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How Precision Time Protocol is being deployed at Meta

(engineering.fb.com)
221 points mfiguiere | 1 comments | 21 Nov 22 15:41 UTC | HN request time: 0.201s | source
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dis-sys ◴[22 Nov 22 04:36 UTC] No.33701952[source]▶
A quick question related to this blog -

they mentioned that most modern NICs have hardware timestamp capabilities, that is consistent with what I saw. The question is what is the availability of those PTP ready & enabled routers/switches capable of acting as a Transparent Clock? I have two concerns, most of existing routers/switches are not PTP ready, even for those ones with PTP capabilities, its PTP related features may not be enabled in production. Any experience or numbers to share? thanks!

replies(1): >>33702673 #
1. wmf ◴[22 Nov 22 06:22 UTC] No.33702673[source]▶
All recent data center switches I've seen advertise PTP; maybe it doesn't work when you turn it on though. Meta makes their own switches so they can enable and debug the software.