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2026-08-22 - 05:06
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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 376 highest latencies:
System rackbslot6.osadl.org (updated Sat Aug 22, 2026 00:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
790921630,5sleep12566099cyclictest23:04:571
1068911010,4ptp4l401ktimersoftd/321:25:133
6902650,2sleep30-21swapper/301:55:023
26952650,4sleep0101ktimersoftd/002:30:040
184562630,2sleep00-21swapper/022:19:560
25676996251,6cyclictest41-21ksoftirqd/300:39:543
106891620,2ptp4l401ktimersoftd/300:45:363
2565499611,25cyclictest1055-21runrttasks00:39:550
2565499590,26cyclictest18572-21diskmemload00:10:180
10702590,2sleep20-21swapper/201:22:092
106891590,1ptp4l401ktimersoftd/322:47:183
277552580,5sleep12566099cyclictest01:15:461
25676995743,7cyclictest41-21ksoftirqd/302:49:573
25676995743,7cyclictest41-21ksoftirqd/302:49:573
25142570,2sleep10-21swapper/101:24:371
106891570,1ptp4l401ktimersoftd/302:24:293
106891570,1ptp4l401ktimersoftd/302:15:053
2565499560,28cyclictest21061-21ssh02:49:570
2565499560,28cyclictest21061-21ssh02:49:570
2565499560,27cyclictest9346-21latency21:59:570
2565499560,25cyclictest18572-21diskmemload01:18:540
254182564,40sleep00-21swapper/021:27:530
226202560,3sleep20-21swapper/202:17:412
2565499550,23cyclictest18572-21diskmemload01:07:100
2565499550,23cyclictest18572-21diskmemload01:07:100
25676995444,5cyclictest41-21ksoftirqd/300:54:543
2565499541,22cyclictest18572-21diskmemload02:39:100
2565499540,23cyclictest18572-21diskmemload01:50:170
2565499530,23cyclictest18572-21diskmemload02:18:270
2565499530,23cyclictest15737-21ssh01:37:060
2565499520,48cyclictest20711-21gltestperf22:24:560
25676995139,6cyclictest41-21ksoftirqd/321:59:503
2565499500,23cyclictest14052-21ssh01:02:510
66892490,1sleep30-21swapper/301:28:243
106891470,1ptp4l401ktimersoftd/323:47:523
2566099464,11cyclictest16238-21ssh23:59:521
2565499461,25cyclictest18572-21diskmemload00:32:010
25654994514,22cyclictest1055-21runrttasks23:39:010
106891450,1ptp4l401ktimersoftd/321:43:343
106891450,1ptp4l401ktimersoftd/300:39:033
2566099443,12cyclictest16210-21ssh02:44:571
2566099443,12cyclictest16210-21ssh02:44:571
2565499440,31cyclictest18572-21diskmemload01:46:490
2565499431,31cyclictest18572-21diskmemload01:09:540
2565499431,27cyclictest14220-21sed02:09:450
2566499426,3cyclictest12780-21taskset22:09:062
25676994127,7cyclictest41-21ksoftirqd/302:29:573
2565499411,33cyclictest11361-21apt-get02:39:570
25676994029,5cyclictest41-21ksoftirqd/301:34:573
25676994027,6cyclictest41-21ksoftirqd/323:54:533
2565499402,29cyclictest4763-21apt-get01:59:540
25654994016,21cyclictest16263-21tail02:10:130
25654994014,23cyclictest23585-21sed22:29:570
2565499401,35cyclictest27052-21cron22:39:400
2565499393,28cyclictest31343-21apt-get21:39:480
2565499391,24cyclictest18572-21diskmemload23:29:530
25676993828,5cyclictest41-21ksoftirqd/321:29:493
25676993828,5cyclictest41-21ksoftirqd/321:29:493
2566499383,30cyclictest0-21swapper/223:39:522
2565499382,29cyclictest28957-21apt-get21:34:510
2565499382,29cyclictest28957-21apt-get21:34:510
25654993814,21cyclictest18572-21diskmemload01:25:210
25654993813,22cyclictest12554-21sort01:34:440
2565499380,22cyclictest18572-21diskmemload23:55:130
106891380,1ptp4l401ktimersoftd/323:53:003
106891380,1ptp4l401ktimersoftd/323:31:443
106891380,1ptp4l401ktimersoftd/302:56:563
106891380,1ptp4l401ktimersoftd/302:35:143
106891380,1ptp4l401ktimersoftd/302:01:193
