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2025-09-18 - 06:22
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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 rackcslot2.osadl.org (updated Thu Sep 18, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2069126955,9sleep10-21swapper/119:06:251
2062026654,8sleep00-21swapper/019:05:390
13812650,0sleep00-21swapper/022:39:280
20948993712,24cyclictest97750irq/106-eth1-rx22:49:541
20948993712,24cyclictest0-21swapper/123:38:511
20948993636,0cyclictest0-21swapper/121:11:291
20948993510,24cyclictest0-21swapper/123:34:221
20948993434,0cyclictest0-21swapper/123:49:311
2094899340,7cyclictest0-21swapper/121:45:131
188272340,2sleep02094799cyclictest23:51:390
20948993210,21cyclictest0-21swapper/122:10:361
20948993210,21cyclictest0-21swapper/120:42:341
20947993124,6cyclictest19317-21snmpd23:53:090
20948993010,19cyclictest0-21swapper/121:37:251
2094899300,4cyclictest0-21swapper/121:21:211
2094899296,2cyclictest21881-21ssh21:35:391
2094899292,7cyclictest0-21swapper/100:02:551
20947992922,5cyclictest13204-21apache219:17:270
20948992811,16cyclictest0-21swapper/120:17:301
20947992818,7cyclictest636-21nscd21:52:270
20947992810,17cyclictest0-21swapper/023:19:150
36152270,1sleep02094799cyclictest00:16:570
2094899272,6cyclictest32493-21/usr/sbin/munin22:37:321
20948992722,2cyclictest0-21swapper/123:23:161
20948992710,1cyclictest0-21swapper/120:37:331
20948992710,11cyclictest0-21swapper/122:24:271
2094899263,5cyclictest12182-21ls00:27:371
2094899262,6cyclictest0-21swapper/100:22:251
2094899261,2cyclictest0-21swapper/119:41:221
2094899260,6cyclictest0-21swapper/123:27:221
20947992611,6cyclictest0-21swapper/019:42:250
2094799260,4cyclictest0-21swapper/000:04:250
2094899256,5cyclictest30603-21nscd22:05:381
20948992524,0cyclictest0-21swapper/121:56:331
20948992518,3cyclictest16283-21sh23:01:471
20947992523,1cyclictest0-21swapper/022:19:180
2094799251,1cyclictest0-21swapper/023:33:380
2094799250,4cyclictest0-21swapper/021:25:400
2094899242,13cyclictest0-21swapper/121:59:471
20948992418,4cyclictest13204-21apache222:13:201
20948992410,7cyclictest0-21swapper/100:09:161
20948992410,1cyclictest0-21swapper/123:14:401
20948992410,10cyclictest0-21swapper/100:00:551
2094899240,6cyclictest19317-21snmpd22:47:051
2094799240,23cyclictest0-21swapper/020:32:300
2094799240,22cyclictest0-21swapper/000:31:310
20948992320,3cyclictest13204-21apache200:34:371
2094899231,6cyclictest1111-21runrttasks19:29:091
20948992311,8cyclictest15873-21kworker/u4:223:07:271
20948992310,8cyclictest0-21swapper/120:07:351
2094899230,10cyclictest0-21swapper/100:16:431
2094799234,18cyclictest0-21swapper/023:02:260
20947992320,2cyclictest13204-21apache220:47:170
2094799230,9cyclictest0-21swapper/019:57:240
2094799230,1cyclictest26274-21sed21:42:130
2094799230,1cyclictest0-21swapper/022:27:570
2094899223,7cyclictest13245-21ls21:22:331
2094899223,11cyclictest0-21swapper/119:47:281
20948992217,4cyclictest13204-21apache223:46:481
20948992217,4cyclictest13204-21apache223:21:311
2094899221,6cyclictest13794-21df_inode20:12:271
20948992213,8cyclictest636-21nscd22:31:271
20947992220,1cyclictest13231-21apache219:28:100
20947992217,4cyclictest13204-21apache200:18:130
20947992216,4cyclictest0-21swapper/000:00:480
