Date: Sun, 24 Jun 2018 16:10:20 -0700 From: bob prohaska <fbsd@www.zefox.net> To: freebsd-arm@freebsd.org Subject: RPI3 swap experiments, was Re: GPT vs MBR for swap devices Message-ID: <20180624231020.GA11132@www.zefox.net> In-Reply-To: <03C2D3C4-6E90-4054-AF79-BD7FE2B7958D@yahoo.com> References: <25F1A4BA-FBFC-4C32-85DD-5F5BA71A2B1A@yahoo.com> <20180620023253.GA89924@www.zefox.net> <a232ed45-a9a9-1017-72ed-720a6c7a8f03@sentry.org> <1D86911D-20D1-494A-822B-1C07C5598CB1@yahoo.com> <10CAC122-399D-459E-9153-ABD7E753777E@yahoo.com> <a2d7f4d3-0b6d-f82d-bae8-0988b0b54a8f@sentry.org> <20180623143218.GA6905@www.zefox.net> <03C2D3C4-6E90-4054-AF79-BD7FE2B7958D@yahoo.com>
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I've tried to replicate the RPi3 "run out of swap" experiment after updating source, kernel and world to r335576. Roughly the same things happen: Errors flood the console, when swap usage goes a bit over 80% the machine becomes unresponsive. No sign of the OOM assassin. However, -j4 buildworld got all the way to building libraries. With r334939 it always stopped in cross tools. That seems like a significant improvement in swap usage efficiency. Is this to be expected? What details were captured can be seen at http://www.zefox.net/~fbsd/rpi3/swaptests/r335576/1gbsdflash/ in case they're of interest. Thanks for reading, bob prohaska
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