Date: Wed, 15 Aug 2018 05:55:13 -0700 From: John-Mark Gurney <jmg@funkthat.com> To: "Jedi Tek'Unum" <jedi@jeditekunum.com> Cc: freebsd-arm@freebsd.org Subject: Re: RPI3 swap experiments (grace under pressure) Message-ID: <20180815125513.GT97145@funkthat.com> In-Reply-To: <D04BB7AF-503F-4779-B31B-AEF2A15EA7C6@jeditekunum.com> References: <B81E53A9-459E-4489-883B-24175B87D049@yahoo.com> <20180813021226.GA46750@www.zefox.net> <0D8B9A29-DD95-4FA3-8F7D-4B85A3BB54D7@yahoo.com> <FC0798A1-C805-4096-9EB1-15E3F854F729@yahoo.com> <20180813185350.GA47132@www.zefox.net> <FA3B8541-73E0-4796-B2AB-D55CE40B9654@yahoo.com> <20180814014226.GA50013@www.zefox.net> <02fe39af-a02c-fb6a-70b0-da3b7fd06c22@goodgas.com.au> <20180814213107.GA51051@www.zefox.net> <D04BB7AF-503F-4779-B31B-AEF2A15EA7C6@jeditekunum.com>
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Jedi Tek'Unum wrote this message on Tue, Aug 14, 2018 at 17:17 -0500:
> I have one question??? when was the last time anyone saw Solaris kill a process because the system was under memory stress? In my experience, NEVER! And I wouldn???t say that the system became unreasonably unresponsive either.
At least for Solaris 2.5, they would not allow overallocation of swap...
If you had pages that could be modified, you had to have enough swap
storage to store a copy of those pages... If you didn't, you'd get an
out of memory error when trying to allocate the memory, such as forking,
sbrk or mmap'ing...
FreeBSD has long allowed overallocation of swap because w/ early
computers most people didn't have enough storage to handle it, and
most memory won't be used...
--
John-Mark Gurney Voice: +1 415 225 5579
"All that I will do, has been done, All that I have, has not."
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