:163
417940599181,13cyclictest257555-21taskset22:20:303
417940599181,13cyclictest113725-21taskset20:45:193
3352272180,7sleep1331ktimers/123:10:181
4179405991714,1cyclictest0-21swapper/320:31:403
4179405991714,1cyclictest0-21swapper/320:10:133
417940599171,13cyclictest64284-21taskset20:07:153
417940599171,13cyclictest19664-21sleep19:35:003
417940599171,12cyclictest45553-21chrt19:55:123
417940599171,12cyclictest322321-21taskset23:05:123
4179405991614,1cyclictest0-21swapper/319:15:153
417940599161,12cyclictest128249-21taskset20:55:293
4058112161,11sleep2405856-21ntpq23:55:232
1032312162,4sleep2222-21plymouthd20:40:112
3792822130,10sleep1380607-21cut23:40:181
3678232130,10sleep1367831-21ssh23:31:531
2744272130,9sleep0274433-21ssh22:33:550
1651262131,8sleep2165148-21idleruntime-cro21:25:002
906222121,8sleep190651-21sort20:30:151
4707542120,9sleep2470760-21ssh00:39:342
4474782121,9sleep01-21systemd00:25:000
4073842120,2sleep10-21swapper/123:58:071
3378642120,2sleep20-21swapper/223:15:012
321352121,8sleep226048-21sendmail-msp19:40:562
2947312120,2sleep0222-21plymouthd22:45:210
2891092120,9sleep1282752-21sendmail-msp22:40:461
775502110,8sleep177331-21sendmail-msp20:20:051
725482111,7sleep273498-21tr20:15:162
694242111,7sleep269862-21grep20:10:202
66292110,1sleep20-21swapper/219:22:082
4394132110,5sleep00-21swapper/000:19:230
41732012110,5sleep1222-21plymouthd19:05:041
3203622111,4sleep1314100-21sendmail-msp23:00:331
2205492110,8sleep2219938-21sendmail-msp22:00:172
1815352110,8sleep1182055-21irqcore21:35:181
1715002110,8sleep0171506-21ssh21:25:510
1493752111,2sleep2222-21plymouthd21:14:552
4571052104,3sleep1458647-21cat00:30:181
4218012102,5sleep2421833-21ntpq00:05:252
4159362105,3sleep10-21swapper/100:04:411
3379692101,5sleep0337750-21appstreamcli23:15:050
3128002100,7sleep2312804-21ssh22:56:302
3061702100,8sleep1306176-21ssh22:54:451
3047172100,2sleep0222-21plymouthd22:50:460
2914212101,6sleep1292057-21irqrtprio22:45:191
263102101,6sleep126048-21sendmail-msp19:40:121
2591902100,7sleep0259263-21latency_hist22:25:010
2335692101,5sleep2233602-21ntpq22:05:262
2216662100,7sleep1222762-21tr22:00:201
2009942101,6sleep1201924-21memory21:45:211
89846294,3sleep1331ktimers/120:25:491
64354290,1sleep10-21swapper/120:08:091
58099290,6sleep058249-21sort20:05:010
48058290,6sleep149854-21kthreadcore19:55:191
468710290,1sleep00-21swapper/000:35:230
439904290,7sleep1439907-21sh00:20:051
426340290,6sleep1427956-21ssh00:10:181
41794059997,1cyclictest0-21swapper/319:10:013
4173249290,4sleep2222-21plymouthd19:05:132
408456291,6sleep2874-21rs:main2
345776292,4sleep0345537-21sendmail-msp23:20:060
337976291,4sleep1337686-21apt-get23:15:061
322700291,5sleep2323049-21cut23:05:162
322391290,6sleep0322493-21entropy23:05:140
275089290,7sleep2275095-21ssh22:35:042
265498290,2sleep1265500-21ssh22:25:491
259517291,3sleep0259554-21apt-get22:25:120
254161290,6sleep1255477-21cut22:20:211
243776291,4sleep1222-21plymouthd22:15:111
228359291,5sleep0228446-21tune2fs22:05:150
211898291,2sleep20-21swapper/221:54:312
