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Differential D12277

Allow the user more control over MCA throttling
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Authored by jtl on Sep 8 2017, 3:28 PM.
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imp

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jhb
scottl
Summary

Currently, the MCA code exponentially backs off when throttling correctable errors. It does this by doubling the event limit each time it sees that many events within the throttle period.

This change allows the user to specify a different power-of-2 multiplier when throttling MCA events. This allows users to be more aggressive in limiting interrupts, if they desire.

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rS FreeBSD src repository - subversion
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jtl created this revision.Sep 8 2017, 3:28 PM
Herald added a subscriber: imp. · View Herald TranscriptSep 8 2017, 3:28 PM
jhb accepted this revision.Sep 8 2017, 6:28 PM
This revision is now accepted and ready to land.Sep 8 2017, 6:28 PM
jtl abandoned this revision.Oct 3 2025, 4:38 PM

AFAIK, no one has bemoaned the lack of this feature in the 8 years this has been sitting here. I think it is safe to abandon this.

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FreeBSD/
sys/
x86/
x86/
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FreeBSD/sys/x86/x86/mca.c

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