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2025-10-14 - 02:30
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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 the 792 highest latencies:
System rackaslot8.osadl.org (updated Mon Oct 13, 2025 12:44:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
14462320292,17sleep20-21swapper/207:09:342
12052276212,23sleep30-21swapper/307:06:263
11972262229,21sleep00-21swapper/007:06:180
11512255222,21sleep10-21swapper/107:05:431
235592590,0sleep00-21swapper/010:57:210
89862560,0sleep20-21swapper/210:45:042
53642550,1sleep10-21swapper/109:20:211
116472180,0sleep20-21swapper/212:30:162
136542150,0sleep30-21swapper/308:45:163
7702140,0sleep20-21swapper/211:57:002
196782120,0sleep10-21swapper/111:20:191
17652290,0sleep10-21swapper/112:35:031
15989991,2cyclictest19982-21systemd-journal10:04:513
15989990,8cyclictest5553-21cat10:15:003
15909995,3cyclictest19982-21systemd-journal09:10:001
15909990,3cyclictest9948-21ssh11:12:461
15989985,2cyclictest508-21dbus-daemon12:22:063
15989984,3cyclictest7583-21smart_sda11:10:213
15989984,3cyclictest19982-21systemd-journal07:47:103
15989984,3cyclictest19982-21systemd-journal07:47:103
15989984,2cyclictest19982-21systemd-journal07:40:173
15989983,3cyclictest19982-21systemd-journal12:12:313
15989983,3cyclictest19982-21systemd-journal09:26:273
15989983,3cyclictest19982-21systemd-journal07:50:413
15949984,3cyclictest19982-21systemd-journal11:37:282
15949982,3cyclictest3526-21cron09:20:002
15909984,3cyclictest19982-21systemd-journal12:33:371
15909983,3cyclictest19982-21systemd-journal10:50:001
15909983,3cyclictest19982-21systemd-journal10:29:531
15869984,3cyclictest508-21dbus-daemon09:35:000
15869984,3cyclictest508-21dbus-daemon09:10:000
15869983,1cyclictest3727-21turbostat11:35:010
15869980,7cyclictest8574-21ssh10:44:440
3425270,0sleep00-21swapper/011:07:170
32728270,2sleep024384-21diskmemload12:21:050
32374270,0sleep30-21swapper/311:56:133
27085270,0sleep00-21swapper/011:52:370
21391270,0sleep00-21swapper/011:21:340
15989974,2cyclictest508-21dbus-daemon12:17:563
15989973,3cyclictest508-21dbus-daemon10:00:023
15989973,3cyclictest32278-21packagekitd11:05:033
15989973,3cyclictest30654-21snmpd08:34:053
15989973,3cyclictest19982-21systemd-journal12:09:103
15989973,3cyclictest19982-21systemd-journal09:40:143
15989973,3cyclictest19982-21systemd-journal09:33:333
15989973,3cyclictest19982-21systemd-journal09:09:223
15989973,3cyclictest19116-21gdbus11:50:013
15989973,3cyclictest0-21swapper/311:35:133
15989973,3cyclictest0-21swapper/310:54:273
15989973,2cyclictest19982-21systemd-journal07:15:263
15989973,1cyclictest0-21swapper/312:38:013
15989972,4cyclictest0-21swapper/310:36:083
15949974,2cyclictest5836-21cron11:10:002
15949974,2cyclictest508-21dbus-daemon10:15:202
15949974,2cyclictest19158-21irqstats10:25:162
15949974,2cyclictest11736-21in:imuxsock09:07:162
15949973,3cyclictest508-21dbus-daemon09:25:122
15949973,3cyclictest508-21dbus-daemon08:54:462
15949973,3cyclictest508-21dbus-daemon07:30:012
15949973,3cyclictest29741-11brltty12:20:512
15949973,3cyclictest29741-11brltty09:35:382
15949973,3cyclictest25105-21grep10:30:142
15949973,3cyclictest19225-21seq08:55:382
