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2025-12-21 - 16:01
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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
Characteristics of the highest latencies:
System rackdslot0.osadl.org (updated Sun Dec 21, 2025 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1857599270,1cyclictest0-21swapper/011:55:140
1857799236,16cyclictest25675-21taskset11:10:112
1857799235,16cyclictest30516-21grep08:25:172
1857799234,18cyclictest3987-21H222:10:212
18577992319,3cyclictest21250-21sendmail12:00:002
1857799231,19cyclictest0-21swapper/210:00:592
1857799225,16cyclictest4900-21cat11:30:002
1857799225,16cyclictest4795-21sed08:37:112
1857799225,16cyclictest3704-21expr10:30:152
1857799225,16cyclictest17942-21cat08:05:012
18577992219,2cyclictest28983-21df_inode11:15:152
18577992219,2cyclictest23443-21awk12:00:192
18577992219,2cyclictest11778-21awk07:50:222
18577992218,3cyclictest6764-21http_loadtime08:40:162
18577992218,3cyclictest6258-21missed_timers11:30:192
18577992218,3cyclictest30040-21sshd07:28:202
18577992218,3cyclictest16570-21sshd10:50:592
18577992218,3cyclictest15401-21cut09:55:012
18577992218,3cyclictest11221-21/usr/sbin/munin12:35:192
18576992218,3cyclictest0-21swapper/111:20:251
18576992217,3cyclictest0-21swapper/110:38:371
18576992217,3cyclictest0-21swapper/110:38:371
18576992215,3cyclictest0-21swapper/108:09:241
1857599220,18cyclictest0-21swapper/007:15:570
1857799214,2cyclictest32120-21expr11:20:142
1857799214,16cyclictest25902-21awk09:15:162
1857799214,16cyclictest2516-21taskset10:26:462
1857799214,16cyclictest22527-21cut09:10:002
1857799214,16cyclictest22383-21ls07:15:122
1857799214,16cyclictest19107-21sed08:05:182
1857799214,16cyclictest16943-21chrt09:00:072
1857799214,16cyclictest16729-21latency_hist09:00:012
1857799214,16cyclictest11332-21taskset10:43:442
1857799213,17cyclictest0-21swapper/210:45:182
18577992118,2cyclictest9393-21find11:35:212
18577992118,2cyclictest31099-21missed_timers10:20:172
18577992118,2cyclictest24590-21latency08:15:172
18577992118,2cyclictest19467-21df07:10:162
18577992118,2cyclictest0-21swapper/208:35:012
18577992117,3cyclictest0-21swapper/209:45:152
1857799210,20cyclictest843-21systemd-network08:51:232
18576992115,5cyclictest6840-21cat07:45:011
1857699210,17cyclictest0-21swapper/109:26:461
1857699210,16cyclictest17623-21awk08:05:011
1857799203,16cyclictest6806-21df10:35:132
1857799203,16cyclictest6806-21df10:35:132
1857799203,16cyclictest246312sleep209:11:522
1857799203,16cyclictest0-21swapper/208:21:592
1857799202,17cyclictest0-21swapper/212:28:092
1857799202,17cyclictest0-21swapper/212:08:162
1857799202,17cyclictest0-21swapper/207:20:212
18577992018,1cyclictest15454-21postgres11:45:562
18577992017,2cyclictest8046-21latency07:45:192
18577992017,2cyclictest3983-21H222:10:212
18577992017,2cyclictest31372sleep212:23:022
18577992017,2cyclictest31372sleep212:23:012
18577992017,2cyclictest18887-21grep10:55:202
18577992017,2cyclictest181382sleep209:55:412
18577992016,3cyclictest3981-21H222:10:212
18577992016,3cyclictest28449-21/usr/sbin/munin09:20:142
1857799200,17cyclictest0-21swapper/210:15:392
1857699203,16cyclictest21-21ksoftirqd/111:59:431
1857699203,16cyclictest11376-21date08:50:011
1857699202,3cyclictest16147-21sed08:55:231
1857699202,17cyclictest24411-21ls09:10:211
