From nobody Thu Feb 23 12:19:36 2023 X-Original-To: freebsd-hackers@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 4PMsXk1xMTz3tg4R for ; Thu, 23 Feb 2023 12:19:50 +0000 (UTC) (envelope-from nicolasgoldman07@gmail.com) Received: from mail-ed1-x531.google.com (mail-ed1-x531.google.com [IPv6:2a00:1450:4864:20::531]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4PMsXj4XCLz46w2 for ; Thu, 23 Feb 2023 12:19:49 +0000 (UTC) (envelope-from nicolasgoldman07@gmail.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20210112 header.b="BYr/JpZk"; spf=pass (mx1.freebsd.org: domain of nicolasgoldman07@gmail.com designates 2a00:1450:4864:20::531 as permitted sender) smtp.mailfrom=nicolasgoldman07@gmail.com; dmarc=pass (policy=none) header.from=gmail.com Received: by mail-ed1-x531.google.com with SMTP id ck15so42643357edb.0 for ; Thu, 23 Feb 2023 04:19:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=76BvOQdhdRn0L1UghSKEqGC0OT29NvjyOx3k/iWQMlU=; b=BYr/JpZkOW/aOolgHm4km/GGhHD5Pzg5VLhsgZx3zV31bYY50UjfgNyTEcv0Qz8Rlc z/JXaiP+BqAQ1XOopcAVdnWM1E0ptCmjBpXWToYgpWi8/VcoUIwsV4Kzz+jX5Rgrqb/H 1wGDpVj/xF6TO30ze+2Xo0MfpvjG/XPDzcPjp8tcRODbXSvKiDC2/3cML/JdkmQ6iN5x sQFr5jNjICIW9hW/0na0CqccRfUtxF/C4pccwgvRX5fk29CY0M9zPpYvlzUVNPDlXce5 yhNIc2WvyydaOYSXNf4Ra4ZZSxo32NNqtiCbJ3KGobCipFOI6o8Z40ukrBDaEWVYiLzU 9ZZw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=76BvOQdhdRn0L1UghSKEqGC0OT29NvjyOx3k/iWQMlU=; b=lSawV66flWLXmlIH3kJrCx5jtuEXgIryvYzO+l5121cAlDfC70p7+A9JpG0K3uBTQ/ aHyg75PRIoFMpxG504drGj3im8geGGmijKNgTNCe5NQj5BOnqvwFgBDyA+6DzXfn3zDY ZjIRCK0w+LF8AZn1lvRDI9cL8Fo7+UTrE47PX/LAnuKpEB9eNCzIE9zqnyPhLMeW1Ja9 CZxI9LplbhvjdmpoBMA+E8alITDyo3MEtcolKJQWIJ4f7yU1R6AxZegLj8O21i7FqWmD FAz9A4tk+rxA+vQ4S+rBh0nnUrbGBFXwnOcRN/YS3MZrDcRbnbOqftfEPLYLcaz9m1hK 9Oog== X-Gm-Message-State: AO0yUKWzXvv/chGeUEtFc7xn7gWy3WLAHOrf5lqpqTBALqy3pRS0kYEl pAQlPKpd/UIFbb0K5sciluB0PJisHpwMmEXGNVqh0oQMValF/A== X-Google-Smtp-Source: AK7set/E8l51j94bazbq3LPLml+MRD/RegqL51kupJ+HhlcTOqOC9g4ERPcILM7xDc6BsnTkJLmkXBE8XmaSVqhffl8= X-Received: by 2002:a17:907:2be6:b0:8b1:3cdf:29cd with SMTP id gv38-20020a1709072be600b008b13cdf29cdmr8694776ejc.6.1677154788017; Thu, 23 Feb 2023 04:19:48 -0800 (PST) List-Id: Technical discussions relating to FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-hackers List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-hackers@freebsd.org MIME-Version: 1.0 From: Nicolas Goldman Date: Thu, 23 Feb 2023 09:19:36 -0300 Message-ID: Subject: Performance issues with custom kernel and schedgraph tool To: freebsd-hackers@freebsd.org Content-Type: multipart/alternative; boundary="0000000000005f8b7705f55d0764" X-Spamd-Result: default: False [-3.96 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.99)[-0.992]; NEURAL_HAM_LONG(-0.97)[-0.972]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20210112]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::531:from]; MLMMJ_DEST(0.00)[freebsd-hackers@freebsd.org]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FROM_EQ_ENVFROM(0.00)[]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; FREEMAIL_ENVFROM(0.00)[gmail.com]; DKIM_TRACE(0.00)[gmail.com:+]; MID_RHS_MATCH_FROMTLD(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; FROM_HAS_DN(0.00)[]; ARC_NA(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FREEMAIL_FROM(0.00)[gmail.com]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TO_DN_NONE(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim] X-Rspamd-Queue-Id: 4PMsXj4XCLz46w2 X-Spamd-Bar: --- X-ThisMailContainsUnwantedMimeParts: N --0000000000005f8b7705f55d0764 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello everyone, I have recently been experiencing performance issues on my FreeBSD system, specifically with the task scheduler. I have* modified the scheduler (*I=E2= =80=99m working on a short-term scheduler based on Petri Nets*)* and now see too much idle processor time. I have tried using the schedgraph tool to analyze the scheduler performance but I am receiving display errors. I want to ask the community if anyone has experienced similar issues with the FreeBSD task scheduler, and if they have any advice or solutions for improving performance. Is there any way to use the schedgraph tool in non-GUI mode, as I am having trouble running it on my system without a graphical display? Any help or suggestions would be greatly appreciated. Thank you in advance for your assistance! Best regards, Nico. --0000000000005f8b7705f55d0764 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hello everyone,

I have recen= tly been experiencing performance issues on my FreeBSD system, specifically= with the task scheduler. I have=C2=A0modified the scheduler (I=E2= =80=99m working on a short-term scheduler based on Petri Nets)=C2=A0= and now see too much idle processor time. I have tried using the schedgraph= tool to analyze the scheduler performance but I am receiving display error= s.

I want to ask the community if anyone has exper= ienced similar issues with the FreeBSD task scheduler, and if they have any= advice or solutions for improving performance. Is there any way to use the= schedgraph tool in non-GUI mode, as I am having trouble running it on my s= ystem without a graphical display?

Any help or sug= gestions would be greatly appreciated. Thank you in advance for your assist= ance!

Best regards, Nico.
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