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PRISM v5.21.0 [unknown-dirty] [sched=eevdf+pandemonium]
captured: 20260911-204709
SCHEDULER STABILITY
no ejection -- scheduler ran clean
CLEAN-ROOM
state NOISY -- load 1.6/16cpu, uptime 2.2h
SYSTEM
cpu AMD Ryzen 9 5950X 16-Core Processor (16c/16t)
memory 31,2 GiB
gpu amdgpu (1002:747E)
kernel 7.2.4-3-cachyos
scheduler pandemonium
STALL SUSCEPTIBILITY
kernel 7.2.4-3-cachyos
tick HZ=1000 NO_HZ_FULL preempt=PREEMPT_DYNAMIC
cpus 16 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); 16 CPUs (many idle at once)
COMPARISON (p99 wake2run, lower is better)
fork-thread EEVDF n/a -> BPF 8484us, ADAPTIVE 8184us
ipc EEVDF n/a -> BPF 6us, ADAPTIVE 6us
pcpu-burst EEVDF n/a -> PANDEMONIUM 18004us
sojourn-pressure EEVDF n/a -> PANDEMONIUM 762us
cachyos EEVDF n/a -> BPF 586us, ADAPTIVE 564us
POPULATION (montauk cross-run statistics over 7 run(s), per workload)
cachyos-primes eevdf vs pandemonium-adaptive: N=2 cliff +1.00 perm p=0.028 power n=3
cachyos-primes eevdf vs pandemonium-bpf: N=2 cliff +1.00 perm p=0.028 power n=3
cachyos-primes pandemonium-adaptive vs pandemonium-bpf: N=7 cliff +0.06 perm p=0.903 power n>20
cachyos-stress-ng-cpu-cache-mem eevdf vs pandemonium-adaptive: N=2 cliff +1.00 perm p=0.028 power n=4
cachyos-stress-ng-cpu-cache-mem eevdf vs pandemonium-bpf: N=2 cliff +1.00 perm p=0.028 power n=3
cachyos-stress-ng-cpu-cache-mem pandemonium-adaptive vs pandemonium-bpf: N=7 cliff +0.47 perm p=0.253 power n>20
cachyos-xz-compression eevdf vs pandemonium-adaptive: N=2 cliff +1.00 perm p=0.028 power n=3
cachyos-xz-compression eevdf vs pandemonium-bpf: N=2 cliff +1.00 perm p=0.028 power n=3
cachyos-xz-compression pandemonium-adaptive vs pandemonium-bpf: N=7 cliff +0.10 perm p=0.725 power n>20
cold-wake-16c eevdf vs pandemonium: N=2 cliff -0.80 perm p=0.238 power n=6
cold-wake-starve-16c eevdf vs pandemonium: N=2 cliff +1.00 perm p=0.048 power n=4
fork-thread eevdf vs pandemonium-adaptive: N=2 cliff +1.00 perm p=0.028 power n=2
fork-thread eevdf vs pandemonium-bpf: N=2 cliff +1.00 perm p=0.028 power n=3
fork-thread pandemonium-adaptive vs pandemonium-bpf: N=7 cliff -0.02 perm p=0.828 power n>20
ipc-16c eevdf vs pandemonium-adaptive: N=2 cliff +0.20 perm p=0.762 power n>20
ipc-16c eevdf vs pandemonium-bpf: N=2 cliff +0.20 perm p=0.905 power n>20
ipc-16c pandemonium-adaptive vs pandemonium-bpf: N=5 cliff +0.04 perm p=0.921 power n>20
ipc-32c pandemonium-adaptive vs pandemonium-bpf: N=2 cliff +1.00 perm p=0.333 power n=3
pcpu-burst-16c eevdf vs pandemonium: N=2 cliff -0.40 perm p=0.333 power n=12
sojourn-pressure-16c eevdf vs pandemonium: N=2 cliff +0.80 perm p=0.095 power n=5
cachyos-primes MCB best (lower p99): pandemonium-adaptive (tied), pandemonium-bpf (tied)
cachyos-stress-ng-cpu-cache-mem MCB best (lower p99): pandemonium-adaptive (tied), pandemonium-bpf (tied)
cachyos-xz-compression MCB best (lower p99): pandemonium-adaptive (tied), pandemonium-bpf (tied)
cold-wake-16c MCB best (lower p99): eevdf
cold-wake-starve-16c MCB best (lower p99): pandemonium
