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2026-06-25 - 16:33
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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 rackbslot7.osadl.org (updated Thu Jun 25, 2026 12:44:27)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
6505991494,72cyclictest8504-21ssh09:43:370
65139910980,19cyclictest2374-21systemd-journal12:09:321
65199910545,11cyclictest0-21swapper/210:53:212
65199910336,12cyclictest0-21swapper/211:48:562
65199910239,13cyclictest0-21swapper/208:13:232
65199910239,13cyclictest0-21swapper/208:13:232
65199910154,40cyclictest0-21swapper/208:18:452
65199910137,12cyclictest0-21swapper/209:18:482
65139910048,45cyclictest352-21runrttasks11:23:361
1223621000,7sleep20-21swapper/207:13:372
6513999939,13cyclictest10074-21latency_hist07:08:251
61222987,71sleep00-21swapper/006:55:190
6513999756,33cyclictest378-21ssh09:28:571
6519999646,15cyclictest352-21runrttasks09:07:212
6519999646,15cyclictest352-21runrttasks09:07:212
6513999637,7cyclictest0-21swapper/107:48:241
6513999625,17cyclictest0-21swapper/112:23:471
6513999625,17cyclictest0-21swapper/112:23:471
60262959,60sleep16029-21vmstat06:54:101
6513999436,13cyclictest1032-21idleruntime08:18:431
6513999429,8cyclictest0-21swapper/110:38:201
6519999338,10cyclictest0-21swapper/207:48:212
6519999323,25cyclictest18836-21seq09:59:432
6513999366,20cyclictest544-21cron09:28:211
6513999366,20cyclictest544-21cron09:28:211
6513999336,7cyclictest0-21swapper/107:48:381
6513999336,49cyclictest0-21swapper/108:28:431
6519999232,11cyclictest0-21swapper/212:03:242
6513999242,43cyclictest0-21swapper/111:38:441
651399923,33cyclictest18034-21sed09:58:481
651399923,30cyclictest8456-21/usr/sbin/munin09:43:311
6513999226,11cyclictest0-21swapper/111:13:241
651399922,35cyclictest1359-21rm12:13:411
6519999135,10cyclictest0-21swapper/211:53:392
6513999139,7cyclictest0-21swapper/112:18:521
6513999134,50cyclictest0-21swapper/107:38:561
651399913,31cyclictest6045-21ntpq09:38:481
6513999127,9cyclictest0-21swapper/109:08:511
6513999032,8cyclictest0-21swapper/112:03:591
651399902,31cyclictest12499-21latency_hist11:38:231
6513998946,36cyclictest7703-21ntp_kernel_pll_08:38:491
651399893,33cyclictest3416-21cat09:33:561
651399893,23cyclictest15182-21idleruntime-cro07:23:211
651399893,23cyclictest15182-21idleruntime-cro07:23:211
6513998930,9cyclictest0-21swapper/107:23:471
6513998929,12cyclictest0-21swapper/111:13:541
651399892,34cyclictest5811-21ssh10:33:241
6513998833,7cyclictest0-21swapper/108:33:561
651399883,36cyclictest25743-21ssh11:58:571
651399883,34cyclictest9164-21ssh10:38:401
651399882,32cyclictest31487-21latency_hist08:13:241
651399882,32cyclictest31487-21latency_hist08:13:241
651399882,32cyclictest15618-21/usr/sbin/munin11:43:301
651399882,31cyclictest21059-21ntp_offset10:03:491
651399882,31cyclictest21059-21ntp_offset10:03:491
651399873,36cyclictest19564-21latency_hist09:08:231
651399873,36cyclictest19564-21latency_hist09:08:231
651399873,35cyclictest27085-21grep09:19:151
651399873,32cyclictest23775-21taskset09:14:211
6513998726,11cyclictest0-21swapper/108:01:351
6513998713,28cyclictest12006-21latency_hist07:13:221
651399863,32cyclictest15301-21switchtime09:53:541
651399863,30cyclictest14934-21/usr/sbin/munin10:48:541
651399863,30cyclictest12509-21cat08:53:471
6513998626,12cyclictest0-21swapper/110:53:511
651399862,34cyclictest31696-21cstates08:13:381
651399862,34cyclictest31696-21cstates08:13:381
651399862,30cyclictest22406-21awk11:53:531
6513998562,14cyclictest2374-21systemd-journal11:19:321
6513998562,14cyclictest2374-21systemd-journal11:19:321
6513998527,12cyclictest0-21swapper/107:03:251
6513998527,12cyclictest0-21swapper/107:03:251
6519998424,23cyclictest0-21swapper/212:09:102
651399847,30cyclictest1-21systemd09:53:211
651399843,31cyclictest445-21cat10:23:451
651399842,29cyclictest352-21runrttasks09:00:511
651399842,22cyclictest29686-21fschecks_count10:18:421
651399842,22cyclictest29686-21fschecks_count10:18:421
651399833,32cyclictest23904-21kernelversion10:08:461
651999823,46cyclictest814-21cpu11:18:502
651999823,46cyclictest814-21cpu11:18:502
6513998237,7cyclictest0-21swapper/108:03:551
6513998132,12cyclictest0-21swapper/111:52:181
29692810,6sleep2381ktimers/210:28:302
6519998064,11cyclictest8195-21systemd-run09:43:222
6519998055,14cyclictest0-21swapper/207:03:452
651399802,31cyclictest26806-21latency_hist11:08:231
6513998020,21cyclictest25704-21proc_pri07:53:531
6505998060,14cyclictest10418-21latency_hist07:08:240
651399793,30cyclictest21482-21/usr/sbin/munin10:58:471
6505997961,11cyclictest277-21dbus-daemon10:08:220
6505997961,11cyclictest277-21dbus-daemon10:08:220
6519997857,11cyclictest0-21swapper/208:38:242
651399783,30cyclictest27102-21ssh10:13:521
6519997761,9cyclictest0-21swapper/208:23:522
6519997759,8cyclictest0-21swapper/208:28:542
6519997755,13cyclictest0-21swapper/207:23:242
6519997755,13cyclictest0-21swapper/207:23:242
6519997750,19cyclictest13397-21cron08:58:202
6505997755,10cyclictest0-21swapper/009:19:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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