You are here: Home / Technical Services / OSADL QA Farm Real-time / 
2026-04-30 - 00:48

OSADL QA Farm on Real-time of Mainline Linux

About - Hardware - CPUs - Benchmarks - Graphics - Benchmarks - Kernels - Boards/Distros - Latency monitoring - Latency plots - System data - Profiles - Compare - Awards

Default latency plot of shadow in rack #4, 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 
Special  All - All RT - Optimization - Ethernet - Thumbnails - Next
  
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: 50 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rack4slot6s.osadl.org (updated Wed Apr 29, 2026 12:44:00)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
920322620,3sleep09205-21uname12:05:240
3117622500,2sleep031179-21cpu09:20:110
513422430,2sleep05137-21latency11:50:160
1685321290,3sleep016855-21idleruntime10:30:150
1078621280,2sleep010788-21grep08:00:240
2521221230,3chrt25210-21users08:55:290
1444321210,4chrt14444-21latency08:15:170
1390021210,4chrt13894-21munin-run12:25:010
1536821180,3chrt15361-21munin-run10:25:010
2130021160,3chrt21296-21timerandwakeup08:40:270
2962821150,4chrt29629-21cat11:20:030
1960921140,4chrt19610-21latency08:35:160
45721070,3sleep0456-21wc07:20:230
1565821030,4sleep015662-21df08:20:110
299722990,5sleep029973-21munin-node07:10:100
288212990,4sleep028863-21/usr/sbin/munin07:05:180
284112980,3sleep028446-21latency_hist09:10:010
29872999560,23cyclictest9194-21wc10:00:170
29872999063,16cyclictest32263-21/usr/sbin/munin11:30:250
29872999046,16cyclictest11883-21ntp_states10:10:220
29872998947,16cyclictest12596-21awk12:20:000
29872998865,13cyclictest15563-21fw_packets10:25:130
29872998860,15cyclictest29426-21runrttasks09:12:420
103172880,2sleep010318-21cut12:10:180
29872998761,15cyclictest18365-21memory08:30:170
29872998761,14cyclictest29918-21/usr/sbin/munin09:15:130
29872998760,15cyclictest5870-21users07:40:290
87482860,2sleep08744-21latency_hist12:05:000
29872998661,16cyclictest7417-21munin-run12:00:010
29872998661,14cyclictest28203-21chrt11:14:410
29872998659,16cyclictest1404-21/usr/sbin/munin07:25:130
29872998658,15cyclictest15894-21/usr/sbin/munin12:30:290
29872998657,18cyclictest14287-21ntpq12:25:210
29872998653,21cyclictest10374-21df_inode10:05:140
29872998653,20cyclictest13161-21ntpq10:15:210
29872998562,13cyclictest23492-21ntp_states10:55:210
29872998560,13cyclictest393-21/usr/sbin/munin09:25:250
29872998559,15cyclictest18339-21ntp_states10:35:210
29872998558,15cyclictest22972-21seq10:54:090
29872998460,14cyclictest1435-21ps11:35:260
29872998459,14cyclictest8044-21/usr/sbin/munin09:55:260
29872998459,13cyclictest3966-21ntp_states11:45:210
29872998360,15cyclictest8657-21runrttasks07:52:130
29872998360,14cyclictest7230-21chrt07:46:010
29872998360,14cyclictest2276-21chrt09:33:490
29872998349,21cyclictest25809-21/usr/sbin/munin11:05:300
29872998259,14cyclictest9191-21/usr/sbin/munin07:55:140
29872998258,14cyclictest20831-21memory10:45:170
29872998255,15cyclictest6611-21/usr/sbin/munin09:50:170
29872998253,17cyclictest3945-21modprobe07:35:010
29872998251,21cyclictest5211-21df_inode09:45:130
29872998251,21cyclictest276-21runrttasks11:40:090
29872998244,25cyclictest27028-21chrt09:04:320
29872998159,13cyclictest30514-21seq11:22:130
29872998156,14cyclictest13984-21seq08:13:330
29872998151,18cyclictest3950-21sort09:40:140
29872998149,18cyclictest30982-21/usr/sbin/munin11:25:150
29872998056,14cyclictest2821-21irqstats07:30:140
29872998056,14cyclictest24523-21grep11:00:090
29872998055,14cyclictest17082-21memory08:25:170
29872998051,16cyclictest22101-21df08:45:110
29872998048,20cyclictest19503-21chrt10:40:170
29872997940,15cyclictest31850-21users07:15:290
29872997856,13cyclictest12320-21users08:05:290
29872997757,12cyclictest2844-21ntp_states09:35:210
29872997750,17cyclictest16803-21missed_timers12:35:190
29872997750,15cyclictest23521-21memory08:50:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

Valid XHTML 1.0 Transitional