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PRISM v5.21.0 [9661e39] [sched=eevdf+pandemonium]
captured: 20260908-015652
SCHEDULER STABILITY
no ejection -- scheduler ran clean
CLEAN-ROOM
state CLEAN -- load 0.5/32cpu, uptime 0.0h
SYSTEM
cpu AMD Ryzen 9 5950X 16-Core Processor (16c/32t)
memory 31,2 GiB
gpu amdgpu (1002:747E)
kernel 7.2.3-1-cachyos
scheduler pandemonium
STALL SUSCEPTIBILITY
kernel 7.2.3-1-cachyos
tick HZ=1000 NO_HZ_FULL preempt=PREEMPT_DYNAMIC
cpus 32 governor=performance deepest-idle=C2 (3 states)
cmdline nohz_full=- isolcpus=-
verdict score 4 -> MODERATE
factors HZ=1000 (tight ticks -- narrows window); idle CPUs go tickless (NO_HZ_IDLE behavior; NO_HZ_FULL built but no nohz_full= mask, so unused); 32 CPUs (many idle at once)
COMPARISON (p99 wake2run, lower is better)
fork-thread EEVDF n/a -> BPF 3083us, ADAPTIVE 3337us
ipc EEVDF n/a -> BPF 325us, ADAPTIVE 781us
pcpu-burst EEVDF n/a -> PANDEMONIUM 16380us
sojourn-pressure EEVDF n/a -> PANDEMONIUM 1914us
cachyos EEVDF n/a -> BPF 62us, ADAPTIVE 59us
POPULATION (montauk cross-run statistics over 1 run(s), per workload)
cachyos-primes pandemonium-adaptive vs pandemonium-bpf: N=1 cliff +1.00 perm p=1.000 power n>20
cachyos-stress-ng-cpu-cache-mem pandemonium-adaptive vs pandemonium-bpf: N=1 cliff +1.00 perm p=1.000 power n>20
cachyos-xz-compression pandemonium-adaptive vs pandemonium-bpf: N=1 cliff -1.00 perm p=1.000 power n>20
fork-thread pandemonium-adaptive vs pandemonium-bpf: N=1 cliff +1.00 perm p=1.000 power n>20
ipc-32c pandemonium-adaptive vs pandemonium-bpf: N=1 cliff +1.00 perm p=1.000 power n>20
cachyos-primes MCB best (lower p99): pandemonium-bpf
cachyos-stress-ng-cpu-cache-mem MCB best (lower p99): pandemonium-bpf
cachyos-xz-compression MCB best (lower p99): pandemonium-adaptive
fork-thread MCB best (lower p99): pandemonium-bpf
ipc-32c MCB best (lower p99): pandemonium-bpf
N<3 per arm -- montauk reports the effect size but the inference is underpowered; repeat runs accumulate here
STORM (cpu_release flood, powersave -- lower storm% is better)
REAL IPI storm (preempt-kick dominant); storm 61/66 intervals (92.4%); reenq/s p50=259893 peak=267672; kick/s=457110 (preempt 216293) reenq/s=244307
WORKLOAD cachyos-PANDEMONIUM-ADAPTIVE-primes
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
hot-cpu 31 l2_miss_share 41.4921 HIGH
long-range-dependent migration-rate hurst 0.603929 MED
migration-avalanche migration-rate runs 21 MED
CAPTURE complete -- 16500 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 7.2k wake2run; p50 5us p99 430us p999 608us worst 1590us; 83.4% fast(<100us) / 16.5% mid / 0.1% tick-floor(>=900us); 4.9% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~6492 distinct values; inversion ratio 0.63
WORKLOAD cachyos-PANDEMONIUM-ADAPTIVE-stress-ng-cpu-cache-mem
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
long-range-dependent dispatch-rate hurst 0.85286 MED
migration-avalanche migration-rate runs 478 MED
discord 10785ms profile_vs_mean 1.65879 MED
long-range-dependent migration-rate hurst 0.83786 MED
hot-cpu 2 l2_miss_share 3.38837 LOW
CAPTURE complete -- 206335 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 183k wake2run; p50 5us p99 585us p999 973us worst 2002us; 90.5% fast(<100us) / 9.3% mid / 0.2% tick-floor(>=900us); 2.9% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~174227 distinct values; inversion ratio 0.46