1857699202,17cyclictest1381-21sed10:25:171
18576992019,1cyclictest21-21ksoftirqd/110:53:421
18576992014,3cyclictest0-21swapper/107:57:231
1857699200,19cyclictest843-21systemd-network08:28:441
1857699200,19cyclictest0-21swapper/109:34:301
1857599203,16cyclictest14321-21cpuspeed_turbos08:55:150
1857599201,16cyclictest0-21swapper/009:30:160
1857599200,19cyclictest843-21systemd-network08:24:080
1857799193,15cyclictest4099-21H222:10:212
1857799192,1cyclictest0-21swapper/207:57:282
1857799192,16cyclictest31923-21pzem_current12:15:192
18577991917,1cyclictest0-21swapper/207:40:142
18577991916,2cyclictest4099-21H222:10:212
18577991916,2cyclictest28-21ksoftirqd/211:05:132
18577991915,3cyclictest0-21swapper/208:15:002
18577991915,3cyclictest0-21swapper/207:35:012
18577991915,3cyclictest0-21swapper/207:35:012
1857799191,17cyclictest0-21swapper/211:00:212
1857799191,17cyclictest0-21swapper/208:50:022
1857799190,16cyclictest3983-21H222:10:212
1857699192,1cyclictest0-21swapper/107:26:391
18576991917,1cyclictest21-21ksoftirqd/111:03:281
18576991917,1cyclictest17592-21grep09:00:151
18576991916,2cyclictest3983-21H222:10:211
18576991916,2cyclictest25956-21munin-run08:20:001
18576991916,1cyclictest0-21swapper/110:21:551
18576991915,3cyclictest31245-21sed11:20:011
18576991915,3cyclictest0-21swapper/112:33:291
1857699191,17cyclictest239982sleep107:15:541
1857699191,17cyclictest12000-21tr10:45:131
1857599194,1cyclictest3989-21H222:10:210
18575991916,1cyclictest0-21swapper/012:11:340
1857599190,3cyclictest0-21swapper/010:54:450
1857599190,2cyclictest3981-21H222:10:210
1857599190,18cyclictest0-21swapper/008:08:430
18577991816,1cyclictest0-21swapper/211:42:402
18577991815,2cyclictest0-21swapper/210:09:002
1857799181,16cyclictest0-21swapper/209:40:152
1857799181,16cyclictest0-21swapper/209:25:132
1857699182,15cyclictest4035-21H222:10:211
18576991817,1cyclictest21-21ksoftirqd/107:50:211
18576991816,1cyclictest21-21ksoftirqd/111:11:371
18576991816,1cyclictest0-21swapper/112:02:381
18576991816,1cyclictest0-21swapper/111:45:161
18576991816,1cyclictest0-21swapper/110:15:201
18576991816,1cyclictest0-21swapper/108:35:211
18576991815,2cyclictest3844-21/usr/sbin/munin12:25:181
18576991815,2cyclictest3705-21awk11:25:191
18576991815,2cyclictest27963-21cat12:10:131
18576991815,2cyclictest1894-21sed12:20:171
18576991815,2cyclictest1894-21sed12:20:171
18576991814,3cyclictest4099-21H222:10:211
18576991814,2cyclictest3985-21H222:10:211
1857699181,2cyclictest19971-21expr09:05:161
1857699181,16cyclictest3987-21H222:10:211
1857699181,16cyclictest30027-21run-parts09:20:211
1857699180,16cyclictest201rcuc/110:00:581
1857599182,15cyclictest0-21swapper/008:12:360
18575991816,1cyclictest9-21ksoftirqd/012:26:320
18575991816,1cyclictest9-21ksoftirqd/011:45:490
18575991816,1cyclictest9-21ksoftirqd/010:32:050
18575991816,1cyclictest9-21ksoftirqd/008:34:020
18575991816,1cyclictest0-21swapper/008:51:360
18575991816,1cyclictest0-21swapper/007:25:360
18575991815,2cyclictest14169-21munin-run10:50:020
18575991814,3cyclictest5138-21egrep11:30:150
18575991813,4cyclictest12342-21cat07:55:010
1857599180,2cyclictest4035-21H222:10:210
1857599180,2cyclictest3985-21H222:10:210
1857599180,17cyclictest399-20systemd-journal08:48:200
1857599180,17cyclictest0-21swapper/011:25:160
