Date: Tue, 26 Apr 2011 08:24:55 GMT From: KOIE Hidetaka <koie@suri.co.jp> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/156658: sysctl vm.idlezero_enable=1 causes hangup. Message-ID: <201104260824.p3Q8OtJt008307@red.freebsd.org> Resent-Message-ID: <201104260830.p3Q8U5gW080618@freefall.freebsd.org>
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>Number: 156658 >Category: kern >Synopsis: sysctl vm.idlezero_enable=1 causes hangup. >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Apr 26 08:30:05 UTC 2011 >Closed-Date: >Last-Modified: >Originator: KOIE Hidetaka >Release: 9.0-CURRENT >Organization: surigiken >Environment: FreeBSD freebsd.suri.co.jp 9.0-CURRENT FreeBSD 9.0-CURRENT #6: Tue Apr 26 16:14:09 JST 2011 koie@freebsd.suri.co.jp:/usr/obj/usr/src/sys/GENERIC amd64 >Description: After sysctl vm.idlezero_enable=1, many processes wait for [*vm page queue free mutex] and don't respond. It seems that the vm_pagezero() thread loops in vm_phys_zero_pages_idle() forever with mtx_lock(&vm_page_queue_free_mtx). >How-To-Repeat: sysctl vm.idlezero_enable=1 find / -type f -print | xargs grep -l hogehogehoge >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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