WORKLOAD cachyos-PANDEMONIUM-ADAPTIVE-xz-compression
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
hot-waker 6228 wakes_issued 30 HIGH
long-range-dependent dispatch-rate hurst 0.707208 MED
migration-avalanche migration-rate runs 390 MED
discord 480ms profile_vs_mean 1.58556 MED
long-range-dependent migration-rate hurst 0.667413 MED
ioctl-slow 6228/xz duration_ms 0.00051 LOW
hot-cpu 21 l2_miss_share 4.07229 LOW
ioctl-slow 6228/xz duration_ms 0.00037 LOW
CAPTURE complete -- 69809 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 7.3k wake2run; p50 7us p99 59us p999 1590us worst 1863us; 99.2% fast(<100us) / 0.2% mid / 0.5% tick-floor(>=900us); 32.5% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~6989 distinct values; inversion ratio 0.47
WORKLOAD cachyos-PANDEMONIUM-BPF-primes
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
hot-cpu 31 l2_miss_share 45.3609 HIGH
long-range-dependent migration-rate hurst 0.588435 MED
migration-avalanche migration-rate runs 5 MED
discord 234ms profile_vs_mean 1.64857 MED
CAPTURE complete -- 16394 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 7.1k wake2run; p50 5us p99 362us p999 999us worst 1062us; 81.4% fast(<100us) / 18.3% mid / 0.3% tick-floor(>=900us); 2.1% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~6631 distinct values; inversion ratio 0.59
WORKLOAD cachyos-PANDEMONIUM-BPF-stress-ng-cpu-cache-mem
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
long-range-dependent dispatch-rate hurst 0.994394 MED
migration-avalanche migration-rate runs 148 MED
discord 11514ms profile_vs_mean 1.81315 MED
long-range-dependent migration-rate hurst 0.933397 MED
hot-cpu 2 l2_miss_share 3.507 LOW
CAPTURE complete -- 206192 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 182k wake2run; p50 5us p99 359us p999 1000us worst 2989us; 87.2% fast(<100us) / 12.5% mid / 0.3% tick-floor(>=900us); 2.0% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~170649 distinct values; inversion ratio 0.36
WORKLOAD cachyos-PANDEMONIUM-BPF-xz-compression
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
long-range-dependent dispatch-rate hurst 0.68774 MED
migration-avalanche migration-rate runs 37 MED
discord 2798ms profile_vs_mean 1.61758 MED
long-range-dependent migration-rate hurst 0.622347 MED
ioctl-slow 5950/xz duration_ms 0.00059 LOW
hot-cpu 21 l2_miss_share 4.0783 LOW
ioctl-slow 5950/xz duration_ms 0.00045 LOW
CAPTURE complete -- 68983 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 6.4k wake2run; p50 6us p99 62us p999 864us worst 1451us; 99.1% fast(<100us) / 0.8% mid / 0.1% tick-floor(>=900us); 10.6% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~6292 distinct values; inversion ratio 0.50
WORKLOAD cold-wake-32c-PANDEMONIUM
THERMAL/POWER
cpu temp peak 57.5 C avg 53.1 C
power avg 85.1 W peak 113.6 W
idle C2 avg 95.9% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
hot-cpu 25 l2_miss_share 32.5336 HIGH
CAPTURE complete -- 1242 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 42 wake2run; p50 4us p99 1761us p999 1761us worst 1761us; 97.6% fast(<100us) / 0.0% mid / 2.4% tick-floor(>=900us); 0.0% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~39 distinct values; inversion ratio 0.50
COLD-WAKE: cold-cache worst 3.0x at 256KB (0.30ms cold); CPU freq ramp worst +36%
WORKLOAD cold-wake-starve-32c-PANDEMONIUM
THERMAL/POWER
