Re: [PATCH 0/4] sched: Various reweight_entity() fixes

[Peter Zijlstra <peterz@infradead.org>]

On Wed, Feb 11, 2026 at 11:48:33AM +0100, Peter Zijlstra wrote:

> Now let me go check on that latency thing from Doug (although hopefully
> that was the same boo-boo).

Only ~3 hours so far, I'll let it run overnight.

So on my ADL with P-cores only (unplug the E things):

$ NR=`grep -c processor /proc/cpuinfo`; for ((i=0; i<$NR; i++)) do yes > /dev/null & done
$ turbostat --quiet --Summary --show Busy%,Bzy_MHz,IRQ,PkgWatt,PkgTmp,TSC_MHz,Time_Of_Day_Seconds,usec --interval 1 --out /dev/shm/turbo.log

$ gawk '/^usec/ {next} { if (T) { d=$2-T; bucket[int(d*1000)]++; } T=$2 } END { for (i in bucket) { printf "%0.3f: %d\n", i/1000, bucket[i] }}' < /dev/shm/turbo.log
1.000: 4943
1.001: 5000
1.002: 21
1.003: 10
1.004: 1
1.005: 1


Which seems to suggest things are looking better again.