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2026-04-02 - 17:55
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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 Apr 02, 2026 12:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2894321670,20sleep228944-21fschecks_time06:59:222
2894321670,20sleep228944-21fschecks_time06:59:222
301579911810,24cyclictest16151-21sh09:31:410
301649911464,43cyclictest19591-21threads12:19:331
30157991123,33cyclictest30158-21date07:04:040
30157991123,33cyclictest30158-21date07:04:040
301579911211,21cyclictest27840-21sh09:51:030
416221100,6sleep00-21swapper/011:54:210
301649910953,49cyclictest6227-21ssh10:09:271
301579910952,52cyclictest30149-21cyclictest12:29:440
301579910713,25cyclictest17538-21sh12:16:300
301579910713,22cyclictest20464-21sh12:21:230
301579910584,14cyclictest25980-21ssh09:49:020
30157991054,29cyclictest30287-21runrttasks10:49:260
30157991053,41cyclictest11915-21apt-get10:19:100
30157991053,26cyclictest29036-21sh10:47:510
30157991052,23cyclictest9145-21sh10:14:430
301579910344,53cyclictest15411-21cron12:13:590
30157991032,29cyclictest1440-21ssh11:49:280
30157991032,18cyclictest5095-21latency_hist09:14:040
30157991032,18cyclictest5095-21latency_hist09:14:040
30157991023,32cyclictest3286-21/usr/sbin/munin10:59:160
30157991023,32cyclictest3286-21/usr/sbin/munin10:59:160
30157991023,23cyclictest6261-21/usr/sbin/munin11:04:390
30157991022,21cyclictest23625-21cat10:39:010
30164991013,41cyclictest3045-21latency_hist10:59:011
30157991013,23cyclictest18526-21grep10:29:310
30157991013,23cyclictest18526-21grep10:29:310
3237721000,7sleep00-21swapper/009:59:170
301649910038,8cyclictest0-21swapper/110:39:221
301649910035,11cyclictest0-21swapper/109:29:011
30157991006,87cyclictest12281-21kworker/u19:1+ext4-rsv-conversion11:39:360
30157991003,30cyclictest12109-21latency_hist11:14:030
3016499993,44cyclictest28367-21cpu08:54:161
3015799996,9cyclictest0-21swapper/009:04:360
3015799993,32cyclictest11836-21latency_hist08:04:020
3015799993,30cyclictest352-21runrttasks12:25:230
3015799993,30cyclictest16113-21sed11:19:350
3015799993,30cyclictest16113-21sed11:19:350
3015799993,27cyclictest352-21runrttasks08:19:110
3015799993,25cyclictest18167-21/usr/sbin/munin11:24:100
3015799993,24cyclictest6131-21timerwakeupswit09:14:350
3015799992,25cyclictest3143-21latency_hist10:59:020
3015799983,25cyclictest13893-21cstates08:09:150
3015799983,25cyclictest13893-21cstates08:09:150
3015799974,9cyclictest21902-21apt-get08:34:100
3015799973,25cyclictest8581-21date10:14:020
3015799973,24cyclictest25318-21sh10:40:420
290372979,61sleep129041-21kernelversion06:59:261
290372979,61sleep129041-21kernelversion06:59:261
30164999643,14cyclictest17548-21latency_hist10:29:041
3015799963,24cyclictest20219-21latency_hist09:39:030
3015799963,23cyclictest15431-21runrttasks10:24:260
3015799963,22cyclictest352-21runrttasks12:05:170
30157999610,23cyclictest30998-21diskmemload09:56:270
2925629632,37sleep30-21swapper/306:59:373
2925629632,37sleep30-21swapper/306:59:373
3016499953,44cyclictest26919-21fschecks_count08:49:201
30157999533,54cyclictest0-21swapper/008:49:020
30157999533,54cyclictest0-21swapper/008:49:020
3015799953,30cyclictest3191-21cat10:04:260
3015799953,27cyclictest12206-21latency09:25:310
3015799953,22cyclictest352-21runrttasks11:48:190
3015799953,20cyclictest12430-21fschecks_count08:05:020
3015799952,30cyclictest29951-21/usr/sbin/munin08:59:280
3015799952,30cyclictest29951-21/usr/sbin/munin08:59:280
3015799952,29cyclictest8146-21rm09:19:110
3015799952,25cyclictest3980-21netstat07:29:220
30157999515,25cyclictest7490-21taskset07:45:320
3015799943,30cyclictest2952-21systemd-journal11:37:000
3015799943,26cyclictest352-21runrttasks07:54:310
3015799943,26cyclictest352-21runrttasks07:54:310
3015799943,26cyclictest28445-21cstates08:54:160
30157999336,49cyclictest0-21swapper/007:29:040
30157999336,49cyclictest0-21swapper/007:29:040
3015799933,28cyclictest22642-21ssh11:30:410
3015799933,27cyclictest16241-21timerandwakeup08:14:340
3015799933,21cyclictest297-21systemd-logind07:53:400
3015799932,27cyclictest7642-21/usr/sbin/munin11:59:360
3016499923,38cyclictest21158-21tail08:29:351
30164999220,27cyclictest5080-21sh11:54:571
3015799923,31cyclictest22960-21idleruntime-cro09:44:000
3015799923,31cyclictest22960-21idleruntime-cro09:44:000
3015799923,27cyclictest12533-21grep11:14:230
3015799922,21cyclictest5684-21latency_hist07:39:030
30174999170,13cyclictest17771-21switchtime08:19:342
3015799913,33cyclictest20490-21fschecks_time08:29:210
3015799912,31cyclictest30942-21latency_hist07:09:030
3015799912,31cyclictest30942-21latency_hist07:09:030
3015799912,25cyclictest18922-21fschecks_time08:24:220
3015799912,23cyclictest1505-21grep07:19:180
30164999013,66cyclictest27511-21rm11:39:351
3015799907,8cyclictest0-21swapper/008:49:220
3015799903,31cyclictest31721-21grep07:09:240
3015799902,22cyclictest5771-21/usr/sbin/munin07:39:220
3015799902,19cyclictest23508-21apt-get08:39:110
30164998871,10cyclictest11969-21apt-key08:04:021
3016499883,39cyclictest26529-21latency_hist08:49:011
3016499883,39cyclictest26529-21latency_hist08:49:011
30164998767,14cyclictest10305-21sh12:04:251
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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