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2026-08-10 - 18:19
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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 100 highest latencies:
System rackaslot8.osadl.org (updated Mon Aug 10, 2026 12:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
63402323296,18sleep20-21swapper/207:06:152
66222307272,22sleep10-21swapper/107:09:471
46742273241,21sleep00-21swapper/007:05:040
64652267241,17sleep30-21swapper/307:07:523
15832650,0sleep20-21swapper/208:05:212
20102620,0sleep00-21swapper/012:05:200
61982590,0sleep10-21swapper/112:08:161
173622560,0sleep30-21swapper/309:21:133
138142560,0sleep20-21swapper/210:36:122
48472200,0sleep20-21swapper/209:14:442
70802180,0sleep20-21swapper/212:28:112
273832180,0sleep00-21swapper/011:23:160
16422180,0sleep30-21swapper/310:48:513
34892170,0sleep20-21swapper/211:28:222
244472170,0sleep30-21swapper/310:23:453
201382170,0sleep30-21swapper/311:57:223
54532160,0sleep30-21swapper/312:07:433
46212150,0sleep00-21swapper/009:52:180
205402150,1sleep30-21swapper/311:00:113
94482140,0sleep20-21swapper/209:55:172
84562120,0sleep00-21swapper/010:33:310
242902120,0sleep10-21swapper/112:00:051
105272110,0sleep10-21swapper/110:15:141
209042100,2sleep122-21ksoftirqd/109:42:491
123762100,0sleep20-21swapper/211:52:492
67859996,2cyclictest28-21ksoftirqd/208:40:012
32741290,0sleep30-21swapper/309:50:133
21120290,1sleep20-21swapper/210:21:112
10005290,0sleep10-21swapper/110:53:501
67889984,3cyclictest17189-21diskstats07:30:133
67889983,1cyclictest0-21swapper/309:40:003
67859984,3cyclictest275-21systemd-journal10:10:012
67839985,2cyclictest12100-21sh12:30:401
30296280,0sleep00-21swapper/012:22:340
24405280,0sleep30-21swapper/307:45:123
67889976,1cyclictest34-21ksoftirqd/310:40:013
67889973,3cyclictest275-21systemd-journal09:55:003
67889973,1cyclictest0-21swapper/310:34:393
67889972,4cyclictest658-21snmpd10:01:433
67859973,3cyclictest9865-21/usr/sbin/munin10:15:142
67859973,3cyclictest275-21systemd-journal07:30:012
67859972,3cyclictest275-21systemd-journal11:19:352
67839976,1cyclictest658-21snmpd12:20:341
67839974,2cyclictest275-21systemd-journal11:01:361
67839973,3cyclictest658-21snmpd08:20:151
67839973,3cyclictest504-21dbus-daemon11:15:371
67779973,3cyclictest658-21snmpd09:25:550
67779973,2cyclictest275-21systemd-journal10:25:080
67779973,1cyclictest0-21swapper/012:17:020
67779973,1cyclictest0-21swapper/010:08:090
67779971,3cyclictest7476-21sensors11:30:200
67779970,3cyclictest23862-21/usr/sbin/munin07:45:180
12110270,0sleep30-21swapper/312:11:243
67889964,1cyclictest31740-21diskstats11:45:123
67889964,1cyclictest14323-21latency_hist07:25:013
67889963,2cyclictest658-21snmpd11:25:203
67889963,2cyclictest6540-21fschecks_count09:15:153
67889963,2cyclictest504-21dbus-daemon07:40:013
67889963,2cyclictest501-21in:imuxsock07:50:593
67889963,2cyclictest29715-21ssh11:44:113
67889963,2cyclictest29444-21ssh10:06:573
67889963,2cyclictest28616-21sh12:02:093
67889963,2cyclictest275-21systemd-journal08:40:193
67889963,2cyclictest2664-21sh12:25:183
67889963,2cyclictest25156-21sh09:25:463
67889963,2cyclictest21842-21mailstats08:50:203
67889963,2cyclictest14327-21cat08:35:153
67889963,2cyclictest1-21systemd08:20:193
67889963,2cyclictest10825-21ssh11:51:383
67889963,1cyclictest0-21swapper/311:30:073
67889962,3cyclictest658-21snmpd12:30:313
67889962,3cyclictest658-21snmpd12:17:573
67889962,3cyclictest658-21snmpd11:13:443
67889962,3cyclictest658-21snmpd10:59:403
67889962,3cyclictest658-21snmpd09:40:563
67889962,3cyclictest658-21snmpd09:00:453
67889962,3cyclictest658-21snmpd08:26:123
67889962,3cyclictest658-21snmpd08:15:213
67889962,3cyclictest658-21snmpd07:58:413
67889962,3cyclictest658-21snmpd07:13:383
67889962,3cyclictest32106-21ls09:30:173
67889962,3cyclictest316-21cat08:05:133
67889962,3cyclictest30572-21cat09:10:153
67889962,3cyclictest28123-21cat10:25:203
67889962,3cyclictest275-21systemd-journal09:45:033
67889962,3cyclictest25688-21cat12:20:123
67889962,3cyclictest22879-21ntpq11:20:193
67889962,3cyclictest20586-21which10:40:193
67889962,3cyclictest0-21swapper/309:05:353
67889961,4cyclictest0-21swapper/311:05:133
67889961,3cyclictest275-21systemd-journal10:50:153
67889961,3cyclictest275-21systemd-journal10:18:053
67889960,5cyclictest20422-21gpg-connect-age08:50:013
67889960,0cyclictest0-21swapper/312:37:483
67859966,0cyclictest0-21swapper/211:44:112
67859966,0cyclictest0-21swapper/210:10:442
67859964,1cyclictest11590-21munin-run10:55:012
67859963,2cyclictest658-21snmpd11:39:532
67859963,2cyclictest504-21dbus-daemon12:39:592
67859963,2cyclictest504-21dbus-daemon08:00:012
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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