106891380,1ptp4l401ktimersoftd/301:48:543
106891380,1ptp4l401ktimersoftd/301:40:153
106891380,1ptp4l401ktimersoftd/301:31:263
106891380,1ptp4l401ktimersoftd/301:05:173
106891380,1ptp4l401ktimersoftd/301:05:173
106891380,1ptp4l401ktimersoftd/300:30:123
106891380,1ptp4l401ktimersoftd/300:28:263
106891380,1ptp4l401ktimersoftd/300:14:403
106891380,1ptp4l401ktimersoftd/300:00:143
25676993726,5cyclictest41-21ksoftirqd/323:34:543
2566499370,4cyclictest18193-21fschecks_count22:19:542
2565499379,24cyclictest21780-21grep00:04:570
2565499372,27cyclictest826-21apt-get00:49:540
25654993714,20cyclictest18572-21diskmemload00:17:290
25654993713,21cyclictest18572-21diskmemload23:52:590
2565499371,29cyclictest18564-21apt-get00:34:550
2565499371,29cyclictest13138-21apt-get22:09:500
2565499371,23cyclictest28104-21ssh02:23:430
2565499370,33cyclictest28382-21apt-get00:44:530
2565499370,19cyclictest0-21swapper/000:04:000
2524223718,8sleep20-21swapper/221:25:372
106891370,1ptp4l401ktimersoftd/322:20:033
106891370,1ptp4l401ktimersoftd/302:49:123
106891370,1ptp4l401ktimersoftd/302:49:123
106891370,1ptp4l401ktimersoftd/302:40:133
106891370,1ptp4l401ktimersoftd/302:09:143
106891370,1ptp4l401ktimersoftd/301:53:403
106891370,1ptp4l401ktimersoftd/300:50:283
106891370,1ptp4l401ktimersoftd/300:16:373
106891370,0ptp4l401ktimersoftd/301:15:383
25676993630,3cyclictest41-21ksoftirqd/300:24:433
2566499362,7cyclictest0-21swapper/222:49:522
2565499362,28cyclictest7028-21apt-get23:04:500
2565499361,29cyclictest1290-21apt-get23:44:520
2565499361,28cyclictest27384-21apt-get22:39:520
25654993612,21cyclictest8945-21cstates00:24:560
25654993611,22cyclictest6206-21gltestperf00:54:590
25654993611,22cyclictest4605-21date01:59:450
25654993611,21cyclictest15424-21/usr/sbin/munin22:14:500
25654993610,22cyclictest4255-21if_enp1s0.100:19:590
106891360,1ptp4l401ktimersoftd/302:26:113
106891360,1ptp4l401ktimersoftd/302:11:083
106891360,1ptp4l401ktimersoftd/301:10:353
106891360,1ptp4l401ktimersoftd/301:03:413
7082350,3sleep20-21swapper/200:49:492
2566499352,5cyclictest23901-21apt-get23:34:532
2566499352,29cyclictest30355-21cron02:59:452
25664993512,20cyclictest10402-21seq22:03:582
25654993510,22cyclictest3350-21latency_hist21:49:390
2565499350,20cyclictest18572-21diskmemload23:41:480
2565499350,20cyclictest0-21swapper/002:58:070
106891350,1ptp4l401ktimersoftd/300:06:043
25664993413,18cyclictest8468-21sh02:03:262
2566499341,30cyclictest42812sleep223:47:062
2566499341,30cyclictest23406-21ssh00:05:322
25664993410,21cyclictest4164-21seq22:57:342
2565499348,22cyclictest3028-21irqrtprio22:54:560
25654993414,17cyclictest1055-21runrttasks22:06:490
25654993410,21cyclictest29594-21gltestperf02:25:010
106891340,2ptp4l23033-21kworker/3:221:45:073
25676993328,3cyclictest41-21ksoftirqd/301:19:583
2566499339,21cyclictest6034-21switchtime23:00:082
2566499339,20cyclictest4099-21head21:49:552
2566499338,3cyclictest7635-21cat23:04:562
2566499337,4cyclictest28250-21irqrtprio01:50:032
2566499332,25cyclictest0-21swapper/221:54:492
2566499331,4cyclictest0-21swapper/223:09:522
25664993313,17cyclictest3284-21sh01:57:512
25664993312,18cyclictest32591-21sh00:15:042
25664993311,19cyclictest27116-21threads01:15:082
25664993311,18cyclictest20266-21sh01:09:442
25664993310,20cyclictest22959-21sh23:33:472
25664993310,20cyclictest1055-21runrttasks00:47:242
2565499338,22cyclictest32260-21/usr/sbin/munin22:49:510
2565499336,23cyclictest31999-21cat22:49:390
2565499336,23cyclictest11933-21cstates23:14:530