cpu temp peak 58.6 C avg 52.3 C
power avg 86.3 W peak 114.0 W
idle C2 avg 96.3% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
discord 49478ms profile_vs_mean 4.29155 HIGH
hot-cpu 31 l2_miss_share 54.3913 HIGH
mid-trace-death comm#e3e5febe/30630 before_end_s 35.0255 MED
long-range-dependent dispatch-rate hurst 0.919884 MED
mid-trace-death comm#e3e5febe/30659 before_end_s 28.0045 MED
mid-trace-death comm#e3e5febe/30748 before_end_s 7.00095 MED
CAPTURE complete -- 215032 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 97.3k wake2run; p50 2us p99 6us p999 8us worst 274us; 100.0% fast(<100us) / 0.0% mid / 0.0% tick-floor(>=900us); 0.0% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~63842 distinct values; inversion ratio 0.68
WORKLOAD fork-thread-PANDEMONIUM-ADAPTIVE
THERMAL/POWER
cpu temp peak 66.5 C avg 56.5 C
power avg 91.9 W peak 179.2 W
idle C2 avg 88.2% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
order-starved tid=11865 passover_picks 617 HIGH
held-cpu tid=11238 held_ms 2.79014 HIGH
self-preempt tid=2021 stint_wake_ratio 8403 HIGH
self-preempt tid=1100 stint_wake_ratio 8387 HIGH
self-preempt tid=1242 stint_wake_ratio 8385 HIGH
self-preempt tid=2012 stint_wake_ratio 8372 HIGH
order-starved tid=11857 passover_picks 615 HIGH
held-cpu tid=11351 held_ms 2.44157 HIGH
self-preempt tid=2020 stint_wake_ratio 8349 HIGH
self-preempt tid=1947 stint_wake_ratio 8312 HIGH
self-preempt tid=1945 stint_wake_ratio 8135 HIGH
order-starved tid=11420 passover_picks 541 HIGH
held-cpu tid=11201 held_ms 1.47442 HIGH
self-preempt tid=2011 stint_wake_ratio 8104 HIGH
hot-waker 11112 wakes_issued 6968 MED
long-range-dependent dispatch-rate hurst 0.890153 MED
migration-avalanche migration-rate runs 1005 MED
discord 0ms profile_vs_mean 1.58267 MED
hot-waker 11310 wakes_issued 6936 MED
hot-waker 11321 wakes_issued 6012 MED
long-range-dependent migration-rate hurst 0.817983 MED
hot-cpu 15 l2_miss_share 3.77567 LOW
CAPTURE complete -- 3112168 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 371k wake2run; p50 82us p99 3337us p999 8168us worst 29042us; 54.5% fast(<100us) / 37.2% mid / 8.3% tick-floor(>=900us); 2.5% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~365162 distinct values; inversion ratio 0.49
LOCATED: 1 structured region(s) NEARLY_SORTED[0%..0%]
REPORT dispatch-stall
VERDICT: 30.9k saturated wakes over the 900us floor; PREEMPT-STARVED 0% (0 intervening picks) / ORDER-STARVED 100% (CPU served others first); avg 48.3 pass-overs, p99 195 pass-overs
WORKLOAD fork-thread-PANDEMONIUM-BPF
THERMAL/POWER
cpu temp peak 66.1 C avg 55.8 C
power avg 107.2 W peak 191.5 W
idle C2 avg 74.6% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
order-starved tid=9582 passover_picks 569 HIGH
held-cpu tid=9556 held_ms 1.9036 HIGH
self-preempt tid=1226 stint_wake_ratio 8660 HIGH
self-preempt tid=1947 stint_wake_ratio 8599 HIGH
self-preempt tid=2019 stint_wake_ratio 8583 HIGH
self-preempt tid=9510 stint_wake_ratio 8547 HIGH
order-starved tid=9535 passover_picks 568 HIGH
held-cpu tid=9551 held_ms 1.84345 HIGH
self-preempt tid=1099 stint_wake_ratio 8547 HIGH
self-preempt tid=2011 stint_wake_ratio 8534 HIGH
self-preempt tid=2020 stint_wake_ratio 8159 HIGH
order-starved tid=9747 passover_picks 559 HIGH
held-cpu tid=9637 held_ms 1.84342 HIGH
self-preempt tid=1242 stint_wake_ratio 8154 HIGH
hot-waker 9716 wakes_issued 7040 MED
