Date: Fri, 10 Jan 2020 00:50:18 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 243233] Coffee lake frequency scaling Message-ID: <bug-243233-227-XH2S9XR1qE@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-243233-227@https.bugs.freebsd.org/bugzilla/> References: <bug-243233-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243233 --- Comment #1 from Dennis Noordsij <dennis.noordsij@alumni.helsinki.fi> --- After more testing: If I kldload cpuctl and run i7z it does appear frequency scaling is working for some default scaling setup (hover around 1200MHz-2000MHz but scale up to 5GHz under load). powerd does not seem to be able to tell the current frequency correctly (i7z can, and I have verified with basic benchmarks that performance matches i7z's output). when powerd is run with "-n maximum" it matches the above behaviour (~2GHz baseline and scale up under load, although it says it wants to go 7200MHz and IMO should be at 3600Mhz), then powerd -v drops to 800MHz under no load. this is "good enough" for me at the moment, as the default behaviour is what I'd like, but there seems be something wrong (scaling/multiplier?) with powerd/cpufreq. -- You are receiving this mail because: You are the assignee for the bug.help
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