2565499331,29cyclictest17141-21irqstats02:45:040
2565499331,29cyclictest17141-21irqstats02:45:040
196512330,2sleep20-21swapper/200:35:032
16452330,2sleep11650-21irqrtprio00:50:001
106891330,1ptp4l401ktimersoftd/323:44:323
2566499327,4cyclictest23573-21kernelversion01:45:012
2566499326,3cyclictest20723-21head22:24:562
2566499322,7cyclictest6478-21apt-get02:34:552
2566499321,5cyclictest12402-21/usr/sbin/munin02:40:042
2566499321,4cyclictest0-21swapper/223:14:512
25664993212,17cyclictest9165-21sh23:52:052
25664993211,18cyclictest18306-21sh01:06:462
25664993211,18cyclictest18306-21sh01:06:462
25664993210,19cyclictest17060-21sh01:39:212
2565499329,20cyclictest6275-21sed23:00:090
2565499328,21cyclictest4955-21mailstats21:50:010
2565499327,21cyclictest32178-21wc01:20:110
2565499322,24cyclictest16513-21apt-get23:24:520
25654993211,18cyclictest18572-21diskmemload01:40:310
2565499320,28cyclictest26279-21cut21:29:530
2565499320,28cyclictest26279-21cut21:29:530
106891320,1ptp4l401ktimersoftd/323:09:583
2566499319,4cyclictest17672-21seq00:33:532
2566499319,20cyclictest15714-21grep23:20:072
2566499319,20cyclictest15714-21grep23:20:072
2566499319,19cyclictest47150irq/102-ens3-Tx02:45:072
2566499319,19cyclictest47150irq/102-ens3-Tx02:45:072
2566499313,10cyclictest23481-21apt-get00:39:552
2566499312,6cyclictest11102-21apt-get23:54:532
2566499312,4cyclictest0-21swapper/221:44:462
25664993113,15cyclictest14948-21sshd22:11:342
2566499310,12cyclictest30497-21mailstats02:25:072
2565499314,23cyclictest10618-21tail23:10:030
2565499310,27cyclictest8258-21cat21:59:390
106891310,1ptp4l401ktimersoftd/323:03:283
106891310,1ptp4l401ktimersoftd/321:54:223
106891310,0ptp4l401ktimersoftd/322:05:373
25676993025,3cyclictest41-21ksoftirqd/323:29:403
25676993025,3cyclictest41-21ksoftirqd/323:24:403
25676993025,3cyclictest41-21ksoftirqd/323:24:403
2566499309,4cyclictest8157-21latency_hist00:24:432
2566499309,18cyclictest24142-21/usr/sbin/munin02:20:062
2566499307,4cyclictest26833-21latency21:29:572
2566499307,4cyclictest26833-21latency21:29:572
2566499307,4cyclictest23324-21sh02:51:002
2566499307,4cyclictest23324-21sh02:51:002
2566499307,4cyclictest17896-21cstates01:39:572
2566499306,3cyclictest10575-21unixbench_singl00:25:122
2566499303,7cyclictest5733-21apt-get00:54:542
2566499301,9cyclictest0-21swapper/201:29:472
2566499301,7cyclictest0-21swapper/223:24:582
2566499301,5cyclictest20754-21munin-run00:04:422
2566499301,10cyclictest10704-21awk00:59:542
25664993010,18cyclictest14752-21sh02:09:582
25664993010,17cyclictest3269-21cat02:30:132
2565499301,25cyclictest14067-21/usr/sbin/munin23:19:530
2565499301,25cyclictest14067-21/usr/sbin/munin23:19:530
106891300,1ptp4l401ktimersoftd/322:58:353
106891300,1ptp4l401ktimersoftd/322:36:553
25676992924,3cyclictest41-21ksoftirqd/322:29:513
2566499298,3cyclictest23487-21cut22:29:572
2566499296,3cyclictest10975-21expr02:05:062
238732296,10sleep10-21swapper/121:24:551
64822280,13sleep1241ktimersoftd/102:34:551
25676992822,3cyclictest41-21ksoftirqd/322:54:393
25676992822,3cyclictest41-21ksoftirqd/322:39:583
2566499285,3cyclictest0-21swapper/221:39:532
2566499282,6cyclictest29757-21apt-get22:44:512
2566499281,6cyclictest27715-21snmp_o5powerctl00:10:072
2566499281,4cyclictest3270-21taskset01:24:582
2566499280,3cyclictest29277-21fschecks_count21:34:542
2566499280,3cyclictest29277-21fschecks_count21:34:542
25660992821,4cyclictest25-21ksoftirqd/122:49:391
106891280,1ptp4l401ktimersoftd/321:34:423
106891280,1ptp4l401ktimersoftd/321:34:423
