From 4b6c0e31385f5f27a151088c0a2b614495c4e589 Mon Sep 17 00:00:00 2001 From: Paul Duncan Date: Thu, 14 Oct 2021 12:47:50 -0400 Subject: initial commit, including theme --- content/posts/2002-01-16-kernel-fun.html | 73 ++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 content/posts/2002-01-16-kernel-fun.html (limited to 'content/posts/2002-01-16-kernel-fun.html') diff --git a/content/posts/2002-01-16-kernel-fun.html b/content/posts/2002-01-16-kernel-fun.html new file mode 100644 index 0000000..3dca062 --- /dev/null +++ b/content/posts/2002-01-16-kernel-fun.html @@ -0,0 +1,73 @@ +--- +date: "2002-01-16T14:15:59Z" +title: Kernel Fun +--- + +

+ +This weekend I decided to upgrade from my trusty 2.4.16 + preempt to +something a bit more recent. The first thing I tried was +2.4.18-pre3 + +O(1) + preempt + lock-break, +which fell over miserably on my system (eg if it didn't panic at boot I +could consistently cause a panic with a gmake -j5). After +some "testing" on +IRC with +Robert Love (ie, boot, wait +until panic and hard lock, write entire panic on piece of paper, reboot +into stable kernel and type up panic, post panic to web for Robert to +run ksymoops on, apply patch to kernel, reboot, repeat), I finally +decided to take a break from +preempt +for the week and give low latency a shot. I'm running +2.4.17 ++ rmap + +O(1) + low latency now, and it +seems to be pretty stable. I'll try out preempt + lock-break again +this weekend and let everyone know what happens. By the way, the +problems I mentioned above with preempt have to do with SMP and +preemption near interrupts -- all you single-processor users have +nothing to fear. +

+ +

+ +There has been a really amusing thread on the LKML for the last few +weeks regarding automatic kernel build configuration. The thread +started as a question from ESR about probing the ISA bus, and progressed +(devolved?) into an amusing war of metaphors between Alan Cox and ESR. +Essentially, ESR used a hypothetical "Aunt Tillie" to represtent the +typical technology-impaired "mom and pop" Linux user, who, for some +unspecified reason, opts to compile her own kernel instead of using the +modular vendor-supplied, vendor-tested, and vendor-supported version. +After the Aunt Tillie scenario made relatively little progress against +Alan Cox and a handful of other people, ESR added "Nephew Melvin" to the +list of hypothetical characters. Anyway, Alan Cox's latest contribution +to the argument: + +

+ +

+

+From: Alan Cox <alan@aunt-tillie.org>
+...
+pabs@gw-uunet:~> whois aunt-tillie.org
+...
+Registrant:
+  Melvin?  What do I type here?
+  10 Alan Turing Road
+  Surrey Research Park
+  Guildford, Surrey GU2 7YF
+  UK
+
+

+ +

+Be sure to check out +http://www.aunt-tillie.org/ +as well. +

+ -- cgit v1.2.3