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2026-09-19 - 07:46
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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 rack1slot2.osadl.org (updated Sat Sep 19, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
441626056,0sleep10-21swapper/119:31:351
435824031,0sleep20-21swapper/219:30:562
419323828,0sleep30-21swapper/319:29:003
415822824,0sleep00-21swapper/019:28:330
46209973,0cyclictest7899-21timerwakeupswit20:38:312
46209963,0cyclictest7831-21grep22:03:252
46209963,0cyclictest7070-21sh22:58:282
46209963,0cyclictest3440-21python22:18:282
46209963,0cyclictest32188-21tune2fs22:38:212
46209963,0cyclictest31844-21irqstats20:58:242
46209963,0cyclictest25241-21diskstats21:38:182
46209963,0cyclictest25085-21iostat_ios00:08:232
46209963,0cyclictest18603-21cut23:43:272
46209963,0cyclictest14714-21diskstats22:28:212
46209963,0cyclictest12988-21perl20:23:192
46209963,0cyclictest11506-21hddtemp_smartct00:38:222
46209963,0cyclictest11053-21grep23:38:272
46209962,0cyclictest0-21swapper/200:53:262
46209960,0cyclictest0-21swapper/223:53:312
46189960,0cyclictest0-21swapper/023:09:020
339960,0migration/33060-21sh23:34:103
339960,0migration/320816-21latency_hist01:03:073
29805060,0irq/28-eth0-rx-8942-21tr22:03:253
29805060,0irq/28-eth0-rx-8615-21hddtemp_smartct22:43:193
29805060,0irq/28-eth0-rx-11574-21sh00:56:293
46209953,0cyclictest9420-21df_inode21:28:192
46209953,0cyclictest9395-21cat23:03:062
46209953,0cyclictest8993-21df00:18:202
46209953,0cyclictest8836-21aten2.4-expect20:43:182
46209953,0cyclictest7774-21sh22:43:172
46209953,0cyclictest6622-21sort23:58:072
46209953,0cyclictest6036-21munin-node22:23:192
46209953,0cyclictest5405-21diskstats20:18:182
46209953,0cyclictest5208-21aten2.4-expect21:03:172
46209953,0cyclictest4761-21cut19:33:062
46209953,0cyclictest32333-21sh00:13:092
46209953,0cyclictest30630-21expr20:13:182
46209953,0cyclictest28504-21sh23:33:132
46209953,0cyclictest27897-21df21:58:212
46209953,0cyclictest27706-21aten2.4-expect00:48:192
46209953,0cyclictest27056-21munin-node21:18:192
46209953,0cyclictest26962-21sed23:13:192
46209953,0cyclictest26680-21cpuspeed_turbos19:48:192
46209953,0cyclictest26639-21hostname20:33:182
46209953,0cyclictest2619-21cat23:18:062
46209953,0cyclictest24959-21tr22:53:182
46209953,0cyclictest23461-21tune2fs22:33:212
46209953,0cyclictest23357-21diskstats20:08:192
46209953,0cyclictest2323-21diskstats00:33:192
46209953,0cyclictest23197-21aten2.4-expect20:53:172
46209953,0cyclictest21881-21munin-node23:48:182
46209953,0cyclictest20883-21ssh22:13:112
46209953,0cyclictest20287-21perl21:13:192
46209953,0cyclictest19928-21ssh23:28:082
46209953,0cyclictest19509-21df_inode00:43:192
46209953,0cyclictest19413-21aten2.4-expect19:43:172
46209953,0cyclictest19402-21chrt20:28:112
46209953,0cyclictest19253-21df_inode21:53:182
46209953,0cyclictest18737-21perl23:08:192
46209953,0cyclictest18120-21perl00:23:202
46209953,0cyclictest1764-21aten2.4-expect21:23:172
46209953,0cyclictest1760-21munin-node19:53:182
46209953,0cyclictest16646-21df_inode21:33:182
46209953,0cyclictest16622-21munin-node22:48:192
46209953,0cyclictest15909-21tune2fs00:03:212
46209953,0cyclictest15901-21sed20:48:072
46209953,0cyclictest15890-21cut20:03:172
46209953,0cyclictest1331-21telnet21:43:182
46209953,0cyclictest12663-21df22:08:192
46209953,0cyclictest12414-21taskset21:08:162
46209953,0cyclictest12400-21sed19:38:182
46209953,0cyclictest12335-21wc00:58:072
46209953,0cyclictest11729-21sh23:23:192
46209953,0cyclictest10544-21grep19:58:252
46209953,0cyclictest10133-21munin-node21:48:162
46209952,0cyclictest0-21swapper/200:28:192
46199954,0cyclictest31048-21tr22:18:231
46189955,0cyclictest0-21swapper/023:53:480
46189955,0cyclictest0-21swapper/023:46:330
46189955,0cyclictest0-21swapper/023:39:080
46189955,0cyclictest0-21swapper/021:45:380
46189950,0cyclictest0-21swapper/022:34:020
46189950,0cyclictest0-21swapper/021:36:100
339950,0migration/39970-21latency_hist21:48:063
339950,0migration/38746-21taskset21:27:583
339950,0migration/37790-21kthreadcore19:33:233
339950,0migration/36098-21sh23:57:033
339950,0migration/330701-21taskset00:09:033
339950,0migration/324576-21latency_hist22:53:063
339950,0migration/323200-21kthreadcore20:28:243
339950,0migration/320677-21kthreadcore20:03:233
339950,0migration/320547-21kthreadcore21:33:243
339950,0migration/319638-21kthreadcore23:08:223
339950,0migration/319344-21aten_r1power_fr19:43:173
339950,0migration/316115-21unixbench_multi23:03:343
339950,0migration/315939-21aten_r1power_cu20:48:163
339950,0migration/315222-21latency_hist00:03:073
339950,0migration/314066-21kthreadcore19:38:233
339950,0migration/31222-21latency_hist20:38:063
339950,0migration/311184-21kthreadcore21:28:243
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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