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2026-07-04 - 17:22

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 highest latencies:
System rack9slot4s (updated Sat Jul 04, 2026 12:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
111119912691223,26cyclictest3390-21python08:25:271
111099911481114,30cyclictest0-21swapper/007:25:120
111119911171104,10cyclictest11281-21aten_r4power_cu07:25:121
108612663619,29sleep00-21swapper/007:23:010
109882567522,30sleep10-21swapper/107:24:191
1110999126116,7cyclictest0-21swapper/008:25:270
247512960,27sleep00-21swapper/012:15:170
126102800,8sleep01110999cyclictest08:50:240
11111997222,16cyclictest5568-21taskset08:30:561
186132690,5sleep10-21swapper/107:40:261
11111996621,14cyclictest28102-21runrttasks10:59:101
47272650,7sleep01110999cyclictest09:55:250
11111996121,14cyclictest15684-21apt-config07:35:021
11111996120,14cyclictest28210-21smartctl08:05:281
11111995920,14cyclictest14679-21smartctl08:55:281
11111995818,13cyclictest24600-21/usr/sbin/munin10:50:211
11111995722,16cyclictest10454-21cat08:45:191
11111995421,14cyclictest25492-21cpuspeed_turbos08:00:121
11111995420,10cyclictest6288-21grep12:50:271
11111995419,12cyclictest18955-21/usr/sbin/munin10:35:291
11111995417,15cyclictest28420-21sshd09:33:421
11111995321,10cyclictest19602-21df09:10:141
11111995318,14cyclictest2695-21snmpd11:34:101
11111995120,13cyclictest3362-21sshd11:19:581
11111995120,10cyclictest16295-21tail09:00:231
11111995117,12cyclictest5726-21diskstats11:25:151
11111995117,12cyclictest29299-21/usr/sbin/munin09:35:181
11111995027,19cyclictest28012-21/usr/sbin/munin12:25:221
11111995020,10cyclictest1191-21sshd12:40:081
11111995019,11cyclictest21990-21fschecks_time07:50:151
11111995019,10cyclictest31276-21awk11:05:281
11111995019,10cyclictest21501-21smartctl12:05:271
11111995019,10cyclictest18335-21uptime10:30:291
11111995019,10cyclictest15428-21iostat11:50:191
11111995018,9cyclictest621-21irqstats09:45:201
11111995018,10cyclictest14297-21smartctl07:30:171
11111995017,13cyclictest12248-21perl08:50:161
1111199500,15cyclictest3952-21aten_r4power_po09:55:111
11111994927,17cyclictest31762-21/usr/sbin/munin12:35:261
11111994919,10cyclictest9206-21wget11:35:121
11111994919,10cyclictest20904-21apt-config07:46:381
11111994919,10cyclictest18263-21ntpq09:05:261
11111994918,10cyclictest10973-21seq10:12:061
1111199490,17cyclictest27805-21runrttasks12:24:381
1111199490,12cyclictest15689-21perl10:25:191
11111994821,8cyclictest24961-21/usr/sbin/munin09:25:271
11111994818,10cyclictest2695-21snmpd11:14:011
11111994817,11cyclictest11377-21diskstats11:40:151
11111994817,10cyclictest23327-21irqstats10:45:211
11111994719,9cyclictest30085-21smartctl08:10:271
11111994718,10cyclictest8311-21df_inode08:40:141
11111994718,10cyclictest31563-21/usr/sbin/munin09:40:261
11111994718,10cyclictest22845-21perl12:10:161
11111994717,9cyclictest4238-21smartctl12:45:281
11111994716,12cyclictest22346-21/usr/sbin/munin09:15:281
1111199470,16cyclictest31412-21runrttasks12:33:051
1111199470,16cyclictest16827-21cpu11:55:131
1111199470,15cyclictest8257-21grep10:05:191
1111199470,15cyclictest14351-21chrt11:46:401
1111199470,14cyclictest4153-21iostat_ios11:20:211
11111994618,8cyclictest29057-21memory11:00:221
11111994617,10cyclictest24226-21ntpq07:55:241
1111199461,15cyclictest31440-21hddtemp_smartct08:15:171
1111199460,16cyclictest11926-21smartctl10:15:181
1111199460,15cyclictest25183-21find12:15:251