fork-thread MCB best (lower p99): pandemonium-adaptive (tied), pandemonium-bpf (tied)
ipc-16c MCB best (lower p99): eevdf (tied), pandemonium-adaptive (tied), pandemonium-bpf (tied)
ipc-32c MCB best (lower p99): pandemonium-bpf
pcpu-burst-16c MCB best (lower p99): eevdf
sojourn-pressure-16c MCB best (lower p99): pandemonium
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)
clean -- no storm intervals; storm 0/73 intervals (0.0%); reenq/s p50=15094 peak=15600; kick/s=238765 (preempt 127627) reenq/s=14224
WORKLOAD cachyos-PANDEMONIUM-ADAPTIVE-primes
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
hot-cpu 15 l2_miss_share 51.5635 HIGH
long-range-dependent migration-rate hurst 0.626231 MED
migration-avalanche migration-rate runs 20 MED
discord 1026ms profile_vs_mean 1.57673 MED
CAPTURE complete -- 16233 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 11.3k wake2run; p50 4us p99 709us p999 999us worst 1007us; 84.2% fast(<100us) / 15.5% mid / 0.4% tick-floor(>=900us); 2.1% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~9340 distinct values; inversion ratio 0.50
WORKLOAD cachyos-PANDEMONIUM-ADAPTIVE-stress-ng-cpu-cache-mem
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
long-range-dependent migration-rate hurst 0.825488 MED
migration-avalanche migration-rate runs 252 MED
discord 3541ms profile_vs_mean 1.7401 MED
long-range-dependent dispatch-rate hurst 0.794365 MED
hot-cpu 15 l2_miss_share 7.78555 LOW
CAPTURE complete -- 112986 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 103k wake2run; p50 4us p99 652us p999 945us worst 2033us; 87.0% fast(<100us) / 12.8% mid / 0.2% tick-floor(>=900us); 3.2% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~80727 distinct values; inversion ratio 0.52
WORKLOAD cachyos-PANDEMONIUM-ADAPTIVE-xz-compression
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
long-range-dependent dispatch-rate hurst 0.705355 MED
migration-avalanche migration-rate runs 55 MED
discord 1881ms profile_vs_mean 1.72703 MED
long-range-dependent migration-rate hurst 0.659959 MED
ioctl-slow 46178/xz duration_ms 0.00046 LOW
hot-cpu 1 l2_miss_share 6.94194 LOW
ioctl-slow 46178/xz duration_ms 0.00039 LOW
CAPTURE complete -- 84520 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 22.3k wake2run; p50 4us p99 564us p999 761us worst 2629us; 86.9% fast(<100us) / 13.0% mid / 0.0% tick-floor(>=900us); 2.8% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~18830 distinct values; inversion ratio 0.46
WORKLOAD cachyos-PANDEMONIUM-BPF-primes
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
hot-cpu 15 l2_miss_share 46.4918 HIGH
long-range-dependent migration-rate hurst 0.626378 MED
migration-avalanche migration-rate runs 21 MED
CAPTURE complete -- 15850 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 10.9k wake2run; p50 4us p99 694us p999 998us worst 1002us; 87.4% fast(<100us) / 12.4% mid / 0.3% tick-floor(>=900us); 2.7% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~8172 distinct values; inversion ratio 0.51
WORKLOAD cachyos-PANDEMONIUM-BPF-stress-ng-cpu-cache-mem
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
