<div dir="ltr">I hoe you meant to say the Unix kernel required 32MB of RAM.  I know the Xenix kernel required that much, back when I was learning Pascal and C on it while at Va Tech in the early 90s.<div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, May 20, 2016 at 3:24 PM, Bret Busby <span dir="ltr"><<a href="mailto:bret.busby@gmail.com" target="_blank">bret.busby@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 21/05/2016, Tom H <<a href="mailto:tomh0665@gmail.com">tomh0665@gmail.com</a>> wrote:<br>
> On Fri, May 20, 2016 at 6:51 PM, Paul Smith <<a href="mailto:paul@mad-scientist.net">paul@mad-scientist.net</a>> wrote:<br>
>> On Thu, 2016-05-19 at 16:56 -0700, MR ZenWiz wrote:<br>
>>><br>
>>> I have 16GB of RAM with almost 13GB of swap space (holdover from when<br>
>>> I only had 8GB - never updated). I'm running on an i7 (effectively 8<br>
>>> CPUs).<br>
>><br>
>> The old adage of "swap = 0.5x RAM" makes no sense for systems with >4G<br>
>> RAM, which many systems have nowadays.<br>
>><br>
>> Personally I would never add more than 2G swap to any of my systems,<br>
>> regardless of how much RAM they have. 13G swap is _really_ asking for<br>
>> trouble.<br>
><br>
> Didn't the old adage predate s2ram (for which you need SWAP=RAM)?<br>
><br>
<br>
</span>My memory, from the time of Win95, etc, was that the swap space should<br>
be twice the size of the RAM, and, when I first learnt UNIX, we were<br>
told by the lecturer, that the UNIX kernel required 32GB of RAM, which<br>
was why paging occurred. That was about 20-30 years ago, when BSD was<br>
4.3, and SCO UNIX was System V v7, or something like that.<br>
<span class="im HOEnZb"><br>
<br>
--<br>
<br>
Bret Busby<br>
Armadale<br>
West Australia<br>
<br>
..............<br>
<br>
"So once you do know what the question actually is,<br>
 you'll know what the answer means."<br>
- Deep Thought,<br>
 Chapter 28 of Book 1 of<br>
 "The Hitchhiker's Guide to the Galaxy:<br>
 A Trilogy In Four Parts",<br>
 written by Douglas Adams,<br>
 published by Pan Books, 1992<br>
<br>
....................................................<br>
<br>
</span><div class="HOEnZb"><div class="h5">--<br>
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