_wmd

The offwake.bt example from the article is the closest to that, but it doesn't hook any userspace functions (like malloc). That's totally possible and extremely easy -- events can be mixed from wherever in the same script and, barring some knowledge like the fact the script is running on every CPU simultaneously, things just magically work

The main problem with bpftrace is that it's a pain in the ass to compile from source just now. A tool as useful as this really wants to be available on every machine by default

Even SMP requires careful control if you want to get anything close to the actual performance of the underlying hardware, and the topology is once again very explicit

MOSIX is the only system from that era that I know is still around. It had a fork by the name of OpenMosix for some time, but according to Wikipedia ( https://en.wikipedia.org/wiki/MOSIX#openMosix ): "On July 15, 2007, Bar decided to end the openMosix project effective March 1, 2008, claiming that "the increasing power and availability of low cost multi-core processors is rapidly making single-system image (SSI) clustering less of a factor in computing"

(I admire the downvote, but please realize this is not a question of one's opinion!)

The constant use of 'I' and 'me' (19 occurrences in total) deeply tarnishes this report, and repeatedly singling out a responsible engineer, nameless or not, is a failure in its own right. This was a collective failure, any individual identity is totally irrelevant. We're not looking for an account of your superman-like heroism, sprinting from meeting rooms or otherwise, we want to know whether anything has been learned in the 2 years since Cloudflare leaked heap all across the Internet without noticing, and the answer to that seems fantastically clear.

Can the link be changed to the apparent source article? It's not as bad. https://www.scorpia.co.uk/2019/06/28/pi4-not-working-with-so...

Another method is using GeoIP's ASN database, but they also run many ASNs so it would require a little effort to ensure you have them all

Basic stats are recorded for the children of each tree node, and this is where the power-of-2 property comes from

As far as giant databases in the sky are concerned, in my book Cloudflare joined the same category as Google a long time ago. I don't like them because they've become another data-aggregating SPOF anyone with sense should actively avoid depending on

So if I'm understanding this correctly, free users have their backend servers and hosting provider information exposed to an attacker right when that information needs to be kept secret the most? This is nuts. Can someone clarify whether CloudFlare still do this? I can think of 100 scenarios where it would be better to just pull the zone (or similar) and let the site go down instead

    There are 99 users and 84066 invisible on 32 servers
    36 IRC Operators online
    16 unknown connection(s)
    53438 channels formed 
    I have 5185 clients and 1 servers
    5185 5972 Current local users 5185, max 5972
    84165 94773 Current global users 84165, max 94773
    Highest connection count: 5973 (5972 clients) (476397 connections received)

Seems this cannot be read without first understanding "object based memory hierarchies", which is new to me. This coauthor's page has a ton of related papers: http://people.csail.mit.edu/poantsai/

The question in my mind is how the Python design addresses the problems that made the perl equivalent so unusable. It's only had ~20 years of context to do better, so I'm hopeful

Similarly, your program might statically link against a GPL'd library, but only pass bulk data through a programming interface in a coarse manner, and the result may not be considered linking. The FSF FAQ even explicitly addresses this case.

GPL leaves these kinds of mechanisms blurry and ill-defined (I presume intentionally), it's just that as engineers we are commonly only taught how violations manifest in the usual case.