long-range-dependent migration-rate hurst 0.892634 MED
migration-avalanche migration-rate runs 175 MED
discord 2280ms profile_vs_mean 1.78515 MED
long-range-dependent dispatch-rate hurst 0.86162 MED
hot-cpu 15 l2_miss_share 6.91077 LOW
CAPTURE complete -- 113974 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 104k wake2run; p50 4us p99 638us p999 941us worst 1427us; 88.3% fast(<100us) / 11.5% mid / 0.2% tick-floor(>=900us); 4.3% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~82504 distinct values; inversion ratio 0.48
LOCATED: 2 structured region(s) NEARLY_SORTED[12%..12%], NEARLY_SORTED[45%..45%]
WORKLOAD cachyos-PANDEMONIUM-BPF-xz-compression
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
long-range-dependent dispatch-rate hurst 0.717075 MED
migration-avalanche migration-rate runs 49 MED
discord 889ms profile_vs_mean 1.65097 MED
long-range-dependent migration-rate hurst 0.656101 MED
ioctl-slow 45941/xz duration_ms 0.0006 LOW
hot-cpu 10 l2_miss_share 7.62182 LOW
ioctl-slow 45941/xz duration_ms 0.00055 LOW
CAPTURE complete -- 85321 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 22.8k wake2run; p50 4us p99 586us p999 941us worst 1003us; 88.0% fast(<100us) / 11.8% mid / 0.2% tick-floor(>=900us); 3.7% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~17102 distinct values; inversion ratio 0.47
LOCATED: 1 structured region(s) NEARLY_SORTED[0%..2%]
WORKLOAD cold-wake-16c-PANDEMONIUM
THERMAL/POWER
cpu temp peak 53.0 C avg 50.8 C
power avg 71.3 W peak 99.9 W
idle C2 avg 95.9% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
hot-cpu 1 l2_miss_share 85.1659 HIGH
long-range-dependent dispatch-rate hurst 0.57891 MED
CAPTURE complete -- 848 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 71 wake2run; p50 4us p99 205us p999 205us worst 205us; 95.8% fast(<100us) / 4.2% mid / 0.0% tick-floor(>=900us); 0.0% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~64 distinct values; inversion ratio 0.47
COLD-WAKE: cold-cache worst 4.4x at 32KB (0.03ms cold); CPU freq ramp worst +40%
WORKLOAD cold-wake-starve-16c-PANDEMONIUM
THERMAL/POWER
cpu temp peak 61.2 C avg 54.3 C
power avg 87.3 W peak 108.4 W
idle C2 avg 94.0% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
discord 14886ms profile_vs_mean 4.0313 HIGH
hot-cpu 15 l2_miss_share 58.2269 HIGH
mid-trace-death comm#e3e5febe/68628 before_end_s 35.0234 MED
long-range-dependent dispatch-rate hurst 0.921404 MED
mid-trace-death comm#e3e5febe/68657 before_end_s 28.0033 MED
mid-trace-death comm#e3e5febe/68746 before_end_s 7.00092 MED
CAPTURE complete -- 214742 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 97.4k wake2run; p50 2us p99 4us p999 8us worst 250us; 100.0% fast(<100us) / 0.0% mid / 0.0% tick-floor(>=900us); 0.0% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~79160 distinct values; inversion ratio 0.68
LOCATED: 7 structured region(s) FEW_UNIQUE[23%..23%], FEW_UNIQUE[24%..24%], FEW_UNIQUE[25%..26%], FEW_UNIQUE[27%..28%], FEW_UNIQUE[29%..30%] +2 more
WORKLOAD fork-thread-PANDEMONIUM-ADAPTIVE
THERMAL/POWER
