Batch v_wire_count decrements in vm_hold_free_pages().
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Authored by markj on Jul 31 2017, 1:43 AM.

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alc
kib

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rS321805: Batch v_wire_count decrements in vm_hold_free_pages().

Summary

Atomic updates to v_wire_count are a significant source of contention.

Also remove an old printf in the case where one of the pages is in the
shared-busied state; vm_page_free_toq() will panic in this case anyway.

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rS FreeBSD src repository - subversion

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Event Timeline

markj created this revision.Jul 31 2017, 1:43 AM

Harbormaster completed remote builds in B10760: Diff 31365.Jul 31 2017, 1:43 AM

markj added reviewers: alc, kib.Jul 31 2017, 1:43 AM

kib accepted this revision.Jul 31 2017, 7:26 AM

This revision is now accepted and ready to land.Jul 31 2017, 7:26 AM

alc accepted this revision.Jul 31 2017, 6:33 PM

Closed by commit rS321805: Batch v_wire_count decrements in vm_hold_free_pages(). (authored by markj). · Explain WhyJul 31 2017, 6:49 PM

This revision was automatically updated to reflect the committed changes.

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head/

sys/

kern/

vfs_bio.c

5 lines

Diff 31386

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Batch v_wire_count decrements in vm_hold_free_pages().ClosedPublicActions