25676992722,3cyclictest41-21ksoftirqd/322:25:023
2566499275,3cyclictest0-21swapper/222:14:542
2566499271,5cyclictest26327-21/usr/sbin/munin22:35:042
106891270,1ptp4l401ktimersoftd/323:06:083
25676992621,3cyclictest41-21ksoftirqd/323:14:533
2566499261,5cyclictest28740-21snmp_o5powerctl22:40:072
25660992620,4cyclictest25-21ksoftirqd/102:19:441
25660992619,4cyclictest25-21ksoftirqd/122:50:161
2485522619,3sleep125-21ksoftirqd/123:35:011
106891260,1ptp4l401ktimersoftd/321:54:563
106891260,0ptp4l401ktimersoftd/322:16:033
25676992519,3cyclictest41-21ksoftirqd/322:09:523
25660992519,3cyclictest25-21ksoftirqd/121:51:091
25660992518,4cyclictest25-21ksoftirqd/122:00:541
25660992518,4cyclictest25-21ksoftirqd/121:42:071
25660992517,5cyclictest15973-21grep22:14:551
2566099244,13cyclictest7890-21ssh01:29:551
2566099243,12cyclictest15563-21ssh01:04:541
2566099243,12cyclictest15563-21ssh01:04:541
25660992419,3cyclictest25-21ksoftirqd/122:21:571
25660992418,3cyclictest25-21ksoftirqd/123:25:371
25660992418,3cyclictest25-21ksoftirqd/101:25:091
25660992417,4cyclictest6469-21head21:54:531
25660992417,4cyclictest3822-21grep00:19:551
25660992417,4cyclictest29245-21grep23:39:571
25660992417,4cyclictest25-21ksoftirqd/123:16:211
25660992417,4cyclictest18703-21cpuspeed_turbos00:34:561
25660992415,6cyclictest7903-21ssh02:02:271
2566099241,4cyclictest1799-21ssh01:55:171
25660992411,10cyclictest30171-21awk00:45:111
2566099240,5cyclictest23922-21ssh02:52:021
2566099240,5cyclictest23922-21ssh02:52:021
2566099240,21cyclictest25999-21tr21:29:511
2566099240,21cyclictest25999-21tr21:29:511
2566099234,10cyclictest14499-21ssh02:09:561
25660992317,3cyclictest25-21ksoftirqd/122:41:481
25660992317,3cyclictest25-21ksoftirqd/122:11:131
25660992316,4cyclictest30577-21snmp_o5powerctl02:25:111
25660992316,4cyclictest25-21ksoftirqd/122:32:411
25660992316,4cyclictest233-21systemd-journal22:39:401
25660992316,4cyclictest21510-21grep00:04:541
2566099231,3cyclictest16463-21ssh01:38:201
2566099231,3cyclictest11040-21ssh00:25:551
2566099230,4cyclictest6596-21chrt23:03:091
1363122317,3sleep125-21ksoftirqd/101:02:091
25660992217,3cyclictest0-21swapper/102:21:471
25660992216,4cyclictest27595-21ptp4l-jitter00:10:041
25660992216,3cyclictest25-21ksoftirqd/122:58:221
25660992216,3cyclictest25-21ksoftirqd/101:46:011
25660992216,3cyclictest22795-21ssh01:11:041
25660992213,5cyclictest15334-21timerwakeupswit00:30:101
2566099221,18cyclictest14280-21ssh23:57:261
2566099220,19cyclictest3134-21users23:45:101
2566099220,19cyclictest21866-21ssh01:44:081
2566099213,3cyclictest13331-21rm02:40:281
25660992116,3cyclictest25-21ksoftirqd/100:16:321
25660992115,3cyclictest25-21ksoftirqd/102:32:091
25660992115,3cyclictest12306-21grep22:05:071
25660992114,4cyclictest25-21ksoftirqd/121:46:091
2566099211,3cyclictest9727-21ssh23:53:021
25660992112,5cyclictest10295-21if_err_ens302:05:011
2566099211,17cyclictest0-21swapper/102:56:501
25660992015,3cyclictest25-21ksoftirqd/123:22:321
25660992015,3cyclictest25-21ksoftirqd/123:22:321
25660992014,3cyclictest0-21swapper/121:35:031
25660992014,3cyclictest0-21swapper/121:35:031
25660992013,4cyclictest20825-21if_ens322:24:571
2566099201,16cyclictest27582-21ssh00:44:031
2566099201,16cyclictest0-21swapper/123:29:511
2566099201,16cyclictest0-21swapper/101:49:561
25660991913,3cyclictest10647-21rt-features23:10:031
25660991913,3cyclictest1055-21runrttasks00:54:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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