Date: Sat, 4 Jan 2025 10:08:33 -0800 From: Craig Leres <leres@freebsd.org> To: Karl Denninger <karl@denninger.net>, freebsd-hackers@freebsd.org Subject: Re: curious crashes when under memory pressure Message-ID: <4094b79b-c54a-4953-b693-1b4e8387cf9f@freebsd.org> In-Reply-To: <33db3282-25c4-42fb-8d97-1918d52fa9e2@denninger.net> References: <CAPx1GvfwqFqvMm0RkTvxa4BJStvOdG0=pNx2dCuWEzCXsqhqHw@mail.gmail.com> <slrnvnij2h.26bu.pmc@disp.intra.daemon.contact> <CAPx1GvfOh4g1AeOcYXC26W5jbPAgA_E_t7CW9chg4miC8c15-w@mail.gmail.com> <9e71d8eb-74c3-4bcb-89b1-90d4f9746168@quip.cz> <33db3282-25c4-42fb-8d97-1918d52fa9e2@denninger.net>
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On 1/4/25 09:36, Karl Denninger wrote: > What's the argument for swapping to a mirror in the first place? If the > issue is throughput IMHO the answer is to swap to multiple devices. I thought the idea here is if your swap is not redundant and it goes away the system crashes (or otherwise misbehaves)? I used a beefy poudriere build server (48 cores, 192G, 6 x 480GB nvme) and I build > 1000 packages daily. I see lots of build failures (usually 2-3 a week) but instead of core dumps I see "Killed" in the poudriere logs. Appended is one from today. (Not sure what's up with the symlink failure at the very end...) Craig =>> Building www/mod_wsgi4 build started at Wed Jan 1 01:53:31 PST 2025 port directory: /usr/ports/www/mod_wsgi4 package name: ap24-py311-mod_wsgi-4.9.2 building for: FreeBSD zinc.ee.lbl.gov 14.2-RELEASE FreeBSD 14.2-RELEASE amd64 maintained by: douglas@douglasthrift.net Makefile datestamp: -rw-r--r-- 1 root wheel 1139 Jun 28 2023 /usr/ports/www/mod_wsgi4/Makefile Ports top last git commit: eda5eaff66d Ports top unclean checkout: yes Port dir last git commit: 3d9a815d9c5 Port dir unclean checkout: no Poudriere version: poudriere-git-3.4.2 Host OSVERSION: 1402000 Jail OSVERSION: 1402000 Job Id: 39 [...] ===> License APACHE20 accepted by the user Killed ln: /usr/local/poudriere/data/logs/bulk/14release-current-patched/2025-01-01_00h00m12s/logs/errors/ap24-py311-mod_wsgi-4.9.2.log: File exists build of www/mod_wsgi4@py311 | ap24-py311-mod_wsgi-4.9.2 ended at Wed Jan 1 01:54:28 PST 2025 !!! build failure encountered !!!
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