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2026-04-10 - 21:38

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #6

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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rackeslot6s.osadl.org (updated Fri Apr 10, 2026 12:44:49)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2107645999045,42cyclictest0-21swapper/010:00:110
2107649998510,29cyclictest2159486-21/usr/sbin/munin12:10:182
210764999702,45cyclictest2108469-21munin-node07:15:012
210764999702,45cyclictest2108469-21munin-node07:15:012
2107645996755,7cyclictest131ktimers/010:50:130
2107645996713,17cyclictest2131806-21apt-get09:30:010
210764599648,30cyclictest15-21rcuc/007:45:010
2107645996430,30cyclictest20650irq/252-8000000.ethernet12:05:190
2107649996018,33cyclictest0-21swapper/208:35:262
210764599603,20cyclictest12-21ksoftirqd/010:00:010
210764999598,19cyclictest0-21swapper/212:30:022
2107649995921,32cyclictest1660-21snmpd07:18:032
210764999581,49cyclictest2138101-21/usr/sbin/munin10:05:272
2107648995815,17cyclictest22-21rcuc/110:40:011
2107648995815,11cyclictest2156950-21/usr/sbin/munin11:55:171
2107648995815,11cyclictest2156950-21/usr/sbin/munin11:55:161
210764999572,47cyclictest2129468-21apt-get09:15:152
2107649995720,30cyclictest0-21swapper/210:35:272
2107648995714,13cyclictest2121872-21/usr/sbin/munin08:30:181
210764599565,40cyclictest2101814-21kworker/0:1+mm_percpu_wq07:15:010
210764599565,40cyclictest2101814-21kworker/0:1+mm_percpu_wq07:15:000
210764999553,12cyclictest2121038-21apt-get08:25:162
2107649995528,21cyclictest0-21swapper/209:50:272
2107649995524,21cyclictest0-21swapper/208:15:272
2107649995510,38cyclictest0-21swapper/211:00:202
2107645995529,23cyclictest20650irq/252-8000000.ethernet12:00:200
210764999548,36cyclictest0-21swapper/208:10:262
210764999546,40cyclictest0-21swapper/209:35:282
210764999543,43cyclictest2136408-21apt-get09:55:152
2107649995420,28cyclictest0-21swapper/209:25:262
2107649995418,28cyclictest0-21swapper/209:00:282
2107649995412,32cyclictest0-21swapper/208:45:262
2107649995326,24cyclictest2150191-21/usr/sbin/munin11:15:272
2107649995326,24cyclictest2150191-21/usr/sbin/munin11:15:272
2107649995325,23cyclictest274-21systemd-journal09:25:002
2107649995313,32cyclictest0-21swapper/212:30:282
2107649995310,35cyclictest0-21swapper/210:15:012
210764999521,8cyclictest2117007-21grep08:00:272
2107649995217,29cyclictest2141343-21grep10:20:282
2107649995217,29cyclictest2141343-21grep10:20:282
210764999521,2cyclictest2155273-21apt-get11:45:132
2107645995227,21cyclictest0-21swapper/008:35:280
2107645995224,25cyclictest20650irq/252-8000000.ethernet11:30:250
210764999515,37cyclictest2146406-21/usr/sbin/munin10:50:282
210764999513,40cyclictest2114688-21head07:45:272
2107649995126,19cyclictest0-21swapper/211:05:302
2107649995121,22cyclictest0-21swapper/210:40:272
210764999511,8cyclictest2151661-21/usr/sbin/munin11:20:272
2107649995116,27cyclictest0-21swapper/211:25:202
2107649995113,30cyclictest0-21swapper/209:30:272
210764999511,11cyclictest2152805-21diskstats11:30:172
2107645995126,21cyclictest0-21swapper/010:15:010
210764999507,35cyclictest0-21swapper/207:30:172
210764999505,38cyclictest0-21swapper/208:35:012
210764999505,37cyclictest0-21swapper/212:00:282
210764999504,36cyclictest0-21swapper/209:45:192
210764999502,7cyclictest2142023-21/usr/sbin/munin10:25:282
210764999502,7cyclictest2126053-21grep08:55:012
210764999502,11cyclictest0-21swapper/209:45:012
2107649995020,23cyclictest0-21swapper/210:55:302
210764999501,9cyclictest2156301-21grep11:50:212
2107649995018,25cyclictest0-21swapper/212:20:262
2107649995017,23cyclictest0-21swapper/207:50:222
210764999501,40cyclictest274-21systemd-journal09:10:162
210764999498,35cyclictest2124030-21/usr/sbin/munin08:40:262
210764999498,35cyclictest2124030-21/usr/sbin/munin08:40:262
210764999494,37cyclictest0-21swapper/207:35:282
210764999493,4cyclictest0-21swapper/211:45:012
210764999492,6cyclictest2110379-21grep07:20:282
210764999492,5cyclictest2153572-21/usr/sbin/munin11:35:292
