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[perfsonar-user] Question regarding performance issues after Meltdown and Spectre mitigations


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  • Subject: [perfsonar-user] Question regarding performance issues after Meltdown and Spectre mitigations
  • Date: Thu, 25 Jan 2018 09:35:28 +0000
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  • Ironport-phdr: 9a23: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

Hello,

 

Has anyone noticed an effect on network performance on perfsonar metrics after the mitigations have been applied on their node?

 

Unfortunately our node was recently reinstalled (November 2017) and previous data was for different hardware so I can’t compare properly. Having said that, I don’t see a major drop in performance comparing with a month before the mitigations were activated: Mitigations went live, if you had automatic updates enabled, on January 5 (or around that date), and required a reboot. In some cases (pre-Skylake processors) it requires a BIOS update as well. Our node, perfsonar01.jc.rl.ac.uk, has all mitigations active according to this detector script: https://github.com/speed47/spectre-meltdown-checker

 

Kind regards.

 

--

Athanasios Kanaris

Research Infrastructure Group – Scientific Computing Department

Science and Technology Facilities Council – RAL Harwell Campus

tel: 01235 567197 - ext: 7197

email/skype:

 


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