cpu temp peak 63.0 C avg 56.8 C
power avg 96.2 W peak 164.7 W
idle C2 avg 85.1% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
order-starved tid=50365 passover_picks 986 HIGH
held-cpu tid=50296 held_ms 4.03363 HIGH
self-preempt tid=2090 stint_wake_ratio 8519 HIGH
self-preempt tid=2089 stint_wake_ratio 8474 HIGH
self-preempt tid=1647 stint_wake_ratio 8463 HIGH
self-preempt tid=1649 stint_wake_ratio 8418 HIGH
order-starved tid=50318 passover_picks 734 HIGH
held-cpu tid=50177 held_ms 3.25103 HIGH
self-preempt tid=1648 stint_wake_ratio 8402 HIGH
self-preempt tid=1820 stint_wake_ratio 8363 HIGH
self-preempt tid=1646 stint_wake_ratio 8352 HIGH
order-starved tid=50310 passover_picks 715 HIGH
held-cpu tid=50259 held_ms 2.85664 HIGH
self-preempt tid=1916 stint_wake_ratio 8308 HIGH
long-range-dependent dispatch-rate hurst 0.809475 MED
migration-avalanche migration-rate runs 957 MED
long-range-dependent migration-rate hurst 0.797986 MED
hot-cpu 9 l2_miss_share 6.66355 LOW
CAPTURE complete -- 1731237 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 189k wake2run; p50 277us p99 8184us p999 11835us worst 27586us; 35.6% fast(<100us) / 35.9% mid / 28.6% tick-floor(>=900us); 4.0% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~189420 distinct values; inversion ratio 0.51
LOCATED: 2 structured region(s) NEARLY_SORTED[5%..6%], NEARLY_SORTED[96%..96%]
REPORT dispatch-stall
VERDICT: 54.1k saturated wakes over the 900us floor; PREEMPT-STARVED 0% (0 intervening picks) / ORDER-STARVED 100% (CPU served others first); avg 45.0 pass-overs, p99 169 pass-overs
WORKLOAD fork-thread-PANDEMONIUM-BPF
THERMAL/POWER
cpu temp peak 62.2 C avg 56.6 C
power avg 97.7 W peak 164.5 W
idle C2 avg 76.7% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
order-starved tid=48929 passover_picks 919 HIGH
held-cpu tid=49107 held_ms 3.55611 HIGH
self-preempt tid=1820 stint_wake_ratio 8408 HIGH
self-preempt tid=2089 stint_wake_ratio 8400 HIGH
self-preempt tid=1648 stint_wake_ratio 8376 HIGH
self-preempt tid=1916 stint_wake_ratio 8365 HIGH
order-starved tid=49817 passover_picks 871 HIGH
held-cpu tid=48991 held_ms 3.35635 HIGH
self-preempt tid=1646 stint_wake_ratio 8364 HIGH
self-preempt tid=1647 stint_wake_ratio 8354 HIGH
self-preempt tid=2090 stint_wake_ratio 8341 HIGH
order-starved tid=49054 passover_picks 794 HIGH
held-cpu tid=49039 held_ms 2.91578 HIGH
self-preempt tid=1649 stint_wake_ratio 8338 HIGH
long-range-dependent dispatch-rate hurst 0.802476 MED
migration-avalanche migration-rate runs 1066 MED
discord 3683ms profile_vs_mean 1.7997 MED
long-range-dependent migration-rate hurst 0.796357 MED
hot-cpu 13 l2_miss_share 6.65015 LOW
CAPTURE complete -- 1622282 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 176k wake2run; p50 289us p99 8484us p999 15404us worst 19788us; 35.3% fast(<100us) / 34.5% mid / 30.1% tick-floor(>=900us); 4.7% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~176089 distinct values; inversion ratio 0.59
LOCATED: 2 structured region(s) NEARLY_SORTED[0%..0%], NEARLY_SORTED[10%..10%]
REPORT dispatch-stall