long-range-dependent dispatch-rate hurst 0.897517 MED
migration-avalanche migration-rate runs 775 MED
discord 3175ms profile_vs_mean 2.02474 MED
hot-cpu 31 l2_miss_share 5.55395 MED
hot-waker 9677 wakes_issued 6732 MED
hot-waker 9751 wakes_issued 6364 MED
long-range-dependent migration-rate hurst 0.839558 MED
CAPTURE complete -- 3288543 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 393k wake2run; p50 85us p99 3083us p999 7149us worst 21685us; 54.1% fast(<100us) / 38.4% mid / 7.5% tick-floor(>=900us); 1.9% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~387261 distinct values; inversion ratio 0.47
REPORT dispatch-stall
VERDICT: 29.4k saturated wakes over the 900us floor; PREEMPT-STARVED 0% (0 intervening picks) / ORDER-STARVED 100% (CPU served others first); avg 48.2 pass-overs, p99 177 pass-overs
WORKLOAD ipc-PANDEMONIUM-ADAPTIVE-32c
THERMAL/POWER
cpu temp peak 66.2 C avg 59.4 C
power avg 137.3 W peak 171.2 W
idle C2 avg 34.1% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
order-starved comm#8a5f93b2 passover_picks 118 HIGH
held-cpu comm#8a5f93b2 held_ms 3.92371 HIGH
self-preempt tid=25069 stint_wake_ratio 36134 HIGH
hot-cpu 30 l2_miss_share 11.1999 HIGH
self-preempt tid=25028 stint_wake_ratio 32973 HIGH
self-preempt tid=25060 stint_wake_ratio 28995 HIGH
self-preempt tid=25032 stint_wake_ratio 28196 HIGH
order-starved comm#8a5f93b2 passover_picks 76 HIGH
held-cpu comm#8a5f93b2 held_ms 2.84298 HIGH
self-preempt tid=25057 stint_wake_ratio 27454 HIGH
self-preempt tid=25041 stint_wake_ratio 20911 HIGH
self-preempt tid=25067 stint_wake_ratio 20091 HIGH
order-starved comm#8a5f93b2 passover_picks 62 HIGH
held-cpu comm#c233d180 held_ms 1.81505 HIGH
self-preempt tid=25027 stint_wake_ratio 18344 HIGH
long-range-dependent dispatch-rate hurst 0.830189 MED
migration-avalanche migration-rate runs 101 MED
discord 1102ms profile_vs_mean 2.13639 MED
long-range-dependent migration-rate hurst 0.678971 MED
recvfrom-slow 25101/pand-ipc duration_ms 2.79337 LOW
recvfrom-slow 25101/pand-ipc duration_ms 2.79313 LOW
recvfrom-slow 25101/pand-ipc duration_ms 1.99476 LOW
recvfrom-slow 25103/pand-ipc duration_ms 1.99291 LOW
recvfrom-slow 25103/pand-ipc duration_ms 1.99134 LOW
ioctl-slow 25125/python3 duration_ms 0.00114 LOW
ioctl-slow 25125/python3 duration_ms 0.00063 LOW
ioctl-slow 25125/python3 duration_ms 0.00057 LOW
ioctl-slow 25125/python3 duration_ms 0.00057 LOW
ioctl-slow 25125/python3 duration_ms 0.00053 LOW
CAPTURE complete -- 2613395 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 326k wake2run; p50 4us p99 781us p999 973us worst 2858us; 98.0% fast(<100us) / 1.8% mid / 0.2% tick-floor(>=900us); 0.4% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~275102 distinct values; inversion ratio 0.51
LOCATED: 1 structured region(s) NEARLY_SORTED[93%..94%]
REPORT dispatch-stall
VERDICT: 515 saturated wakes over the 900us floor; PREEMPT-STARVED 2% (0 intervening picks) / ORDER-STARVED 98% (CPU served others first); avg 3.7 pass-overs, p99 43 pass-overs
WORKLOAD ipc-PANDEMONIUM-BPF-32c
THERMAL/POWER
cpu temp peak 67.2 C avg 55.5 C
power avg 118.5 W peak 171.1 W
idle C2 avg 58.8% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
order-starved comm#8a5f93b2 passover_picks 66 HIGH
held-cpu comm#c233d180 held_ms 8.2743 HIGH
self-preempt tid=24375 stint_wake_ratio 48857 HIGH
hot-cpu 11 l2_miss_share 11.7124 HIGH
