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2026-04-12 - 23:09
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Sun Apr 12, 2026 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1052599247,16cyclictest21849-21mii-tool12:15:151
1052599230,5cyclictest0-21swapper/111:00:021
1052599220,18cyclictest0-21swapper/111:17:261
1052999214,13cyclictest10793-21latency_hist11:00:002
1052599210,3cyclictest0-21swapper/109:16:151
1052099202,1cyclictest0-21swapper/011:01:060
1052999192,2cyclictest21968-21chrt09:21:572
1052999192,16cyclictest376-21smtpd07:49:292
1052599192,1cyclictest0-21swapper/108:51:571
1052599190,5cyclictest0-21swapper/111:30:001
1052599190,5cyclictest0-21swapper/109:06:391
1052599190,3cyclictest0-21swapper/108:29:221
1052599190,17cyclictest426-21systemd-udevd09:48:511
1052099193,15cyclictest0-21swapper/011:06:180
10520991915,3cyclictest0-21swapper/008:29:130
10520991914,3cyclictest0-21swapper/009:25:220
1052099190,17cyclictest3976-21H222:10:210
10529991815,2cyclictest30253-21if_lxdbr008:40:162
10529991815,2cyclictest29803-21chrt07:41:132
1052999181,16cyclictest8297-21wc11:50:182
1052599183,1cyclictest0-21swapper/109:35:061
10525991816,1cyclictest0-21swapper/108:59:571
10525991816,1cyclictest0-21swapper/108:18:581
10525991816,1cyclictest0-21swapper/107:44:221
1052099182,2cyclictest28008-21grep07:40:140
10520991815,2cyclictest21626-21chrt07:28:390
10529991715,1cyclictest27375-21if_lxdbr010:30:162
10529991715,1cyclictest0-21swapper/210:10:172
10529991715,1cyclictest0-21swapper/209:34:162
10529991715,1cyclictest0-21swapper/208:47:022
10529991714,2cyclictest9898-21ls08:05:152
10529991714,2cyclictest29964-21timerwakeupswit09:35:232
10529991714,2cyclictest2990-21processes11:40:192
10529991714,2cyclictest1522-21lxd10:00:412
10529991714,2cyclictest1375-21munin-node10:28:182
10529991714,2cyclictest10160-21ntp_kernel_pll_09:00:202
1052999171,1cyclictest0-21swapper/208:55:002
1052999171,15cyclictest15748-21fschecks_count08:15:142
1052999170,3cyclictest0-21swapper/209:55:142
1052999170,2cyclictest1829-21systemd-journal09:08:392
1052999170,2cyclictest16754-21snapd10:37:482
1052999170,16cyclictest9289-21pickup11:33:422
1052999170,16cyclictest5846-21cat10:50:132
1052999170,16cyclictest4035-21H222:10:212
1052999170,16cyclictest3414-21master07:24:192
1052999170,16cyclictest25500-21fschecks_count07:35:172
1052999170,16cyclictest22834-21grep09:25:132
1052999170,16cyclictest20524-21missed_timers07:25:172
1052999170,16cyclictest2007-21systemd-journal11:18:242
1052999170,16cyclictest0-21swapper/211:00:142
1052599178,0cyclictest0-21swapper/110:29:151
10525991715,1cyclictest0-21swapper/107:25:191
10525991714,2cyclictest4267-21grep07:55:131
10525991714,2cyclictest31433-21fschecks_count11:35:171
10525991714,2cyclictest24043-21nvmesmart_nvme009:25:181
10525991714,2cyclictest19433-21sed12:10:171
10525991714,2cyclictest1601-21fschecks_count07:50:141
10525991714,2cyclictest1393-21sed12:35:221
1052599171,15cyclictest993-21dbus-daemon07:20:221
1052599171,15cyclictest0-21swapper/108:00:141
1052599170,2cyclictest8939-21grep09:00:141
1052599170,2cyclictest3450-21gsd-color07:45:191
1052599170,2cyclictest32553-21grep09:40:201
1052599170,2cyclictest27812-21expr10:30:181