VERDICT: 53.1k saturated wakes over the 900us floor; PREEMPT-STARVED 0% (0 intervening picks) / ORDER-STARVED 100% (CPU served others first); avg 46.8 pass-overs, p99 183 pass-overs
WORKLOAD ipc-PANDEMONIUM-ADAPTIVE-16c
THERMAL/POWER
cpu temp peak 58.5 C avg 53.6 C
power avg 113.6 W peak 142.3 W
idle C2 avg 43.7% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
order-starved comm#8a5f93b2 passover_picks 23 HIGH
held-cpu comm#c233d180 held_ms 20.2849 HIGH
hot-waker 65147 wakes_issued 79959 HIGH
self-preempt tid=65084 stint_wake_ratio 54172 HIGH
self-preempt tid=65076 stint_wake_ratio 48675 HIGH
self-preempt tid=65082 stint_wake_ratio 30232 HIGH
self-preempt tid=65081 stint_wake_ratio 24835 HIGH
order-starved comm#8a5f93b2 passover_picks 15 HIGH
held-cpu comm#8a5f93b2 held_ms 10.3972 HIGH
self-preempt tid=65090 stint_wake_ratio 24705 HIGH
self-preempt tid=65087 stint_wake_ratio 24244 HIGH
self-preempt tid=65075 stint_wake_ratio 14246 HIGH
order-starved comm#8a5f93b2 passover_picks 12 HIGH
held-cpu comm#c233d180 held_ms 5.02149 HIGH
self-preempt tid=65078 stint_wake_ratio 10112 HIGH
long-range-dependent dispatch-rate hurst 0.919615 MED
discord 4871ms profile_vs_mean 1.8378 MED
hot-cpu 2 l2_miss_share 16.7262 MED
long-range-dependent migration-rate hurst 0.555644 MED
recvfrom-slow 65126/pand-ipc duration_ms 1.19826 LOW
recvfrom-slow 65124/pand-ipc duration_ms 1.19051 LOW
recvfrom-slow 65126/pand-ipc duration_ms 1.08547 LOW
recvfrom-slow 65126/pand-ipc duration_ms 1.08379 LOW
recvfrom-slow 65126/pand-ipc duration_ms 1.07916 LOW
ioctl-slow 65142/python3 duration_ms 0.00084 LOW
ioctl-slow 65142/python3 duration_ms 0.00053 LOW
ioctl-slow 65142/python3 duration_ms 0.00049 LOW
ioctl-slow 65142/python3 duration_ms 0.00046 LOW
ioctl-slow 65142/python3 duration_ms 0.0004 LOW
CAPTURE complete -- 1830343 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 242k wake2run; p50 3us p99 6us p999 633us worst 2201us; 99.8% fast(<100us) / 0.2% mid / 0.1% tick-floor(>=900us); 0.0% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~173806 distinct values; inversion ratio 0.57
LOCATED: 6 structured region(s) FEW_UNIQUE[3%..4%], FEW_UNIQUE[10%..10%], FEW_UNIQUE[40%..40%], FEW_UNIQUE[54%..55%], FEW_UNIQUE[66%..66%] +1 more
REPORT dispatch-stall
VERDICT: 121 saturated wakes over the 900us floor; PREEMPT-STARVED 28% (0 intervening picks) / ORDER-STARVED 72% (CPU served others first); avg 1.4 pass-overs, p99 3 pass-overs
WORKLOAD ipc-PANDEMONIUM-BPF-16c
THERMAL/POWER
cpu temp peak 58.5 C avg 55.7 C
power avg 118.7 W peak 142.2 W
idle C2 avg 34.4% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
order-starved comm#8a5f93b2 passover_picks 18 HIGH
held-cpu comm#c233d180 held_ms 8.58872 HIGH
hot-waker 64842 wakes_issued 79978 HIGH
self-preempt tid=64773 stint_wake_ratio 49610 HIGH
self-preempt tid=64788 stint_wake_ratio 29112 HIGH
self-preempt tid=64785 stint_wake_ratio 29029 HIGH
self-preempt tid=64784 stint_wake_ratio 25230 HIGH
order-starved comm#8a5f93b2 passover_picks 17 HIGH
held-cpu comm#8a5f93b2 held_ms 3.79794 HIGH
self-preempt tid=64778 stint_wake_ratio 24313 HIGH