20947992213,6cyclictest0-21swapper/022:22:310
20947992213,3cyclictest636-21nscd23:25:110
2094799221,20cyclictest8883-21ssh00:22:350
20947992210,7cyclictest0-21swapper/000:34:210
20947992210,5cyclictest0-21swapper/019:07:310
20947992210,4cyclictest0-21swapper/022:53:530
20948992115,4cyclictest13204-21apache222:33:161
20948992110,6cyclictest0-21swapper/121:51:061
20948992110,4cyclictest0-21swapper/121:12:181
20948992110,2cyclictest0-21swapper/121:27:451
2094899210,5cyclictest0-21swapper/123:54:041
2094799219,7cyclictest636-21nscd22:08:390
20947992113,6cyclictest852-21latency_hist21:07:130
20947992111,4cyclictest0-21swapper/022:12:260
20947992110,7cyclictest0-21swapper/020:12:350
20947992110,6cyclictest0-21swapper/022:33:480
20947992110,5cyclictest0-21swapper/023:41:050
20947992110,1cyclictest0-21swapper/022:45:410
2094799210,11cyclictest0-21swapper/020:27:300
2094899208,10cyclictest0-21swapper/119:12:281
2094899204,9cyclictest0-21swapper/123:02:341
20948992013,6cyclictest12656-21sh22:56:371
20948992013,5cyclictest887-21latency_hist21:07:131
2094799207,4cyclictest0-21swapper/020:12:130
2094799202,8cyclictest0-21swapper/021:07:270
20947992020,0cyclictest0-21swapper/022:47:320
2094799201,3cyclictest0-21swapper/023:00:350
20947992010,4cyclictest0-21swapper/023:27:260
2094799192,11cyclictest0-21swapper/021:27:320
20947991913,4cyclictest13231-21apache200:08:030
20947991910,6cyclictest0-21swapper/020:24:070
20947991910,5cyclictest0-21swapper/021:19:440
20947991910,3cyclictest0-21swapper/021:32:270
504721810,0sleep00-21swapper/021:58:060
3035621810,0sleep00-21swapper/020:53:560
2094899188,5cyclictest5263-21/usr/sbin/munin00:17:351
2094899185,7cyclictest0-21swapper/120:47:371
2094899183,11cyclictest0-21swapper/119:52:251
2094899182,9cyclictest0-21swapper/120:22:321
20948991810,8cyclictest0-21swapper/120:27:321
20948991810,4cyclictest0-21swapper/120:02:311
20948991810,1cyclictest0-21swapper/120:52:251
2094799185,8cyclictest0-21swapper/022:02:290
2094799181,1cyclictest20147-21/usr/sbin/munin23:07:300
20947991810,5cyclictest0-21swapper/023:44:540
20947991810,3cyclictest0-21swapper/023:12:260
20947991810,3cyclictest0-21swapper/019:37:150
1757021810,0sleep10-21swapper/122:17:261
2842721710,0sleep00-21swapper/019:26:390
2627321710,1sleep10-21swapper/119:19:111
2094899173,4cyclictest0-21swapper/119:32:311
2094899172,8cyclictest0-21swapper/119:42:301
20948991714,0cyclictest231ktimersoftd/119:10:101
2094799176,5cyclictest0-21swapper/019:32:310
20947991717,0cyclictest0-21swapper/020:02:280
20947991710,6cyclictest0-21swapper/020:45:540
20947991710,4cyclictest0-21swapper/021:52:000
20947991710,2cyclictest0-21swapper/021:42:230
2094899163,5cyclictest0-21swapper/119:22:221
20948991610,1cyclictest0-21swapper/119:57:271
2094799162,9cyclictest0-21swapper/020:37:240
20947991611,2cyclictest24058-21timerwakeupswit19:12:370
20947991610,4cyclictest0-21swapper/019:54:350
2094799160,5cyclictest4869-21sh21:12:260
2094899151,6cyclictest0-21swapper/120:32:251
20948991510,2cyclictest0-21swapper/120:57:301
2094799154,8cyclictest0-21swapper/020:17:320
2094799151,7cyclictest0-21swapper/019:47:270
20947991510,1cyclictest0-21swapper/020:57:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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