Date: Thu, 10 Aug 2023 01:21:04 +0100 From: void <void@f-m.fm> To: freebsd-stable@freebsd.org Subject: Re: problems trying to use powerd with Xeon E5-2690 on HP ProLiant DL380p Message-ID: <ZNQtcFHlx3mDxVuI@int21h> In-Reply-To: <504ADC8D-6CE9-4E8F-BB6F-414C603A1F8F@longcount.org> References: <ZNQSncdYhBh9bQCC@int21h> <504ADC8D-6CE9-4E8F-BB6F-414C603A1F8F@longcount.org>
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Hi Mark, On Wed, Aug 09, 2023 at 07:52:59PM -0400, Mark Saad wrote: >Hi void > It will work , you will need to re-enable c-states and p-states >etc in the bios . Dmesg is only showing the cpu has the options but >the bios controls the ability to use it . Iirc hp has some opaque >options to enable high performance mode in the bios . This usually >kills most of the power management stuff . Google for low latency >tunings for your model and chances are you will find a pdf with >options for making the host eat more power and improve latency as >well as options that save power at the expense of increasing latency. Many thanks for this! --
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