self-preempt tid=64779 stint_wake_ratio 23990 HIGH
self-preempt tid=64772 stint_wake_ratio 16647 HIGH
order-starved comm#8a5f93b2 passover_picks 10 HIGH
held-cpu comm#c233d180 held_ms 2.84598 HIGH
self-preempt tid=64771 stint_wake_ratio 16071 HIGH
long-range-dependent dispatch-rate hurst 0.933545 MED
discord 8477ms profile_vs_mean 2.02572 MED
hot-cpu 4 l2_miss_share 18.433 MED
long-range-dependent migration-rate hurst 0.579627 MED
recvfrom-slow 64819/pand-ipc duration_ms 2.07983 LOW
recvfrom-slow 64821/pand-ipc duration_ms 2.02207 LOW
recvfrom-slow 64821/pand-ipc duration_ms 2.01756 LOW
recvfrom-slow 64819/pand-ipc duration_ms 2.00892 LOW
recvfrom-slow 64819/pand-ipc duration_ms 2.00776 LOW
ioctl-slow 64837/python3 duration_ms 0.00085 LOW
ioctl-slow 64837/python3 duration_ms 0.00056 LOW
ioctl-slow 64837/python3 duration_ms 0.00047 LOW
ioctl-slow 64837/python3 duration_ms 0.00046 LOW
ioctl-slow 64837/python3 duration_ms 0.00039 LOW
CAPTURE complete -- 1835276 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 242k wake2run; p50 3us p99 6us p999 472us worst 1055us; 99.8% fast(<100us) / 0.1% mid / 0.0% tick-floor(>=900us); 0.0% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~181131 distinct values; inversion ratio 0.48
LOCATED: 6 structured region(s) FEW_UNIQUE[7%..7%], FEW_UNIQUE[13%..13%], FEW_UNIQUE[13%..14%], FEW_UNIQUE[26%..27%], FEW_UNIQUE[30%..30%] +1 more
REPORT dispatch-stall
VERDICT: 100 saturated wakes over the 900us floor; PREEMPT-STARVED 16% (0 intervening picks) / ORDER-STARVED 84% (CPU served others first); avg 1.1 pass-overs, p99 3 pass-overs
WORKLOAD pcpu-burst-16c-PANDEMONIUM
THERMAL/POWER
cpu temp peak 63.0 C avg 60.7 C
power avg 134.5 W peak 161.4 W
idle C2 avg 29.3% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
order-starved comm#328ab0c6 passover_picks 13099 HIGH
doublefree-logic 65409/0x000055f24e9f9b50 bytes 24 HIGH
self-preempt tid=1916 stint_wake_ratio 18610 HIGH
doublefree-logic 65408/0x0000564531780b50 bytes 24 HIGH
doublefree-logic 65407/0x000056545e416b50 bytes 24 HIGH
self-preempt tid=1646 stint_wake_ratio 18541 HIGH
doublefree-logic 65406/0x000055f8b96cdb50 bytes 24 HIGH
doublefree-logic 65405/0x0000562cfcfddb50 bytes 24 HIGH
self-preempt tid=1820 stint_wake_ratio 18515 HIGH
doublefree-logic 65404/0x0000556255dcfb50 bytes 24 HIGH
doublefree-logic 65403/0x000055d3d4a1cb50 bytes 24 HIGH
self-preempt tid=1647 stint_wake_ratio 18489 HIGH
doublefree-logic 65402/0x000055b72a626b50 bytes 24 HIGH
order-starved comm#328ab0c6 passover_picks 13063 HIGH
doublefree-logic 65401/0x0000559a2cd28b50 bytes 24 HIGH
self-preempt tid=2089 stint_wake_ratio 18483 HIGH
doublefree-logic 65400/0x000055c2490bcb50 bytes 24 HIGH
doublefree-logic 65399/0x00005610a4230b50 bytes 24 HIGH
self-preempt tid=2090 stint_wake_ratio 18473 HIGH
doublefree-logic 65398/0x000055e772341b50 bytes 24 HIGH
doublefree-logic 65396/0x00005584053d4b50 bytes 24 HIGH
self-preempt tid=1648 stint_wake_ratio 18424 HIGH
doublefree-logic 65394/0x00005641d5f0ab50 bytes 24 HIGH
doublefree-logic 65392/0x0000563971768b50 bytes 24 HIGH