1857599180,16cyclictest0-21swapper/010:24:420
1857599180,15cyclictest4099-21H222:10:210
1857599180,15cyclictest4035-21H222:10:210
1857699172,1cyclictest0-21swapper/107:30:151
1857699172,1cyclictest0-21swapper/107:30:151
1857699172,14cyclictest0-21swapper/107:35:181
18576991716,1cyclictest21-21ksoftirqd/108:10:151
18576991716,1cyclictest0-21swapper/109:40:141
18576991715,1cyclictest21-21ksoftirqd/108:30:141
18576991715,1cyclictest0-21swapper/109:55:011
18576991715,1cyclictest0-21swapper/107:10:151
18576991714,2cyclictest25000-21expr07:20:131
18576991714,2cyclictest24777-21/usr/sbin/munin12:05:211
18576991714,2cyclictest11201-21expr11:40:141
18576991714,1cyclictest3979-21H222:10:211
18576991713,3cyclictest0-21swapper/109:45:161
18576991713,3cyclictest0-21swapper/107:45:201
1857699171,15cyclictest23835-21ls11:05:181
1857699171,15cyclictest21-21ksoftirqd/111:50:131
1857699171,15cyclictest0-21swapper/109:35:161
1857699170,3cyclictest0-21swapper/109:15:141
1857699170,1cyclictest3989-21H222:10:211
1857699170,16cyclictest30681-21cstates12:15:131
1857699170,16cyclictest0-21swapper/108:20:191
1857599172,14cyclictest0-21swapper/007:30:020
1857599172,14cyclictest0-21swapper/007:30:020
18575991715,1cyclictest147732sleep007:59:020
18575991714,2cyclictest9575-21expr10:40:150
18575991714,2cyclictest6634-21/usr/sbin/munin12:30:170
18575991714,2cyclictest3985-21H222:10:210
18575991714,2cyclictest3985-21H222:10:210
18575991714,2cyclictest24777-21/usr/sbin/munin12:05:130
18575991714,2cyclictest23152-21ls11:05:150
18575991714,2cyclictest10324-21/usr/sbin/munin09:45:130
18575991714,1cyclictest4035-21H222:10:210
18575991713,2cyclictest3989-21H222:10:210
18575991713,2cyclictest3989-21H222:10:210
1857599171,15cyclictest32211-21latency09:25:160
1857599170,2cyclictest830-21expr10:25:140
1857599170,2cyclictest4035-21H222:10:210
1857599170,2cyclictest3985-21H222:10:210
1857599170,2cyclictest10673-21latency_hist11:40:010
1857599170,1cyclictest3981-21H222:10:210
1857599170,16cyclictest4813-21cat07:40:150
1857599170,16cyclictest4448-21timerwakeupswit08:35:210
1857599170,16cyclictest3989-21H222:10:210
1857599170,16cyclictest3989-21H222:10:210
1857599170,16cyclictest23976-21ntpq09:10:190
1857599170,16cyclictest21825-21cut10:05:150
1857599170,16cyclictest17327-21expr09:00:140
1857599170,16cyclictest16513-21cstates09:55:160
1857599170,16cyclictest15422-21python309:55:020
1857599170,16cyclictest1478-21snapd07:45:090
1857599170,16cyclictest1477-21snapd10:00:090
1857599170,15cyclictest0-21swapper/011:40:160
18576991614,1cyclictest0-21swapper/110:55:131
1857699160,2cyclictest0-21swapper/111:30:151
1857699160,1cyclictest25826-21awk10:10:181
1857699160,15cyclictest4149-21grep10:30:161
18575991614,1cyclictest0-21swapper/009:20:010
1857599160,1cyclictest3976-21H222:10:210
1857599160,1cyclictest0-21swapper/010:15:220
1857599160,15cyclictest6207-21/usr/sbin/munin10:35:120
1857599160,15cyclictest6207-21/usr/sbin/munin10:35:120
1857599160,15cyclictest23723-21grep08:15:140
1857599160,15cyclictest20644-21latency09:05:190
1857599160,15cyclictest10190-21cat12:35:140
1857599160,15cyclictest0-21swapper/011:15:150
1857599160,15cyclictest0-21swapper/011:10:120
1857599160,15cyclictest0-21swapper/011:00:140
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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