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2025-12-04 - 03:59
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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 highest latencies:
System rackcslot2.osadl.org (updated Thu Dec 04, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27502980,1sleep02749-21cron21:11:410
1587227553,17sleep10-21swapper/119:01:561
1706226957,8sleep00-21swapper/019:02:470
17616993710,0cyclictest0-21swapper/021:17:020
17617993321,12cyclictest17956-21kworker/1:023:16:131
1761799321,26cyclictest0-21swapper/122:17:011
17616993110,20cyclictest0-21swapper/021:57:490
17616992914,6cyclictest18540-21snmpd00:29:340
17617992810,14cyclictest0-21swapper/123:41:511
1761799280,27cyclictest691-21apache_processe19:46:521
17616992821,5cyclictest31327-21diskmemload23:12:390
1761699280,6cyclictest22824-21ssh21:37:100
17617992710,15cyclictest0-21swapper/121:59:541
17616992710,2cyclictest0-21swapper/022:46:320
1761799260,25cyclictest32480-21kworker/u4:123:18:371
17617992519,5cyclictest13973-21apache222:12:331
17617992510,5cyclictest28757-21latency_hist00:01:401
17617992510,11cyclictest0-21swapper/122:37:421
1761699253,3cyclictest0-21swapper/000:26:300
17617992417,6cyclictest13960-21apache223:37:541
17617992410,3cyclictest0-21swapper/100:12:171
1761799240,3cyclictest0-21swapper/121:32:001
17616992410,11cyclictest0-21swapper/022:22:290
17617992323,0cyclictest0-21swapper/119:38:321
17617992321,2cyclictest0-21swapper/122:44:511
1761799231,22cyclictest20633-21ssh00:35:441
17617992310,8cyclictest0-21swapper/100:11:311
1761699237,11cyclictest0-21swapper/019:11:540
1761699234,11cyclictest0-21swapper/020:21:500
17616992313,7cyclictest13973-21apache223:53:520
17616992311,7cyclictest0-21swapper/023:34:460
17616992310,2cyclictest0-21swapper/022:50:050
17616992310,10cyclictest13960-21apache223:43:490
17617992216,4cyclictest31530-21sh21:06:491
17617992213,4cyclictest0-21swapper/100:01:561
17617992211,5cyclictest0-21swapper/120:32:011
17617992210,0cyclictest0-21swapper/123:48:291
1761799220,21cyclictest9051-21kworker/1:121:27:491
1761699225,10cyclictest0-21swapper/020:11:570
17616992217,5cyclictest13973-21apache221:43:420
17616992211,3cyclictest0-21swapper/019:56:570
17616992210,8cyclictest0-21swapper/000:35:060
17616992210,5cyclictest0-21swapper/021:01:590
17616992210,4cyclictest0-21swapper/022:37:100
1761699220,14cyclictest0-21swapper/000:10:080
1761799213,10cyclictest23325-21munin-run19:21:411
1761799213,10cyclictest0-21swapper/119:21:511
1761799212,5cyclictest0-21swapper/121:41:581
17617992114,5cyclictest13960-21apache220:47:001
17617992112,4cyclictest0-21swapper/120:36:591
17617992110,7cyclictest0-21swapper/120:26:531
17617992110,3cyclictest0-21swapper/121:46:541
17616992119,2cyclictest13960-21apache200:02:160
17616992115,5cyclictest13032-21ssh21:25:120
17616992113,6cyclictest636-21nscd00:14:310
17616992113,3cyclictest9614-21grep20:07:010
17616992110,9cyclictest0-21swapper/000:20:570
17616992110,7cyclictest0-21swapper/019:06:530
17616992110,4cyclictest0-21swapper/022:08:520
1761699210,20cyclictest0-21swapper/019:27:010
1564822110,0sleep00-21swapper/022:12:090
229032200,3sleep123073-21/usr/sbin/munin20:42:001
1761799209,7cyclictest12143-21kworker/u4:221:25:311
1761799205,11cyclictest0-21swapper/120:21:511
17617992019,0cyclictest31327-21diskmemload23:02:061
