Date: Sat, 30 Jun 2018 09:05:22 +1000 From: Trev <freebsd-arm@sentry.org> To: freebsd-arm@freebsd.org Subject: Re: RPI3 swap experiments Message-ID: <c6b8842a-fcc5-8e11-5a03-ba76eb3c5dea@sentry.org> In-Reply-To: <20180629155131.GA35717@www.zefox.net> References: <20180626222834.GA20270@www.zefox.net> <28012DFB-37A0-461A-BB62-CD3EE61E82F0@yahoo.com> <20180627054027.GA22144@www.zefox.net> <CC72E766-03CB-476C-8F2B-DAAC266CE63D@yahoo.com> <20180627194217.GA27793@www.zefox.net> <C6303FC5-B412-472C-98E4-9A1E45C38535@yahoo.com> <20180628022457.GA30110@www.zefox.net> <7B9D272D-3EDE-46FA-8A1C-AEE65047167C@yahoo.com> <20180628163328.GA33408@www.zefox.net> <51e208b4-9f14-58f7-1e70-6ef8db2c0bed@sentry.org> <20180629155131.GA35717@www.zefox.net>
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bob prohaska wrote on 30/06/2018 01:51: > On Fri, Jun 29, 2018 at 10:28:25PM +1000, Trev wrote: >> >> Jun 29 20:20:35 rpi3 kernel: pid 66844 (c++), uid 0, was killed: out of >> swap space >> >> At the time of "out of swap" only 157M of the 4G swap was in use. The >> 4GB swap partition is on a 4GB USB2 memory key (da1p1), everything else >> is on the sdcard. There are no excessively long ms/w being recorded. >> There are no USB or other related errors. >> > > That's a little surprising, and disturbing. By my experience your setup > should have run to completion. > > Do you see a "too much swap" complaint? I don't know if it's a problem, > but 4 GB of swap triggers one on my RPi3. 3 GB does not. 2 GB is enough > to finish -j4 buildworld. Indeed, yes: warning: total configured swap (1035254 pages) exceeds maximum recommended amount (921968 pages). warning: increase kern.maxswzone or reduce amount of swap. (I get a similar warning for the RPi2B which has 2GB of swap, but uses 1.4G+ peak during a -j4 buildworld and always completes successfully.) I'll reduce it to 2G and see what happens in 5 hours...
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