Date: Mon, 28 Jul 2025 13:31:38 GMT From: Olivier Certner <olce@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 00c1b4fac2ab - stable/14 - sched_4bsd: Remove RQ_PPQ from ESTCPULIM()'s formula Message-ID: <202507281331.56SDVcLj082115@gitrepo.freebsd.org>
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The branch stable/14 has been updated by olce: URL: https://cgit.FreeBSD.org/src/commit/?id=00c1b4fac2ab709b0e0c77007d47c85e0bf36095 commit 00c1b4fac2ab709b0e0c77007d47c85e0bf36095 Author: Olivier Certner <olce@FreeBSD.org> AuthorDate: 2024-05-21 12:26:25 +0000 Commit: Olivier Certner <olce@FreeBSD.org> CommitDate: 2025-07-28 13:28:42 +0000 sched_4bsd: Remove RQ_PPQ from ESTCPULIM()'s formula Substracting RQ_PPQ to the maximum number of allowed priority values (the factor to INVERSE_ESTCPU_WEIGHT) has the effect of pessimizing the number of processes assigned to the last priority bucket. MFC after: 1 month Event: Kitchener-Waterloo Hackathon 202506 Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D45392 (cherry picked from commit 51a4ae05abe6e170de0ff82641d8fce19043eea9) --- sys/kern/sched_4bsd.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/sys/kern/sched_4bsd.c b/sys/kern/sched_4bsd.c index 4cf5ec054d1c..e9d180fde303 100644 --- a/sys/kern/sched_4bsd.c +++ b/sys/kern/sched_4bsd.c @@ -79,9 +79,9 @@ dtrace_vtime_switch_func_t dtrace_vtime_switch_func; #define INVERSE_ESTCPU_WEIGHT 8 /* 1 / (priorities per estcpu level). */ #endif #define NICE_WEIGHT 1 /* Priorities per nice level. */ -#define ESTCPULIM(e) \ - min((e), INVERSE_ESTCPU_WEIGHT * (NICE_WEIGHT * (PRIO_MAX - PRIO_MIN) - \ - RQ_PPQ) + INVERSE_ESTCPU_WEIGHT - 1) +#define ESTCPULIM(e) \ + min((e), INVERSE_ESTCPU_WEIGHT * (NICE_WEIGHT * (PRIO_MAX - PRIO_MIN)) \ + + INVERSE_ESTCPU_WEIGHT - 1) #define TS_NAME_LEN (MAXCOMLEN + sizeof(" td ") + sizeof(__XSTRING(UINT_MAX)))
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