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Prikvačeni tweet
Sneak peak at a slide from my RCU talk at
@KernelRecipes . This "Life cycle of a grace period" block diagram serves as a reference for me too now ;-)pic.twitter.com/So6QI7Wtp2
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Joel Fernandes proslijedio/la je Tweet
This is the best talks on locks I've ever seen. I can't believe how much
@kavya719 covers in 41mins: memory/compiler memory models, atomics, futexes. Wow
(via @copyconstruct's Best of 2019 tech talks list)https://www.infoq.com/presentations/go-locks/ …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Joel Fernandes proslijedio/la je Tweet
Yet another C quiz! Can you tell the output just by looking at the code? int main(void) { fork(); putchar('x'); fork(); return 0; } gcc prog.c && ./a.out Assume standard up to date Linux glibc implementation.
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Joel Fernandes proslijedio/la je Tweet
This is
using historical data to predict container performance and using cgroups to control CPU placement. CFS makes an attempt at all of these things (except using PMCs to guide placement) but it’s always going to be imperfect because...https://twitter.com/MikeTamir/status/1218573020572409856 …
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Joel Fernandes proslijedio/la je Tweet
"A Thread Synchronization Model for the PREEMPT_RT Linux Kernel " Dear Mr Bristot de Oliveira, Thank you for submitting your manuscript to Journal of Systems Architecture. I am pleased to inform you that your manuscript has been accepted for publication. /me opens a beer.
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Joel Fernandes proslijedio/la je Tweet
Well, this is hot! Learning Concise Models from Long Execution Traces ->https://www.researchgate.net/publication/338620787_Learning_Concise_Models_from_Long_Execution_Traces/references …
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Joel Fernandes proslijedio/la je TweetHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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Joel Fernandes proslijedio/la je TweetHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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The timing problem with the "spinlocks and scheduler" post that Linus is beating up could also be solved by restartable sequences (rseq). But hey I agree with him that spinlocks in userspace seem like a bad idea, vs mutex. https://www.realworldtech.com/forum/?threadid=189711&curpostid=189723 …
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...Memory, performance and tracing projects with focus on kernel/system work. CrOS is personally advocated by Linus Torvalds as the future of Desktop Linux. Here we go, USB booting my first CrOS device over the weekend on a Samsung Chromebook. ;-).
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Starting a new job at Google working on ChromeOS (CrOS) devices. Frankly I'm excited about portage and about working on x86 machines more now (versus when I was at Android). I will be working on Android as well, due to Android apps running on CrOS. Likely going to be working on..
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Joel Fernandes proslijedio/la je Tweet
Quick HOWTO for running
#arm64#kvm on your#x86 box running#qemu. https://mirrors.edge.kernel.org/pub/linux/kernel/people/will/docs/qemu/qemu-arm64-howto.html …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Joel Fernandes proslijedio/la je Tweet
You may already be running Linux v5.3! I'm excited about heap auto-initialization, pidfd_open(), global -Wimplicit-fallthrough, x86 CR4 & CR0 pinning, more kfree() sanity checks, arm64 default KASLR, and hardware security embargo documentation: https://outflux.net/blog/archives/2019/11/14/security-things-in-linux-v5-3/ …
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I am really enjoying my Linux kernel mentorship experience at both
@outreachy and LKMP and I'm getting good people. They are new but they are good and my evaluation tasks are confirming that. Looking forward to working with them!Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Joel Fernandes proslijedio/la je Tweet
New blog post: Does SMT still make sense?https://www.codeblueprint.co.uk/2019/11/05/does-smt-make-sense.html …
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Joel Fernandes proslijedio/la je Tweet
Slides of my talk on Core Scheduling for
#Virtualization at#KVMForum 2019. They were online Tuesday night already, but I've kept updating them until ~30 mins before the talk (yeah... I know!), so you may want to re-check/re-download them https://static.sched.com/hosted_files/kvmforum2019/e2/Core-Scheduling-Virtualization_KVMForum19_Faggioli.pdf …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Joel Fernandes proslijedio/la je Tweet
[$] Redesigned workqueues for io_uring https://lwn.net/Articles/803070/rss …
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Joel Fernandes proslijedio/la je Tweet
Up for crashing any kernels? Repo with 3000 syzkaller reproducers for
#linux kernel bugs: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-arts.git/tree/syzkaller-repros/linux … I like the ARTS name (Autogenerated Regression TestS). Announce email: https://lore.kernel.org/lkml/190423b9-b363-a769-64b8-935b2632441e@linuxfoundation.org/ …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Some notes on modeling non-determinism using
#PlusCal: "Modeling (lack of) store ordering using PlusCal – and a wishlist"https://people.kernel.org/joelfernandes/modeling-store-ordering-or-the-lack-thereof-using-pluscal …Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Joel Fernandes proslijedio/la je Tweet
Here’s a great
@FrankDenneman write up about the Rome memory system. It’s always amazing to see these articles put the pieces together.https://frankdenneman.nl/2019/10/14/amd-epyc-naples-vs-rome-and-vsphere-cpu-scheduler-updates/ …Prikaži ovu nitHvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi -
Joel Fernandes proslijedio/la je Tweet
Benchmarking is hard: processors learn to predict brancheshttps://lemire.me/blog/2019/10/16/benchmarking-is-hard-processors-learn-to-predict-branches/ …
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