1111199460,13cyclictest24848-21wc09:25:001
1111199460,12cyclictest20250-21chrt12:04:181
1111199460,12cyclictest1956-21cut09:50:101
11111994527,13cyclictest22032-21grep10:40:311
11111994527,13cyclictest22032-21grep10:40:301
11111994517,9cyclictest11107-21cyclictest10:00:171
11111994516,11cyclictest6451-21grep08:35:141
11111994516,11cyclictest14325-21grep10:20:261
11111994227,11cyclictest2695-21snmpd08:22:191
1110999409,18cyclictest4684-21timerwakeupswit11:20:300
11109993816,7cyclictest20496-21python07:45:280
11109993810,14cyclictest31045-21aten_r4power_vo08:15:120
1110999372,22cyclictest1486-21df_inode12:40:150
1110999371,24cyclictest23395-21/usr/sbin/munin09:20:150
1110999354,4cyclictest81rcu_preempt09:30:260
1110999342,10cyclictest81rcu_preempt07:36:300
1110999341,18cyclictest17412-21latency_hist09:05:010
1110999341,14cyclictest0-21swapper/010:24:030
1110999321,4cyclictest81rcu_preempt10:04:390
11109993213,6cyclictest6260-21/usr/sbin/munin12:50:270
1110999321,16cyclictest7139-21cron11:30:000
11109993211,17cyclictest7908-21irqstats11:30:210
1110999316,13cyclictest11564-21packagekitd11:42:420
1110999313,4cyclictest40250irq/92-i91507:30:240
1110999312,15cyclictest32587-21perl11:10:170
1110999311,7cyclictest14416-21needreboot08:55:230
1110999311,4cyclictest81rcu_preempt07:43:100
11109993112,5cyclictest20197-21grep10:35:300
1110999311,14cyclictest17669-21iostat10:30:190
230752301,5sleep00-21swapper/007:53:070
1110999307,11cyclictest27823-21kernelversion08:05:210
1110999302,15cyclictest4562-21/usr/sbin/munin08:30:160
1110999301,4cyclictest81rcu_preempt12:35:540
1110999301,4cyclictest81rcu_preempt12:05:040
1110999301,4cyclictest81rcu_preempt11:59:090
1110999301,4cyclictest81rcu_preempt09:16:050
11109993012,6cyclictest13245-21df11:45:140
11109993010,6cyclictest3683-21tune2fs12:45:150
1110999292,13cyclictest18117-21memory09:05:220
1110999291,9cyclictest0-21swapper/012:30:270
1110999291,4cyclictest81rcu_preempt10:54:520
1110999291,4cyclictest81rcu_preempt10:40:440
1110999291,4cyclictest81rcu_preempt10:40:430
1110999291,3cyclictest81rcu_preempt09:43:070
1110999291,14cyclictest15516-21fschecks_count10:25:170
11109992910,6cyclictest25967-21mailstats09:25:270
94472281,5sleep00-21swapper/008:42:020
307332281,5sleep00-21swapper/008:14:340
12222281,5sleep00-21swapper/008:20:280
1110999287,6cyclictest3286-21runrttasks11:35:220
1110999281,4cyclictest81rcu_preempt09:45:300
11109992812,5cyclictest11564-21packagekitd12:00:500
1110999281,15cyclictest11565-21gdbus12:23:130
1110999281,14cyclictest2589-21python11:15:290
1110999281,14cyclictest11085-21grep08:45:290
1110999281,12cyclictest29741-21runrttasks11:01:300
89532271,5sleep00-21swapper/010:05:370
61212271,5sleep00-21swapper/008:35:070
266592271,5sleep00-21swapper/008:01:100
244092271,5sleep00-21swapper/010:49:460
237672271,5sleep00-21swapper/012:11:530
1110999272,4cyclictest81rcu_preempt09:36:070
1110999271,17cyclictest0-21swapper/007:55:190
1110999271,14cyclictest9854-21grep10:10:150
1110999271,13cyclictest20136-21grep09:10:240
1110999269,4cyclictest0-21swapper/009:50:110
11109992615,6cyclictest30683-21grep11:05:170
11109992614,8cyclictest11777-21grep10:15:160
1110999261,17cyclictest0-21swapper/011:50:570
1110999261,13cyclictest26713-21cstates10:55:130
1110999261,12cyclictest29449-21taskset12:27:090
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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