From mboxrd@z Thu Jan 1 00:00:00 1970 From: mutiny.mutiny@india.com (Donald ODona) Date: Wed, 14 Feb 2018 09:18:58 +0000 (UTC) Subject: [TUHS] PDP-7 Unix Paper In-Reply-To: <20180214022122.GA7026@mcvoy.com> References: <20180213214829.GA19971@minnie.tuhs.org> , <20180214022122.GA7026@mcvoy.com> Message-ID: <970809088.34989.1518599938314.JavaMail.tomcat@india-live-be02> already 20 years ago I met a guy (masters degree, university) who never freed dynamically allocated memory. He told me he is 'instantiating a object', but had no idea what an heap is, and what dynamically allocated memory means. At 14 Feb 2018 02:23:07 +0000 (+00:00) from Larry McVoy : > On Wed, Feb 14, 2018 at 10:30:52AM +1100, Dave Horsfall wrote: > > I'm still astonished at the constraints those guys had to suffer: > > > > PDP-7 Unix provided a multitasking environment by dividing the 8K > > words of memory into two halves. The lower half of memory was > > reserved for the kernel. The upper half of memory was set aside for > > the currently running process. > > > > But you try and tell the young people today that... and they won't believe > > you. > > Don't even get me started. Young people think that a VM is a server. > I wrote a microbenchmark suite, lmbench, and I get people sending me > email that they get inconsistent results on their VM. > > The lack of knowledge that would make someone ask about that is stunning.