Date: Wed, 22 Feb 2023 10:39:24 -0300
From: Nicolas Goldman <nicolasgoldman07@gmail.com>
To: "questions@freebsd.org (" <questions@FreeBSD.org>
Subject: Performance issues with custom kernel and schedgraph tool
Message-ID: <6327ECF7-DA1F-4144-B2CF-F9E3CE7B55C2@gmail.com>
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--Apple-Mail=_B7955D73-2A38-4FFC-8127-70A874A5C10F Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 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.= --Apple-Mail=_B7955D73-2A38-4FFC-8127-70A874A5C10F Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 <html><head><meta http-equiv=3D"content-type" content=3D"text/html; = charset=3Dutf-8"></head><body style=3D"overflow-wrap: break-word; = -webkit-nbsp-mode: space; line-break: after-white-space;"><div>Hello = everyone,</div><div><br></div><div>I have recently been experiencing = performance issues on my FreeBSD system, specifically with the task = scheduler. I have<b> modified the scheduler (</b>I=E2=80=99m working on = a short-term scheduler based on Petri Nets<b>)</b> 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.</div><div><br></div><div>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?</div><div><br></div><div>Any help or suggestions would be = greatly appreciated. Thank you in advance for your = assistance!</div><div><br></div><div>Best regards, = Nico.</div></body></html>= --Apple-Mail=_B7955D73-2A38-4FFC-8127-70A874A5C10F--
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