util/schedulerlatency: max latency capped at 100ms

[jbowens]

cockroach/pkg/util/schedulerlatency/sampler.go

Line 95 in c14a15d

(100 * time.Millisecond).Seconds(), // max

The max histogram bucket in the goroutine scheduler latency is ~100ms. This has led to confusion a few times.

https://cockroachlabs.slack.com/archives/C063CP41TG9/p1707946050906159

Jira issue: CRDB-40543

[blathers-crl]

Hi @jbowens, please add branch-* labels to identify which branch(es) this C-bug affects.

_{🦉 Hoot! I am a Blathers, a bot for CockroachDB. My owner is dev-inf.}

[Kneary95]

Thank you!