1052599170,2cyclictest25476-21df07:35:161
1052599170,2cyclictest2007-21systemd-journal08:42:531
1052599170,2cyclictest14589-21cut09:10:121
1052599170,2cyclictest14589-21cut09:10:111
1052599170,2cyclictest12822-21expr08:10:141
1052599170,16cyclictest8796-21mailstats11:50:211
1052599170,16cyclictest5106-21fschecks_time09:50:151
1052599170,16cyclictest3707-21master08:30:181
1052599170,16cyclictest32523-21ls10:40:131
1052599170,16cyclictest24967-21perf11:25:011
1052599170,16cyclictest22254-21nfsd410:20:181
1052599170,16cyclictest21873-21chrt09:20:371
1052599170,16cyclictest15418-21cut10:10:001
1052599170,16cyclictest11390-21df07:10:141
10520991715,1cyclictest0-21swapper/011:40:230
10520991715,1cyclictest0-21swapper/011:33:180
10520991714,2cyclictest3954-21VM22:10:210
10520991714,2cyclictest3351-21lxd09:22:410
10520991714,2cyclictest32414-21expr12:35:140
10520991714,2cyclictest2752-21grep10:45:120
10520991714,2cyclictest27507-21sed10:30:170
10520991714,2cyclictest18823-21dpkg07:25:000
10520991714,2cyclictest18493-21nfsd411:10:180
10520991714,2cyclictest16830-21snapd09:47:230
10520991714,2cyclictest15672-21tr10:10:120
10520991714,2cyclictest13178-21cat12:00:180
1052099171,1cyclictest0-21swapper/009:05:180
1052099171,1cyclictest0-21swapper/008:18:480
1052099170,2cyclictest6333-21chrt07:59:450
1052099170,2cyclictest20735-21sort10:20:020
1052099170,2cyclictest13347-21tr08:10:170
1052099170,2cyclictest11521-21hddtemp_smartct07:10:160
1052099170,2cyclictest11134-21nfsd410:00:180
1052099170,1cyclictest0-21swapper/008:37:070
1052099170,16cyclictest584-21master11:38:400
1052099170,16cyclictest5584-21sed09:50:160
1052099170,16cyclictest4996-21cat11:45:120
1052099170,16cyclictest399-20systemd-journal12:09:550
1052099170,16cyclictest3676-21latency_hist07:55:000
1052099170,16cyclictest31803-21sed08:45:010
1052099170,16cyclictest29834-21fschecks_count12:30:130
1052099170,16cyclictest2902-21cstates08:50:130
1052099170,16cyclictest26560-21nfsd409:30:170
1052099170,16cyclictest21155-21grep11:15:180
1052099170,16cyclictest18347-21cpu12:10:120
1052099170,16cyclictest11333-21ntp_states11:55:190
1052099170,16cyclictest1085-21gdbus11:20:200
1052099170,16cyclictest0-21swapper/010:53:220
10529991614,1cyclictest7124-21expr08:00:142
10529991614,1cyclictest4882-21expr09:50:142
10529991614,1cyclictest24483-21http_loadtime08:30:182
10529991614,1cyclictest17149-21apache_volume09:15:132
10529991614,1cyclictest14389-21acpi09:10:092
10529991614,1cyclictest14389-21acpi09:10:092
10529991614,1cyclictest12711-21cat08:10:142
10529991614,1cyclictest0-21swapper/212:25:152
10529991614,1cyclictest0-21swapper/212:20:192
10529991614,1cyclictest0-21swapper/212:00:162
10529991614,1cyclictest0-21swapper/211:25:082
10529991614,1cyclictest0-21swapper/210:05:182
10529991614,1cyclictest0-21swapper/209:40:132
10529991614,1cyclictest0-21swapper/208:25:222
10529991614,1cyclictest0-21swapper/207:55:162
10529991614,1cyclictest0-21swapper/207:15:042
10529991613,2cyclictest26455-21/usr/sbin/munin08:35:122
10529991613,2cyclictest24164-21awk11:20:182
10529991613,2cyclictest21708-21fschecks_time12:15:142
1052999160,2cyclictest3921-21sed10:45:172
1052999160,1cyclictest0-21swapper/212:35:172