210764999492,10cyclictest2117544-21/usr/sbin/munin08:05:162
2107649994918,23cyclictest0-21swapper/207:55:272
2107649994918,23cyclictest0-21swapper/207:55:272
210764999491,7cyclictest2156950-21/usr/sbin/munin11:55:272
210764999491,7cyclictest2156950-21/usr/sbin/munin11:55:272
210764999491,7cyclictest2120398-21/usr/sbin/munin08:20:222
2107648994939,5cyclictest0-21swapper/108:25:291
2107645994941,5cyclictest2150762-21grep11:15:280
2107645994941,5cyclictest2150762-21grep11:15:280
210764599492,43cyclictest2128374-21sed09:05:270
210764599492,41cyclictest0-21swapper/012:25:010
210764999483,39cyclictest0-21swapper/210:00:192
210764999483,37cyclictest2160363-21sshd12:15:152
210764999482,9cyclictest2127968-21/usr/sbin/munin09:05:202
210764999481,3cyclictest2164120-21tail12:35:252
210764999481,3cyclictest2164120-21tail12:35:252
2107648994834,9cyclictest2139702-21latency_hist10:15:011
2107645994842,4cyclictest0-21swapper/008:10:240
2107645994830,15cyclictest167350irq/118-8000000.ethernet-tx008:30:220
2107645994829,16cyclictest12-21ksoftirqd/009:35:010
2107645994825,20cyclictest20650irq/252-8000000.ethernet09:40:260
210764999475,34cyclictest0-21swapper/211:10:292
210764999475,34cyclictest0-21swapper/211:10:282
210764999473,4cyclictest2158720-21diskstats12:05:162
210764999473,34cyclictest0-21swapper/210:30:222
210764999472,7cyclictest2126660-21grep08:55:282
210764999472,35cyclictest2110978-21tail07:25:272
210764999471,4cyclictest2145102-21lsblk10:45:202
210764999471,4cyclictest2113465-21/usr/sbin/munin07:40:212
2107648994727,14cyclictest0-21swapper/111:45:281
2107648994716,25cyclictest2140369-21tr10:15:261
210764599473,40cyclictest0-21swapper/009:20:200
2107645994724,20cyclictest0-21swapper/011:05:110
2107645994723,21cyclictest20650irq/252-8000000.ethernet10:40:250
210764599471,40cyclictest2125884-21latency_hist08:55:010
2107648994628,13cyclictest22-21rcuc/111:05:011
2107645994639,4cyclictest167350irq/118-8000000.ethernet-tx011:55:120
2107645994639,4cyclictest167350irq/118-8000000.ethernet-tx011:55:120
2107645994625,19cyclictest20650irq/252-8000000.ethernet10:05:250
2107645994624,20cyclictest20650irq/252-8000000.ethernet08:25:190
2107645994624,19cyclictest20650irq/252-8000000.ethernet12:35:150
2107645994624,19cyclictest20650irq/252-8000000.ethernet12:35:150
2107645994624,19cyclictest20650irq/252-8000000.ethernet12:30:220
2107645994624,19cyclictest20650irq/252-8000000.ethernet12:15:230
2107645994624,16cyclictest131ktimers/010:35:120
2107645994623,20cyclictest20650irq/252-8000000.ethernet08:00:200
2107645994621,23cyclictest0-21swapper/007:50:120
2107645994620,24cyclictest0-21swapper/011:25:290
2107648994535,7cyclictest2119985-21munin-plugin-st08:20:001
2107648994527,10cyclictest0-21swapper/111:50:191
2107645994538,5cyclictest0-21swapper/008:15:120
2107645994531,11cyclictest0-21swapper/007:25:010
2107645994523,19cyclictest20650irq/252-8000000.ethernet08:55:290
210764999441,8cyclictest2139873-21/usr/sbin/munin10:15:092
2107648994428,7cyclictest2120772-21grep08:20:291
210764599442,39cyclictest0-21swapper/008:40:240
210764599442,39cyclictest0-21swapper/008:40:240
2107645994423,19cyclictest20650irq/252-8000000.ethernet09:05:000
2107645994422,19cyclictest20650irq/252-8000000.ethernet11:10:240
2107645994422,19cyclictest20650irq/252-8000000.ethernet11:10:240
2107645994418,22cyclictest2140997-21irqstats10:20:220
2107645994418,22cyclictest2140997-21irqstats10:20:220
210764599441,41cyclictest0-21swapper/011:50:200
2107645994330,9cyclictest0-21swapper/010:45:280
2107645994330,9cyclictest0-21swapper/007:55:280
2107645994330,9cyclictest0-21swapper/007:55:270
210764599432,5cyclictest2124715-21memory08:45:250
210764599432,5cyclictest0-21swapper/008:25:010
2107645994322,19cyclictest20650irq/252-8000000.ethernet07:15:180
2107645994321,20cyclictest20650irq/252-8000000.ethernet12:25:140
2107645994319,21cyclictest2151178-21lsblk11:20:180
2107645994318,22cyclictest2139883-21cpu10:15:140
2107648994236,4cyclictest231ktimers/111:35:011
2107648994228,9cyclictest0-21swapper/107:40:011
2107645994238,2cyclictest0-21swapper/009:50:150
