@baconandcoconut Ended up to this because it has been average on being "super inclusive" without having to waste time on doing that ;---)

@mikebabcock icann does not solve network problems :-) they standardize naming which is always for the better.

@baconandcoconut BR, <first name>

https://www.icann.org/en/blogs/details/new-icann-publications-explain-blockchains-and-name-system-technologies-17-10-2024-en #icann #blockchain #dns #ens #pns

This could be my next desktop albeit there is a proprietary OS installed instead of Linux: https://system76.com/desktops/thelio-astra

Mary Trump is warning about Donald’s dementia--yet corporate media still refuses to cover it! My new article about what Mary-- a psychologist and someone who has known Donald all her life--is seeing that demands more media attention given the stakes: https://deanobeidallah.substack.com/p/mary-trump-is-warning-about-donalds

Filled out my ballot over the weekend — a rather time-consuming task in Colorado, as we have a lot of things to vote.

Now I just have to endure a few more weeks while the rest of the country catches up. And hope I don't find myself living in a fascist nation...

⚡️North Korean troops to arrive in Kursk tomorrow, military intelligence says. “We are waiting for the first units tomorrow in the Kursk direction,” military intelligence chief Kyrylo Budanov said, though he did not specify how many would be deployed. https://kyivindependent.com/north-korean-troops-to-arrive-in-kursk-tomorrow-military-intelligence-says/

🐦🔗: https://nitter.oksocial.net/KyivIndependent/status/1848819197377155078#m

[2024/10/22 20:10]

I feel seen...

@gromit I’m happy to do the patch for tpm2_get_random(). It’s kind of fun task anyhow and I think my approach is legit (and tried and tested given this is how memory reclaimers in simplest possible terms).

I was already blown away of the power of eBPF when I found this randomly while fixing another bug. It’s pretty hard to predict performance issues, and now I’m even more blown up and amazed because I had a half-baked solution ready for the oven before there even was a problem ;-)

#bpf #ebpf

@gromit I’m happy to do the patch for tpm2_get_random(). It’s kind of fun task anyhow and I think my approach is legit (and tried and tested given this is how memory reclaimers in simplest possible terms).

I was already blown away of the power of eBPF when I found this randomly while fixing another bug. It’s pretty hard to predict performance issues, and now I’m even more blown up and amazed because I had a half-baked solution ready for the oven before there even was a problem ;-)

#bpf #ebpf

#Fedora has the parts of #LibreOffice in the default install that I never ever use and lacks exactly the only part that I ever do actually use: LibreOffice Draw.

It is actually good. I try to be sometimes a cool kid and do something with Inkscape but the unfortunate truth is that I don't have talent for making visuals.

Most of drawings I've done last 10 years have ended up been made with Draw through exclusion process:

1. First I think that "this is THE day that I'll master Inkspace, I'm so excited". It should go without saying but yeah both experience and results end up being a nightmare.
2. Then I write these Mermaid and realize that the approach just plain does not work for me. I don't what it is but my thoughts both fly. I prefer writing code when it is actual source code going either upstream or production, not fake code with horrible syntax.
3. Web tools, well, not a fan, and this is universal but I often try them only to realize that I think best offline. They are horrible experience that I totally dislike from the bottom of my heart.
4. yED is kind of interesting but no.https://bugzilla.kernel.org/show_bug.cgi?id=219383
5. LibreOffice Draw: OK I cannot say that I like this but I neither can say I dislike this so let's draw the damn picture. Not the most exciting task in my life, can't say I love this, but I get something done that I'm only mildly ashamed of.

This is it how it goes every single time.

@gromit i don't know but i don't mind getting a report :-) this was great discussion BTW. i had made a theory without experience any "visible issue" just looking at traces. So it is like already in the half-way... thank you!

@gromit Thanks for asking. I randomly noticed this with custom eBPF traces while debugging the boot-time issue. It is just a guess but this does add more and longer wait states here and there so theoretically could be related but obviously I cannot promise that.

@gromit i might actually might have hunch for this but have been unmotivated to move forward before these patches are merged. One thing at a time IMHO, especially with performance fixes.
NOTE: this is a hyphothesis.

tpm2_get_random() needs to be reconsidered with encryption as hwrng calls it often enough and there's now more overhead.

It pulls entropy in small chunks subtracting the length in the look like you would use read() syscall from user space. This is not right. This leads to small and variable size exchanges and yeah generally that equates to an inefficient implemenation with bad latency properties.

A better implementation would build on two concepts:

1. Have a pool "struct tpm2_random_pool" per caller with a fixed-size buffer in page granularity. E.g. hwrng end of TPM driver would have an instance. This would be exta argument for tpm2_get_random().
2. Have low and high watermarks (or thresholds) for triggering the pull from the chip so that it does not start to throttle.

Normally when the call is made entropy is served from the pool. When going below low water mark a thread (e.g. kthread, workqueue) is woken and less entropy is returned to the caller. Thread then fills the pool with fixes-size requests up until it goes above the high watermark.

I've posted my first patch set early on when the bug was recognized and also reporter confirmed that my fixes do in fact sort out the issue. There's been already some push to also sort some IMA issue but it is chaos if you start to include tons of random fixes to a single patch only because nobody pays any attention.

So I will work on that random pool patch after and also promise not to do anything before my first patch set has landed. With those ideas anyone who wants send me e.g. an RFC patch that I'm happy to give feedback.

@vbabka @hyeyoo @ljs @lkundrak i have some incredibly inefficient workflows in some tasks that i do every week at least, and i know it. actually to level up in workflows, hanging out with students and new comers in the industry is really the best way to fix that side. they always know latest shit :D

@vbabka @ljs @hyeyoo @lkundrak need look into that. i've so far used only "b4 am"... that's was the example command I saw when i first time heard about b4 years ago and have been since motivating myself to spend 15 minutes with the man page ;-)

@ljs @hyeyoo @lkundrak right, thanks for the explanation!

i had this machine as a brick for a while, became lazy and did only QEMU, a few perf glitches went through my screening, so addressing that not happening ever again, and start doing regular hardware tests. QEMU is both blessing and a curse ;-)

@ljs @hyeyoo @lkundrak ofc at min tested-by

@ljs @hyeyoo @lkundrak did the trick, thanks ;-) yeah, point here was that it was a patch set with kselftest to test that i have all testing shenanigans installed in fedora, thus grabbed my attention (was looking something out of my sandbox).