15949973,2cyclictest19982-21systemd-journal12:26:422
15949973,1cyclictest0-21swapper/211:34:452
15949972,3cyclictest19982-21systemd-journal08:43:042
15949970,3cyclictest20344-21memory10:00:182
15909974,2cyclictest508-21dbus-daemon09:12:161
15909974,2cyclictest18750irq/134-ahci[0008:00:011
15909973,3cyclictest30654-21snmpd08:55:111
15909973,3cyclictest19982-21systemd-journal12:01:371
15909973,3cyclictest19982-21systemd-journal11:00:201
15909973,3cyclictest19982-21systemd-journal09:59:261
15909973,3cyclictest1-21systemd08:00:201
15909973,1cyclictest0-21swapper/111:56:091
15909973,1cyclictest0-21swapper/111:05:521
15909973,1cyclictest0-21swapper/110:55:091
15909973,1cyclictest0-21swapper/109:39:381
15909973,1cyclictest0-21swapper/109:18:241
15909972,1cyclictest0-21swapper/111:50:181
15909972,1cyclictest0-21swapper/107:40:011
15909970,4cyclictest8152-21munin-run08:35:001
15869974,2cyclictest11736-21in:imuxsock11:27:270
15869973,3cyclictest7127-21ntpq08:30:160
15869973,3cyclictest508-21dbus-daemon09:59:510
15869973,3cyclictest4438-21tune2fs09:20:150
15869973,3cyclictest391-21ntpq08:15:210
15869973,3cyclictest24532-21/usr/sbin/munin10:30:210
15869973,3cyclictest19982-21systemd-journal10:11:070
15869973,3cyclictest13547-21cat10:20:190
15869973,3cyclictest11101-21cron07:30:010
15869973,3cyclictest10250-21fschecks_time11:40:160
15869973,3cyclictest0-21swapper/009:50:590
15869973,1cyclictest0-21swapper/012:16:320
15869973,1cyclictest0-21swapper/011:36:210
15869973,1cyclictest0-21swapper/010:02:440
15869972,3cyclictest7661-21lldpd07:55:180
15869972,3cyclictest19982-21systemd-journal08:00:440
11101270,0sleep20-21swapper/212:05:132
15989964,1cyclictest34-21ksoftirqd/307:35:013
15989963,2cyclictest5789-21taskset08:28:403
15989963,2cyclictest34-21ksoftirqd/309:46:163
15989963,2cyclictest34-21ksoftirqd/309:46:163
15989963,2cyclictest30654-21snmpd12:00:153
15989963,2cyclictest29075-21chrt08:06:123
15989963,2cyclictest27159-21idleruntime-cro08:05:013
15989963,2cyclictest26658-21rm09:10:463
15989963,2cyclictest25644-21rm10:05:033
15989963,2cyclictest21562-21expr09:00:213
15989963,2cyclictest15957-21tr08:50:163
15989963,2cyclictest0-21swapper/311:41:383
15989962,3cyclictest4975-21cat12:25:163
15989962,3cyclictest30702-21which08:10:203
15989962,3cyclictest30654-21snmpd11:21:313
15989962,3cyclictest30654-21snmpd08:37:053
15989962,3cyclictest30654-21snmpd08:15:503
15989962,3cyclictest30654-21snmpd07:37:583
15989962,3cyclictest30654-21snmpd07:20:183
15989962,3cyclictest30654-21snmpd07:12:043
15989962,3cyclictest23234-21expr07:55:143
15989962,3cyclictest22774-21open_inodes09:35:203
15989962,3cyclictest12880-21cat11:15:183
15989962,3cyclictest0-21swapper/311:30:043
15989962,3cyclictest0-21swapper/310:56:323
15989962,3cyclictest0-21swapper/310:43:113
15989962,3cyclictest0-21swapper/310:21:503
15989962,3cyclictest0-21swapper/309:24:583
15989962,2cyclictest19982-21systemd-journal12:31:153
15989962,1cyclictest0-21swapper/311:50:563
15989962,1cyclictest0-21swapper/309:15:173
15989961,3cyclictest19982-21systemd-journal10:46:053
15989961,3cyclictest19982-21systemd-journal10:30:553
15989960,3cyclictest6519-21rm10:15:163
15989960,3cyclictest29842-21rm11:02:523