196487291,5sleep1196643-21latency_hist21:45:001
192436291,5sleep2188699-21sendmail-msp21:40:192
149789291,5sleep10-21swapper/121:15:141
127596291,5sleep1127647-21ntpq20:55:211
111953291,5sleep2113724-21tr20:45:192
8932280,2sleep00-21swapper/019:25:200
5949281,4sleep15991-21ntpq19:20:231
462486281,4sleep2462492-21ssh00:33:132
460807281,4sleep0460907-21ntpq00:30:210
44977280,2sleep1222-21plymouthd19:51:351
447851282,3sleep1331ktimers/100:25:141
445534281,4sleep2439681-21sendmail-msp00:20:302
439616281,4sleep1439657-21munin-run00:20:011
4185967281,5sleep14187239-21cat19:15:021
4184778280,5sleep14184817-21ntpq19:10:201
4179605280,5sleep0222-21plymouthd19:10:110
417873284,2sleep0418977-21kthreadcore00:05:200
4175484281,4sleep04177318-21cut19:05:190
39567281,4sleep040457-21sed19:50:170
391635281,4sleep2391641-21ssh23:47:382
391635281,4sleep2391641-21ssh23:47:372
390221280,4sleep0390267-21ntpq23:45:240
390221280,4sleep0390267-21ntpq23:45:230
37914281,4sleep20-21swapper/219:45:222
369292280,4sleep1369333-21ssh23:35:141
369292280,4sleep1369333-21ssh23:35:141
368731280,1sleep00-21swapper/023:34:250
367669281,4sleep2222-21plymouthd23:31:252
345847280,5sleep2345851-21ssh23:20:112
345809280,5sleep1345844-21apt-get23:20:101
322253280,2sleep1222-21plymouthd23:05:071
315820280,5sleep2316881-21grep23:00:192
306593281,4sleep1306588-21apt-get22:55:131
283446280,5sleep0283676-21irqcore22:40:160
249723280,1sleep0222-21plymouthd22:15:340
241187281,4sleep2241228-21ntpq22:10:232
204171283,3sleep24179399-21cyclictest21:49:392
203228280,1sleep0222-21plymouthd21:47:040
182057281,3sleep2182721-21kthreadcore21:35:192
179704280,5sleep1222-21plymouthd21:31:571
141479280,2sleep2222-21plymouthd21:09:372
134904281,1sleep10-21swapper/121:02:141
96851271,2sleep00-21swapper/020:35:110
96431270,1sleep00-21swapper/020:33:030
83683271,3sleep0222-21plymouthd20:24:010
78961270,4sleep279884-21cut20:20:182
77076271,3sleep0222-21plymouthd20:17:300
71185271,2sleep10-21swapper/120:15:111
64801271,3sleep064957-21diskstats20:10:140
578270,1sleep00-21swapper/019:20:060
57451270,4sleep157696-21awk20:00:291
57238271,3sleep257265-21ntpq20:00:262
51574270,1sleep20-21swapper/219:59:172
470084271,4sleep1470073-40updatedb.plocat00:37:411
46952270,4sleep048056-21grep19:55:170
453735271,3sleep20-21swapper/200:25:352
433897271,3sleep2435431-21grep00:15:202
424263271,3sleep2424300-21apt-get00:10:112
422446270,1sleep1422452-21ssh00:05:531
4194270270,1sleep20-21swapper/219:19:482
4185474270,1sleep20-21swapper/219:11:382
414568271,3sleep086188-21systemd-journal00:00:470
398829270,1sleep00-21swapper/023:50:570
384964270,5sleep10-21swapper/123:45:051
384964270,5sleep10-21swapper/123:45:041
353668270,4sleep10-21swapper/123:25:121
32117271,4sleep026048-21sendmail-msp19:40:430
314414271,2sleep00-21swapper/023:00:120
284464271,3sleep2285354-21kthreadcore22:40:182
273947271,3sleep1222-21plymouthd22:32:321
25986271,3sleep226000-21sh19:40:012
236005270,3sleep0222-21plymouthd22:10:130
219098270,1sleep10-21swapper/121:57:431
212393270,3sleep2222-21plymouthd21:55:122
