Max Pyziur: > > I'm trying to work to compute some processing metrics (one computation > > requires X amount of power) for CPUs and storage
Doug Herr: > "Kill A Watt Electricity Usage Monitor" > > Ignore what anybody says about power draw for something they sell. > Measure it yourself. Too many factors enter into this. I concur. Take actual measurements. Though you may find run-of-the- mill domestic power meters don't have good enough resolution to read minor variations. e.g. You might want 1 watt resolution, but it's only vaguely accurate at 5 or 10 watt increments. The least significant digit on the display can be so wildly inaccurate that you can often ignore it. Such as a reading of 126 watts could be anyway between 121 and 129. If something actually has specs for what they say it draws, it's likely to only be right under specific circumstances. Although it helps, a bit, when designing a system. If you knew this drew 20 watts, that drew 40, something else drew 200, you have to make sure your power supply can supply at least 260 watts. But possibly up to twice that to allow for initial in-rush current without stressing the supply, future expansion, and diminishing performance with age. And when you see specs like 500 watt power supply, that's the rating for what it can supply (rounded up by a large fictious amount, no doubt). Of course it's huge amperage ability on the 5 volt supply is different from its 12 volt supply capability, for example, and that particular supply may be inadequate in some of its supplies for your needs. Such as people with several older hard drives in the box, for RAID, stressing the 12 volt supply (for the drive motors). -- uname -rsvp Linux 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64 Boilerplate: All unexpected mail to my mailbox is automatically deleted. I will only get to see the messages that are posted to the mailing list. -- _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