17617992017,2cyclictest13960-21apache221:12:151
17617992013,6cyclictest13960-21apache223:34:541
17617992011,5cyclictest0-21swapper/100:16:531
17617992010,7cyclictest0-21swapper/123:00:231
17617992010,6cyclictest675-21nscd21:19:221
17617992010,6cyclictest0-21swapper/119:46:061
17617992010,3cyclictest0-21swapper/122:01:461
17617992010,3cyclictest0-21swapper/121:41:081
17617992010,2cyclictest0-21swapper/123:51:531
17617992010,1cyclictest0-21swapper/123:21:561
1761699203,6cyclictest0-21swapper/019:36:560
1761699202,1cyclictest0-21swapper/022:27:010
17616992014,3cyclictest81ktimersoftd/020:35:470
17616992014,2cyclictest29787-21grep21:47:030
17616992013,5cyclictest13960-21apache219:51:530
17616992012,5cyclictest13960-21apache219:21:420
1761699201,1cyclictest0-21swapper/022:32:440
17616992010,6cyclictest0-21swapper/023:26:470
17616992010,6cyclictest0-21swapper/022:21:150
17616992010,4cyclictest0-21swapper/022:53:370
17616992010,3cyclictest0-21swapper/022:06:080
1761799192,3cyclictest0-21swapper/100:27:491
17617991915,2cyclictest17614-21cyclictest21:52:501
17617991910,3cyclictest0-21swapper/122:21:491
17617991910,2cyclictest0-21swapper/123:07:441
17616991918,1cyclictest13960-21apache221:00:550
17616991911,5cyclictest13960-21apache223:19:550
17616991911,4cyclictest21187-21kworker/0:220:43:400
17616991910,3cyclictest0-21swapper/021:27:010
17616991910,0cyclictest0-21swapper/023:47:500
1761699190,7cyclictest0-21swapper/019:16:530
1638321910,0sleep00-21swapper/022:58:130
397421810,0sleep10-21swapper/119:52:291
1761799186,10cyclictest0-21swapper/122:46:521
17617991817,1cyclictest0-21swapper/121:02:241
17617991813,5cyclictest15686-21munin-node19:12:121
17617991810,1cyclictest0-21swapper/122:51:531
1761699187,6cyclictest0-21swapper/021:51:520
1761699185,4cyclictest31327-21diskmemload21:31:550
17616991810,5cyclictest0-21swapper/021:16:040
17616991810,2cyclictest0-21swapper/023:56:470
17616991810,2cyclictest0-21swapper/023:06:470
974621710,0sleep10-21swapper/120:07:391
2799321710,0sleep10-21swapper/122:30:371
1761799174,8cyclictest0-21swapper/123:26:561
1761799174,5cyclictest25725-21apache_volume20:51:541
1761799173,8cyclictest0-21swapper/120:56:581
1761799172,7cyclictest0-21swapper/122:31:541
17617991710,4cyclictest0-21swapper/120:12:281
17617991710,2cyclictest0-21swapper/120:03:141
17617991710,1cyclictest0-21swapper/119:27:291
1761799170,9cyclictest0-21swapper/100:21:591
1761699175,6cyclictest0-21swapper/020:01:550
1761699174,6cyclictest0-21swapper/020:49:270
17616991712,1cyclictest0-21swapper/019:41:560
1761699171,13cyclictest17316-21tail20:27:010
17616991710,4cyclictest0-21swapper/023:38:340
17616991710,3cyclictest0-21swapper/019:31:530
17617991613,1cyclictest97750irq/106-eth1-rx22:11:231
17617991613,1cyclictest13973-21apache220:19:531
17617991610,2cyclictest0-21swapper/119:31:531
17616991610,3cyclictest0-21swapper/023:01:510
17616991610,2cyclictest817-21apache220:51:420
17616991610,1cyclictest0-21swapper/023:23:460
17617991510,2cyclictest0-21swapper/119:08:481
17616991514,1cyclictest17614-21cyclictest20:16:590
17617991410,2cyclictest0-21swapper/119:58:461
17616991410,2cyclictest0-21swapper/020:36:530
17616991410,1cyclictest0-21swapper/019:46:520
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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