211607270,4sleep0222-21plymouthd21:53:460
19892271,3sleep0222-21plymouthd19:35:100
195042270,1sleep00-21swapper/021:40:550
188514270,5sleep0222-21plymouthd21:39:420
174964271,3sleep00-21swapper/021:30:200
171992271,4sleep1171998-21ssh21:27:161
163698271,3sleep0157303-21sendmail-msp21:21:010
156166274,2sleep2156171-21sh21:16:592
148733271,3sleep1148737-21ssh21:13:081
142101271,3sleep0142297-21ssh21:10:140
13481271,3sleep213514-21apt-get19:30:102
12896271,3sleep1222-21plymouthd19:25:571
121981270,1sleep10-21swapper/120:52:201
114839271,4sleep1114878-21ntpq20:45:231
110147271,3sleep0111042-21cut20:45:180
109078271,4sleep0103006-21sendmail-msp20:40:440
95700260,4sleep295738-21ntpq20:30:242
89873260,3sleep2222-21plymouthd20:26:102
89203260,3sleep089243-21ntpq20:25:210
7152261,2sleep2222-21plymouthd19:25:142
69978260,3sleep170020-21ntpq20:10:231
454159260,3sleep0222-21plymouthd00:26:490
425497260,3sleep0426106-21ssh00:10:160
4194251260,3sleep0222-21plymouthd19:19:340
400600260,3sleep0400609-21ssh23:55:140
392832260,2sleep20-21swapper/223:50:152
38540260,3sleep1222-21plymouthd19:46:091
380609261,2sleep20-21swapper/223:40:202
357184260,2sleep0358709-21latency23:25:190
354624261,3sleep2353633-21/usr/sbin/munin23:25:172
338056260,3sleep2338204-21df23:15:152
330410260,3sleep0330614-21cat23:10:140
32756260,2sleep00-21swapper/019:45:110
306551260,3sleep0306592-21ssh22:55:120
305863260,3sleep2305869-21ssh22:53:582
292059261,2sleep20-21swapper/222:45:192
282654260,3sleep0222-21plymouthd22:39:560
282366260,2sleep1222-21plymouthd22:39:041
267328260,2sleep2222-21plymouthd22:30:122
251619263,1sleep20-21swapper/222:20:102
251116260,1sleep20-21swapper/222:19:332
242915260,3sleep1242921-21ssh22:13:351
235060260,1sleep10-21swapper/122:08:131
220159261,3sleep0222-21plymouthd22:00:030
204656260,3sleep10-21swapper/121:50:141
166893261,2sleep20-21swapper/221:25:212
159706260,4sleep1161128-21cut21:20:181
15808260,4sleep117594-21cut19:30:171
131453261,2sleep20-21swapper/221:00:192
128371260,1sleep00-21swapper/020:57:040
128336260,1sleep2222-21plymouthd20:56:382
116065260,1sleep20-21swapper/220:50:052
103225260,3sleep1103006-21sendmail-msp20:40:061
102926260,1sleep20-21swapper/220:39:462
102622260,2sleep1222-21plymouthd20:35:531
64171250,1sleep00-21swapper/020:05:480
63534250,2sleep20-21swapper/220:05:232
41455250,2sleep2222-21plymouthd19:50:182
399448250,2sleep1399454-21ssh23:52:421
382368250,3sleep086188-21systemd-journal23:40:210
369334250,2sleep20-21swapper/223:35:152
369334250,2sleep20-21swapper/223:35:152
368978251,2sleep0222-21plymouthd23:35:010
368978251,2sleep0222-21plymouthd23:35:000
259510250,2sleep2222-21plymouthd22:25:102
24992250,2sleep10-21swapper/119:35:191
219428250,2sleep0222-21plymouthd21:58:420
173332250,2sleep20-21swapper/221:30:132
14807250,2sleep0222-21plymouthd19:30:170
140829250,3sleep1135393-21/usr/sbin/munin21:05:271
134862250,2sleep0222-21plymouthd21:01:410
121906250,2sleep0222-21plymouthd20:51:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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