self-preempt tid=24366 stint_wake_ratio 39042 HIGH
self-preempt tid=24365 stint_wake_ratio 37650 HIGH
self-preempt tid=24372 stint_wake_ratio 35080 HIGH
order-starved comm#8a5f93b2 passover_picks 35 HIGH
held-cpu comm#c233d180 held_ms 3.77548 HIGH
self-preempt tid=24364 stint_wake_ratio 26646 HIGH
self-preempt tid=24368 stint_wake_ratio 26522 HIGH
self-preempt tid=24394 stint_wake_ratio 18937 HIGH
order-starved comm#8a5f93b2 passover_picks 26 HIGH
held-cpu comm#8a5f93b2 held_ms 1.97645 HIGH
self-preempt tid=24371 stint_wake_ratio 18340 HIGH
hot-waker 24470 wakes_issued 159869 MED
long-range-dependent dispatch-rate hurst 0.889989 MED
migration-avalanche migration-rate runs 173 MED
discord 554ms profile_vs_mean 1.85974 MED
long-range-dependent migration-rate hurst 0.676076 MED
recvfrom-slow 24443/pand-ipc duration_ms 1.99503 LOW
recvfrom-slow 24443/pand-ipc duration_ms 1.99104 LOW
recvfrom-slow 24443/pand-ipc duration_ms 1.98933 LOW
recvfrom-slow 24441/pand-ipc duration_ms 1.98901 LOW
recvfrom-slow 24441/pand-ipc duration_ms 1.98853 LOW
ioctl-slow 24463/python3 duration_ms 0.0013 LOW
ioctl-slow 24463/python3 duration_ms 0.00066 LOW
ioctl-slow 24463/python3 duration_ms 0.00058 LOW
ioctl-slow 24463/python3 duration_ms 0.00054 LOW
ioctl-slow 24463/python3 duration_ms 0.00046 LOW
CAPTURE complete -- 2664587 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 338k wake2run; p50 4us p99 325us p999 863us worst 1895us; 98.3% fast(<100us) / 1.7% mid / 0.1% tick-floor(>=900us); 0.7% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~285122 distinct values; inversion ratio 0.37
REPORT dispatch-stall
VERDICT: 261 saturated wakes over the 900us floor; PREEMPT-STARVED 8% (0 intervening picks) / ORDER-STARVED 92% (CPU served others first); avg 4.7 pass-overs, p99 39 pass-overs
WORKLOAD pcpu-burst-32c-PANDEMONIUM
THERMAL/POWER
cpu temp peak 71.5 C avg 66.3 C
power avg 155.9 W peak 197.0 W
idle C2 avg 33.9% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
order-starved comm#328ab0c6 passover_picks 10921 HIGH
doublefree-logic 25815/0x000055c6865fdb50 bytes 24 HIGH
self-preempt tid=1100 stint_wake_ratio 18374 HIGH
doublefree-logic 25814/0x0000562e9cebbb50 bytes 24 HIGH
doublefree-logic 25813/0x0000555cea6b9b50 bytes 24 HIGH
doublefree-logic 25812/0x0000558f93c62b50 bytes 24 HIGH
doublefree-logic 25811/0x0000558b05a4fb50 bytes 24 HIGH
self-preempt tid=1946 stint_wake_ratio 18251 HIGH
doublefree-logic 25810/0x0000561f878a7b50 bytes 24 HIGH
doublefree-logic 25809/0x000055c726f2cb50 bytes 24 HIGH
doublefree-logic 25808/0x0000561dfecc3b50 bytes 24 HIGH
doublefree-logic 25807/0x000055a7123c7b50 bytes 24 HIGH
self-preempt tid=1099 stint_wake_ratio 18207 HIGH
doublefree-logic 25806/0x000055b303752b50 bytes 24 HIGH
doublefree-logic 25804/0x0000564812b50b50 bytes 24 HIGH
doublefree-logic 25803/0x000056151a214b50 bytes 24 HIGH
doublefree-logic 25802/0x000055a2215edb50 bytes 24 HIGH
doublefree-logic 25800/0x0000556a759c0b50 bytes 24 HIGH
self-preempt tid=1242 stint_wake_ratio 18197 HIGH
doublefree-logic 25799/0x00005616e4fc1b50 bytes 24 HIGH
doublefree-logic 25797/0x0000557331305b50 bytes 24 HIGH
order-starved comm#328ab0c6 passover_picks 10654 HIGH
doublefree-logic 25794/0x00005584702fbb50 bytes 24 HIGH
doublefree-logic 25793/0x000055e5d4aafb50 bytes 24 HIGH
self-preempt tid=1944 stint_wake_ratio 18097 HIGH
doublefree-logic 25791/0x0000564bbeccdb50 bytes 24 HIGH
