From nobody Mon Jan 23 20:25:40 2023 X-Original-To: acpi@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4P11nc2pPkz3bJvp for ; Mon, 23 Jan 2023 20:25:40 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4P11nc1mMmz4MpK for ; Mon, 23 Jan 2023 20:25:40 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1674505540; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Dz2+n2UJ6NikFiE1tScgKBYge7cvPMkIleIpv+U09HY=; b=kcdA6zOvgsDcWNYpT+SJWVHj0UUm3fs+FRs32J92NPTdkaaBz/F4X7blkba5UCmRiL0zl3 1eHJqppCcR0PvmXZiO8mGXjw16hFuzBirZ1/vKZ1XPZOs1AMnvQo9oMoxnYVyEIqas3GD4 Du7k54GVSiDMftim5xMvYFfO/8XM3KZ/es3fgxe0gb+TjUU/xfcyazQ3w4ilosEk+kvCbU T4qKjd+gQAG4NfuA6IG1Xfz1DcsyxZ81H73RF+kB/QFkIEod0+7+bhF79avbuXCqmWrleF OnF04rzrgpkJQteEJ0t/y6TXA99BWuOdHxOneauwOZ0oyHyUpPSpTFNFn+2uiQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1674505540; a=rsa-sha256; cv=none; b=MxnIpw6lNDhDn5PGvQr5eheKcK7P2i20yQE7dLQjOk1JJNJcXsv4Z0UqZNAs43CpnVCi8K V0mxbqfgAQBKJIV6uX07C6KGm4/DiezrtTpHTDeHksu08D8pra7R0W7NIKM3rOzp8Bmb7r KyEZq+8kiBzcHl4QVCo/I09D5Nv5jMtd7GmcRjjnfAzq8UFdDYcnLiTwtKe7HfahrUxYm7 KO1jksJn7YZfFeSeDBJrh1mXuuC4r/RuqsCJAFu9WodI6WodYHcmw8ykAvy9fcqjFCLdP+ lRQ2OPkL5TrY/i0vH7WrGd49C2iAe7uwTGT6t842B31S/SaP/ICyl/PRPq5szg== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4P11nc0hZ5zjXY for ; Mon, 23 Jan 2023 20:25:40 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 30NKPehD059420 for ; Mon, 23 Jan 2023 20:25:40 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 30NKPeRZ059419 for acpi@FreeBSD.org; Mon, 23 Jan 2023 20:25:40 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: acpi@FreeBSD.org Subject: [Bug 173541] High (0.60+, 1.00) idle load averages Date: Mon, 23 Jan 2023 20:25:40 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 13.0-RELEASE X-Bugzilla-Keywords: needs-qa, regression X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: marklmi26-fbsd@yahoo.com X-Bugzilla-Status: Closed X-Bugzilla-Resolution: FIXED X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: acpi@FreeBSD.org X-Bugzilla-Flags: maintainer-feedback? maintainer-feedback? mfc-stable13? mfc-stable12? X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: ACPI and power management development List-Archive: https://lists.freebsd.org/archives/freebsd-acpi List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-acpi@freebsd.org MIME-Version: 1.0 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D173541 --- Comment #50 from Mark Millard --- (In reply to Alexander Motin from comment #46) Quoting your #9 : . . . if system is idle, its CPU may wakeup as low as two times per second. But, the load average code is based on fixed 5 second sampling and then a small variability is tolerated/introduced to avoid matching a (nearly) fixed frequency activity accidentally matching. The "fixed" turns into a fixed number of adjustments, such as 12, 60, or 180. Having anything like 30sec between steppings of the load average adjustment, spreads the 12 steps case (60 sec @5 sec each intended) out to something like 360 sec total for the 12 steps. (Also has implications for widely variable time interval sizes.) If that is really the case, not much else can matter as long as the 5 sec interval is not well approximated and calling the average a "1 minute" average can be highly misleading. Descriptions that would be accurate are "12 step load figure", "60 step load figure", and "180 step load figure". No fixed conversion to time intervals available --and not really arithmetic means. Sound right? Note: For what I use the "load averages" for, the "N step load figure" interpretation works fine without knowing specific times. Inaccuracies in small figures (relative to the hardware thread count involved) make no noticeable difference. Nor do small percentage errors in the larger figures: Rule of thumb material for making some judgments that are not highly sensitive to the details. --=20 You are receiving this mail because: You are the assignee for the bug.=