15989960,3cyclictest27661-21rm11:26:493
15989960,3cyclictest19764-21rm10:25:213
15989960,2cyclictest7625-21/usr/sbin/munin09:50:153
15949966,0cyclictest0-21swapper/211:50:052
15949963,2cyclictest8222-21threads07:20:212
15949963,2cyclictest668-21runrttasks10:36:552
15949963,2cyclictest6275-21taskset07:15:372
15949963,2cyclictest30654-21snmpd07:53:402
15949963,2cyclictest29741-11brltty08:02:122
15949963,2cyclictest26825-21sshd09:10:562
15949963,2cyclictest22637-21sh10:56:062
15949963,2cyclictest20707-21gltestperf09:00:162
15949963,2cyclictest12612-21cron08:49:562
15949963,2cyclictest11736-21in:imuxsock11:00:202
15949963,2cyclictest0-21swapper/210:20:112
15949962,3cyclictest8473-21expr09:50:192
15949962,3cyclictest508-21dbus-daemon07:40:012
15949962,3cyclictest30654-21snmpd12:10:002
15949962,3cyclictest30654-21snmpd10:50:062
15949962,3cyclictest30654-21snmpd07:42:042
15949962,3cyclictest30654-21snmpd07:30:552
15949962,3cyclictest28675-21ls09:40:172
15949962,3cyclictest19730-21awk11:20:192
15949962,3cyclictest19538-21proc_pri07:45:162
15949962,3cyclictest19538-21proc_pri07:45:162
15949962,3cyclictest19116-21gdbus07:15:012
15949962,3cyclictest17265-21cat11:45:162
15949962,3cyclictest0-21swapper/210:05:232
15949962,1cyclictest0-21swapper/212:00:042
15949962,1cyclictest0-21swapper/211:15:202
15949962,1cyclictest0-21swapper/210:40:162
15949962,1cyclictest0-21swapper/210:11:092
15949962,1cyclictest0-21swapper/209:55:062
15949962,1cyclictest0-21swapper/209:48:032
15949962,1cyclictest0-21swapper/209:48:022
15949962,1cyclictest0-21swapper/209:24:072
15949961,3cyclictest502-21systemd-logind12:15:262
15949961,3cyclictest502-21systemd-logind08:38:542
15949961,3cyclictest19982-21systemd-journal08:22:382
15949961,2cyclictest9712-21ssh11:12:292
15949960,3cyclictest25931-21sendmail_mailqu11:25:222
15949960,3cyclictest19982-21systemd-journal12:35:022
15949960,0cyclictest0-21swapper/211:43:132
15949960,0cyclictest0-21swapper/209:30:182
15909964,1cyclictest69512sleep112:26:351
15909963,2cyclictest6281-21tune2fs10:15:161
15909963,2cyclictest508-21dbus-daemon08:38:051
15909963,2cyclictest3532-21seq08:23:231
15909963,2cyclictest25946-21sshd12:16:111
15909963,2cyclictest20384-21sshd07:49:231
15909963,2cyclictest20384-21sshd07:49:221
15909963,2cyclictest20246-21sh12:12:041
15909963,2cyclictest16521-21cpu11:45:131
15909963,2cyclictest11736-21in:imuxsock08:26:231
15909962,3cyclictest9805-21if_enp4s007:25:181
15909962,3cyclictest508-21dbus-daemon11:19:571
15909962,3cyclictest3164-21awk09:45:221
15909962,3cyclictest3164-21awk09:45:221
15909962,3cyclictest30654-21snmpd11:25:131
15909962,3cyclictest30654-21snmpd10:40:361
15909962,3cyclictest30654-21snmpd09:42:191
15909962,3cyclictest30654-21snmpd08:10:441
15909962,3cyclictest30654-21snmpd07:50:521
15909962,3cyclictest1976-21expr07:10:141
15909962,3cyclictest12057-21cat07:30:171
15909962,1cyclictest0-21swapper/112:22:061
15909962,1cyclictest0-21swapper/111:30:511
15909962,1cyclictest0-21swapper/110:50:231
15909962,1cyclictest0-21swapper/110:38:111
15909962,1cyclictest0-21swapper/110:24:211
15909962,1cyclictest0-21swapper/110:05:431
15909962,1cyclictest0-21swapper/110:00:331
15909962,1cyclictest0-21swapper/109:51:581