2107645994221,19cyclictest20650irq/252-8000000.ethernet08:05:120
2107645994219,21cyclictest0-21swapper/009:35:270
2107645994218,22cyclictest0-21swapper/010:30:000
210764599421,5cyclictest2155338-21df_inode11:45:160
210764599421,2cyclictest0-21swapper/012:15:020
2107648994128,6cyclictest0-21swapper/112:10:271
2107648994127,6cyclictest0-21swapper/112:25:221
2107645994132,6cyclictest2142479-21dropbear10:30:140
2107645994120,19cyclictest0-21swapper/009:15:270
2107645994118,21cyclictest0-21swapper/007:25:220
2107645994115,24cyclictest15-21rcuc/007:35:110
2107648994032,5cyclictest0-21swapper/111:40:001
2107645994033,5cyclictest0-21swapper/007:30:290
2107645994018,20cyclictest0-21swapper/007:45:200
2107645994017,18cyclictest0-21swapper/009:50:010
210764899395,12cyclictest2108579-21diskstats07:15:011
210764899395,12cyclictest2108579-21diskstats07:15:011
2107648993932,4cyclictest167450irq/126-8000000.ethernet-tx112:05:261
2107648993929,6cyclictest0-21swapper/111:20:271
2107648993928,8cyclictest2160973-21munin-plugin-st12:20:001
2107648993927,6cyclictest0-21swapper/112:00:181
2107648993923,8cyclictest2137057-21sendmail10:00:011
2107648993921,12cyclictest0-21swapper/108:05:191
2107648993920,10cyclictest0-21swapper/109:45:251
2107645993918,19cyclictest0-21swapper/007:10:010
2107645993917,19cyclictest2153766-21ssh11:35:200
210764999382,5cyclictest2107685-21latency_hist07:10:012
2107648993829,4cyclictest0-21swapper/107:55:291
2107648993829,4cyclictest0-21swapper/107:55:291
2107648993827,8cyclictest2136143-21unixbench_singl09:50:281
2107648993825,4cyclictest0-21swapper/111:05:191
2107645993818,18cyclictest0-21swapper/011:40:270
2107645993817,19cyclictest2146896-21/usr/sbin/munin10:55:250
2107645993816,20cyclictest0-21swapper/011:00:210
2107648993727,5cyclictest0-21swapper/110:25:291
2107648993725,6cyclictest0-21swapper/112:30:271
2107648993724,9cyclictest0-21swapper/109:05:221
2107648993723,9cyclictest1653-21lldpd10:05:221
2107648993626,5cyclictest0-21swapper/108:55:281
2107648993625,7cyclictest0-21swapper/112:35:261
2107648993625,7cyclictest0-21swapper/112:35:251
2107648993623,5cyclictest0-21swapper/108:10:291
210764899361,30cyclictest2145972-21sshd10:50:201
2107645993630,4cyclictest20850irq/208-8000000.ethernet09:10:200
210764899353,5cyclictest0-21swapper/110:40:241
2107648993526,4cyclictest0-21swapper/109:20:271
2107648993525,7cyclictest0-21swapper/107:30:181
2107648993523,5cyclictest0-21swapper/107:50:291
210764899351,26cyclictest0-21swapper/111:25:251
2107648993422,7cyclictest0-21swapper/110:25:001
2107648993422,7cyclictest0-21swapper/110:25:001
2107648993420,9cyclictest0-21swapper/110:05:011
210764899341,27cyclictest0-21swapper/108:50:271
210764899341,11cyclictest0-21swapper/110:35:011
2107648993327,4cyclictest0-21swapper/111:10:261
2107648993327,4cyclictest0-21swapper/111:10:261
2107648993317,12cyclictest0-21swapper/108:40:271
2107648993317,12cyclictest0-21swapper/108:40:271
210764899331,27cyclictest0-21swapper/109:10:271
210764899331,26cyclictest0-21swapper/109:15:271
210764899331,26cyclictest0-21swapper/108:35:241
210764899331,25cyclictest0-21swapper/110:45:181
2107648993223,5cyclictest0-21swapper/107:40:201
2107648993221,6cyclictest0-21swapper/107:45:191
2107648993220,7cyclictest0-21swapper/109:35:211
2107648993218,7cyclictest0-21swapper/107:25:011
210764899321,4cyclictest2110935-21meminfo07:25:241
210764899321,25cyclictest0-21swapper/108:45:131
210764899313,24cyclictest231ktimers/109:35:011
2107648993118,8cyclictest0-21swapper/109:05:011
2107648993023,4cyclictest0-21swapper/107:10:001
2107648993017,7cyclictest2147190-21awk10:55:291
210764899301,26cyclictest2117256-21sshd08:02:131
2107648992919,4cyclictest0-21swapper/109:30:011
2107648992818,7cyclictest0-21swapper/107:15:261
2107648992613,8cyclictest0-21swapper/111:40:271
2107648992516,5cyclictest231ktimers/112:20:251
2107648992514,7cyclictest0-21swapper/109:40:261
2107648992513,7cyclictest0-21swapper/111:15:291
2107648992513,7cyclictest0-21swapper/111:15:281
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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