doublefree-logic 25790/0x000056416fc19b50 bytes 24 HIGH
doublefree-logic 25789/0x000055930bd23b50 bytes 24 HIGH
doublefree-logic 25785/0x000055bdd18c4b50 bytes 24 HIGH
doublefree-logic 25783/0x000055866e342b50 bytes 24 HIGH
self-preempt tid=1945 stint_wake_ratio 17711 HIGH
doublefree-logic 25782/0x000056463282eb50 bytes 24 HIGH
doublefree-logic 25780/0x000055a490fbeb50 bytes 24 HIGH
doublefree-logic 25775/0x0000556822601b50 bytes 24 HIGH
doublefree-logic 25773/0x0000561f9a3e4b50 bytes 24 HIGH
self-preempt tid=2021 stint_wake_ratio 17649 HIGH
doublefree-logic 25771/0x000056357f304b50 bytes 24 HIGH
doublefree-logic 25769/0x0000560140b3bb50 bytes 24 HIGH
doublefree-logic 25767/0x000056325a454b50 bytes 24 HIGH
doublefree-logic 25765/0x00005644380ddb50 bytes 24 HIGH
order-starved comm#328ab0c6 passover_picks 10527 HIGH
doublefree-logic 25764/0x000055ae15e54b50 bytes 24 HIGH
self-preempt tid=2011 stint_wake_ratio 16253 HIGH
long-range-dependent dispatch-rate hurst 0.895333 MED
discord 13145ms profile_vs_mean 1.78052 MED
poll-slow 25752/pandemonium duration_ms 0.00177 LOW
hot-cpu 29 l2_miss_share 3.65998 LOW
poll-slow 25760/pandemonium duration_ms 0.00136 LOW
poll-slow 25761/pandemonium duration_ms 0.00134 LOW
poll-slow 25805/pandemonium duration_ms 0.00127 LOW
poll-slow 25757/pandemonium duration_ms 0.00126 LOW
CAPTURE complete -- 1328116 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 96.7k wake2run; p50 1991us p99 16380us p999 21929us worst 25921us; 26.4% fast(<100us) / 7.3% mid / 66.3% tick-floor(>=900us); 0.0% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~96687 distinct values; inversion ratio 0.36
LOCATED: 2 structured region(s) NEARLY_SORTED[21%..21%], NEARLY_SORTED[45%..46%]
REPORT dispatch-stall
VERDICT: 64.1k saturated wakes over the 900us floor; PREEMPT-STARVED 0% (0 intervening picks) / ORDER-STARVED 100% (CPU served others first); avg 10.5 pass-overs, p99 47 pass-overs
WORKLOAD sojourn-pressure-32c-PANDEMONIUM
THERMAL/POWER
cpu temp peak 69.8 C avg 60.5 C
power avg 132.3 W peak 192.1 W
idle C2 avg 54.7% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
order-starved comm#328ab0c6 passover_picks 25 HIGH
held-cpu comm#8a5f93b2 held_ms 3.71845 HIGH
self-preempt tid=1947 stint_wake_ratio 12511 HIGH
self-preempt tid=2012 stint_wake_ratio 12414 HIGH
self-preempt tid=1945 stint_wake_ratio 12373 HIGH
self-preempt tid=2019 stint_wake_ratio 12362 HIGH
order-starved comm#8a5f93b2 passover_picks 18 HIGH
held-cpu comm#8a5f93b2 held_ms 2.85263 HIGH
self-preempt tid=1100 stint_wake_ratio 12311 HIGH
self-preempt tid=1944 stint_wake_ratio 11707 HIGH
self-preempt tid=2021 stint_wake_ratio 11200 HIGH
order-starved comm#8a5f93b2 passover_picks 17 HIGH
held-cpu comm#8a5f93b2 held_ms 2.78057 HIGH
self-preempt tid=2022 stint_wake_ratio 11181 HIGH
discord 8135ms profile_vs_mean 1.59771 MED
hot-cpu 31 l2_miss_share 4.37369 LOW
CAPTURE complete -- 760831 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 3.4k wake2run; p50 9us p99 1914us p999 2792us worst 2922us; 58.2% fast(<100us) / 19.8% mid / 22.0% tick-floor(>=900us); 0.1% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~3281 distinct values; inversion ratio 0.55
REPORT dispatch-stall
VERDICT: 746 saturated wakes over the 900us floor; PREEMPT-STARVED 9% (0 intervening picks) / ORDER-STARVED 91% (CPU served others first); avg 1.3 pass-overs, p99 8 pass-overs
