Date: Mon, 19 Mar 2001 19:15:26 +0100 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Ian Dowse <iedowse@maths.tcd.ie> Cc: current@FreeBSD.ORG Subject: Re: reboot(8) delay between SIGTERM and SIGKILL Message-ID: <59156.985025726@critter> In-Reply-To: Your message of "Mon, 19 Mar 2001 18:12:10 GMT." <200103191812.aa82109@salmon.maths.tcd.ie>
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In message <200103191812.aa82109@salmon.maths.tcd.ie>, Ian Dowse writes: > >I have noticed that reboot(8) sometimes appears not to wait long >enough before sending the final SIGKILL to all processes. On a >system that has a lot of processes swapped out, some processes such >as the X server may get a SIGKILL before they have had a chance to >perform their exit cleanup. > >The patch below causes reboot to wait up to 60 seconds for paging >activity to end before sending the SIGKILLs. It does this by >monitoring the sysctl `vm.stats.vm.v_swappgsian', and extending >the default 5-second delay if page-in operations are observed. > >On my laptop (64Mb, IDE disk) with a number of big apps running, >it can take around 20 seconds for all the paging to die down after >the SIGTERMs are sent. Sounds like a good heuristic -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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