1052999160,1cyclictest0-21swapper/212:30:132
1052999160,1cyclictest0-21swapper/211:05:182
1052999160,15cyclictest6592-21chrt08:55:142
1052999160,15cyclictest0-21swapper/212:10:142
1052999160,15cyclictest0-21swapper/212:05:142
1052999160,15cyclictest0-21swapper/211:55:162
1052999160,15cyclictest0-21swapper/211:45:152
1052999160,15cyclictest0-21swapper/211:10:142
1052999160,15cyclictest0-21swapper/210:40:162
1052999160,15cyclictest0-21swapper/210:20:002
1052999160,15cyclictest0-21swapper/209:45:142
1052999160,15cyclictest0-21swapper/208:20:222
1052999160,15cyclictest0-21swapper/207:50:172
1052999160,15cyclictest0-21swapper/207:10:182
10525991614,1cyclictest5653-21cpuspeed_turbos10:50:141
10525991614,1cyclictest0-21swapper/112:00:161
10525991614,1cyclictest0-21swapper/111:55:141
10525991614,1cyclictest0-21swapper/111:45:141
10525991614,1cyclictest0-21swapper/111:09:591
10525991614,1cyclictest0-21swapper/110:55:121
10525991614,1cyclictest0-21swapper/110:35:171
10525991614,1cyclictest0-21swapper/107:15:161
10525991613,2cyclictest22419-21seq07:30:121
10525991613,2cyclictest19112-21vmstat11:10:231
10525991613,2cyclictest16483-21cat10:10:161
1052599160,1cyclictest449-21/usr/sbin/munin08:45:151
1052599160,1cyclictest0-21swapper/110:15:151
1052599160,15cyclictest3337-21timerandwakeup11:40:201
1052599160,15cyclictest25109-21awk12:20:171
1052599160,15cyclictest10845-21grep08:05:181
1052599160,15cyclictest10549-21fschecks_count10:00:131
1052599160,15cyclictest0-21swapper/112:30:121
1052599160,15cyclictest0-21swapper/112:25:161
1052599160,15cyclictest0-21swapper/112:05:131
1052599160,15cyclictest0-21swapper/111:30:111
1052599160,15cyclictest0-21swapper/110:45:131
1052599160,15cyclictest0-21swapper/108:35:181
1052599160,15cyclictest0-21swapper/108:20:161
10520991614,1cyclictest14082-21cstates07:15:120
10520991614,1cyclictest0-21swapper/012:25:120
10520991614,1cyclictest0-21swapper/009:55:140
10520991614,1cyclictest0-21swapper/009:35:210
10520991614,1cyclictest0-21swapper/009:15:140
10520991614,1cyclictest0-21swapper/009:10:120
10520991614,1cyclictest0-21swapper/009:10:120
10520991614,1cyclictest0-21swapper/008:00:160
10520991614,1cyclictest0-21swapper/007:48:360
10520991613,2cyclictest24000-21taskset08:30:150
1052099160,2cyclictest7329-21grep11:50:130
1052099160,2cyclictest5877-21apt-config08:55:020
1052099160,2cyclictest23761-21acpi12:20:100
1052099160,1cyclictest0-21swapper/008:06:070
1052099160,15cyclictest29222-21apt-get10:35:140
1052099160,15cyclictest26647-21awk11:25:160
1052099160,15cyclictest26124-21sed10:30:000
1052099160,15cyclictest22395-21cpuspeed_turbos07:30:130
1052099160,15cyclictest0-21swapper/012:15:110
1052099160,15cyclictest0-21swapper/010:55:110
1052099160,15cyclictest0-21swapper/010:40:130
1052099160,15cyclictest0-21swapper/009:40:140
1052099160,15cyclictest0-21swapper/008:45:140
1052099160,15cyclictest0-21swapper/008:25:020
1052099160,15cyclictest0-21swapper/007:35:190
1052999150,1cyclictest0-21swapper/211:35:152
10525991512,2cyclictest7283-21cpuspeed_turbos09:55:141
1052099150,14cyclictest0-21swapper/010:20:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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