15909962,1cyclictest0-21swapper/109:30:131
15909961,4cyclictest11856-21cut08:40:211
15909961,3cyclictest7661-21lldpd11:35:181
15909961,3cyclictest19982-21systemd-journal08:45:091
15909961,3cyclictest19982-21systemd-journal07:40:051
15909960,6cyclictest0-21swapper/109:27:291
15909960,5cyclictest15385-21/usr/sbin/munin08:50:211
15909960,3cyclictest8978-21cat07:25:011
15909960,0cyclictest0-21swapper/110:34:301
15869966,0cyclictest0-21swapper/012:10:150
15869963,2cyclictest9665-21ssh09:25:100
15869963,2cyclictest8234-21sh10:16:110
15869963,2cyclictest508-21dbus-daemon08:20:070
15869963,2cyclictest30961-21sh09:41:540
15869963,2cyclictest29741-11brltty11:12:510
15869963,2cyclictest21587-21sh09:35:050
15869963,2cyclictest19982-21systemd-journal08:10:010
15869963,2cyclictest18391-21acpi10:25:120
15869963,2cyclictest16356-21cat07:40:140
15869963,2cyclictest14840-21ssh11:16:110
15869963,2cyclictest11736-21in:imuxsock12:25:020
15869963,2cyclictest11736-21in:imuxsock09:00:030
15869963,2cyclictest0-21swapper/011:00:270
15869963,1cyclictest0-21swapper/012:31:050
15869962,3cyclictest9455-21expr10:45:140
15869962,3cyclictest5735-21cat12:00:210
15869962,3cyclictest508-21dbus-daemon08:46:240
15869962,3cyclictest4567-21ntp_states07:15:020
15869962,3cyclictest30654-21snmpd08:42:020
15869962,3cyclictest30654-21snmpd08:35:110
15869962,3cyclictest30654-21snmpd07:32:590
15869962,3cyclictest30654-21snmpd07:20:570
15869962,3cyclictest30373-21apt10:35:130
15869962,3cyclictest29864-21sort11:55:110
15869962,3cyclictest29741-11brltty08:10:570
15869962,3cyclictest26102-21expr10:05:150
15869962,3cyclictest25962-21sensors_temp09:10:220
15869962,3cyclictest20627-21sshd12:36:130
15869962,3cyclictest17293-21memory11:45:160
15869962,3cyclictest16617-21smartctl08:50:210
15869962,3cyclictest14583-21cat07:35:170
15869962,3cyclictest11736-21in:imuxsock07:47:350
15869962,3cyclictest11736-21in:imuxsock07:47:350
15869962,1cyclictest0-21swapper/012:05:110
15869962,1cyclictest0-21swapper/010:50:110
15869962,1cyclictest0-21swapper/009:17:250
15869961,3cyclictest19982-21systemd-journal08:25:090
15869961,3cyclictest19982-21systemd-journal07:12:580
15869961,2cyclictest3735-21ssh09:45:580
15869961,2cyclictest3735-21ssh09:45:580
15869960,6cyclictest0-21swapper/008:55:160
15989953,1cyclictest51850irq/136-enp4s0-07:25:163
15989952,2cyclictest10960-21cat08:40:133
15989951,3cyclictest2691-21/usr/sbin/munin08:20:223
15989951,3cyclictest18020-21diskstats08:55:153
15949953,1cyclictest4463-21grep08:25:152
15949952,2cyclictest6563-21entropy08:30:122
15949952,2cyclictest32527-21basename08:15:182
15949952,2cyclictest27609-21cstates08:05:132
15949952,2cyclictest22905-21chrt07:55:072
15949951,2cyclictest19982-21systemd-journal08:10:072
15909953,1cyclictest11464-21if_err_enp4s012:05:151
15909953,1cyclictest0-21swapper/111:40:051
15909952,2cyclictest4106-21processes07:15:011
15909952,2cyclictest31887-21cpu08:15:161
15909952,2cyclictest31698-21sh10:10:021
15909952,2cyclictest27789-21expr08:05:131
15909952,2cyclictest21506-21sed09:00:211
15869952,2cyclictest21189-21fschecks_time07:50:150
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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