order-starved comm#328ab0c6 passover_picks 12914 HIGH
doublefree-logic 65390/0x0000562f5c6d3b50 bytes 24 HIGH
self-preempt tid=1649 stint_wake_ratio 18403 HIGH
long-range-dependent dispatch-rate hurst 0.92925 MED
discord 16024ms profile_vs_mean 1.89392 MED
long-range-dependent migration-rate hurst 0.582063 MED
poll-slow 65378/pandemonium duration_ms 0.00187 LOW
hot-cpu 10 l2_miss_share 7.37925 LOW
poll-slow 65383/pandemonium duration_ms 0.00144 LOW
poll-slow 65386/pandemonium duration_ms 0.0013 LOW
poll-slow 65382/pandemonium duration_ms 0.0013 LOW
poll-slow 65379/pandemonium duration_ms 0.00129 LOW
CAPTURE complete -- 627352 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 40.3k wake2run; p50 2123us p99 18004us p999 20198us worst 22999us; 35.5% fast(<100us) / 3.0% mid / 61.5% tick-floor(>=900us); 0.0% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~39050 distinct values; inversion ratio 0.28
LOCATED: 7 structured region(s) NEARLY_SORTED[30%..34%], NEARLY_SORTED[39%..42%], NEARLY_SORTED[48%..51%], NEARLY_SORTED[57%..60%], NEARLY_SORTED[66%..69%] +2 more
REPORT dispatch-stall
VERDICT: 24.8k saturated wakes over the 900us floor; PREEMPT-STARVED 0% (0 intervening picks) / ORDER-STARVED 100% (CPU served others first); avg 14.1 pass-overs, p99 48 pass-overs
WORKLOAD sojourn-pressure-16c-PANDEMONIUM
THERMAL/POWER
cpu temp peak 62.0 C avg 58.6 C
power avg 132.1 W peak 158.2 W
idle C2 avg 37.5% (dominant)
POORLY-BEHAVING ITEMS (ranked)
kind id metric value sev
order-starved comm#328ab0c6 passover_picks 6 HIGH
held-cpu comm#8a5f93b2 held_ms 1.46197 HIGH
self-preempt tid=1820 stint_wake_ratio 13066 HIGH
self-preempt tid=1646 stint_wake_ratio 13056 HIGH
self-preempt tid=2089 stint_wake_ratio 13032 HIGH
self-preempt tid=2090 stint_wake_ratio 13027 HIGH
order-starved comm#8a5f93b2 passover_picks 1 HIGH
held-cpu comm#8a5f93b2 held_ms 1.00141 HIGH
self-preempt tid=1916 stint_wake_ratio 13027 HIGH
self-preempt tid=1648 stint_wake_ratio 13013 HIGH
self-preempt tid=1649 stint_wake_ratio 12994 HIGH
order-starved comm#328ab0c6 passover_picks 1 HIGH
held-cpu comm#8a5f93b2 held_ms 0.935446 HIGH
self-preempt tid=1647 stint_wake_ratio 11874 HIGH
kthread-strand comm#12f62b72 max_strand_ms 12.0013 MED
mean-reverting dispatch-rate hurst 0.308452 MED
discord 219ms profile_vs_mean 1.51246 MED
hot-cpu 6 l2_miss_share 13.9842 MED
CAPTURE complete -- 469028 events, none dropped
KEY METRICS
REPORT sched
VERDICT: 4.4k wake2run; p50 4us p99 762us p999 1064us worst 3000us; 94.4% fast(<100us) / 5.4% mid / 0.2% tick-floor(>=900us); 0.0% cross-domain
STRUCTURE: latency-over-trace RANDOM; ~4005 distinct values; inversion ratio 0.54
REPORT dispatch-stall
VERDICT: 10 saturated wakes over the 900us floor; PREEMPT-STARVED 40% (0 intervening picks) / ORDER-STARVED 60% (CPU served others first); avg 3.7 pass-overs, p99 8 pass-overs
REPORT kstrand
VERDICT: 1 strands across 1 per-CPU kthreads; worst HELD strand 12.0ms (I/O-completion freeze signature)
kthread cpu strands max_ms p99_ms held dark held_by
comm#12f62b72 6 1 12.0 12.0 1 0 comm#eb5926eb 87%
