Date: Sat, 24 Feb 2018 20:47:22 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r329929 - head/sys/vm Message-ID: <201802242047.w1OKlM89088744@repo.freebsd.org>
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Author: markj Date: Sat Feb 24 20:47:22 2018 New Revision: 329929 URL: https://svnweb.freebsd.org/changeset/base/329929 Log: Restore the pre-r329882 inactive page shortage computation. With r329882, in the absence of a free page shortage we would only take len(PQ_INACTIVE)+len(PQ_LAUNDRY) into account when deciding whether to aggressively scan PQ_ACTIVE. Previously we would also include the number of free pages in this computation, ensuring that we wouldn't scan PQ_ACTIVE with plenty of free memory available. The change in behaviour was most noticeable immediately after booting, when PQ_INACTIVE and PQ_LAUNDRY are nearly empty. Reviewed by: jeff Modified: head/sys/vm/vm_pageout.c Modified: head/sys/vm/vm_pageout.c ============================================================================== --- head/sys/vm/vm_pageout.c Sat Feb 24 20:24:57 2018 (r329928) +++ head/sys/vm/vm_pageout.c Sat Feb 24 20:47:22 2018 (r329929) @@ -1398,7 +1398,7 @@ drop_page: */ inactq_shortage = vmd->vmd_inactive_target - (pq->pq_cnt + vmd->vmd_pagequeues[PQ_LAUNDRY].pq_cnt / act_scan_laundry_weight) + - shortage + deficit + addl_page_shortage; + vm_paging_target(vmd) + deficit + addl_page_shortage; inactq_shortage *= act_scan_laundry_weight; pq = &vmd->vmd_pagequeues[PQ_ACTIVE];
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