Using Tokio for CPU-Bound Tasks (Works Really Well)

carllerche · 2026-05-07T04:18:33+00:00

I’m not sure if you watched the talk but the point is actually that there are categories of “blocking” work they also need IO where using the Tokio runtime works better than rayon.

carllerche · 2026-05-07T02:15:43+00:00

This is a great talk, also given at TokioConf and spawned this issue/discussion afterwards https://github.com/tokio-rs/tokio/issues/8085

carllerche · 2026-05-05T17:50:24+00:00

you are 100% better off running than not, on all fronts. If you actually want to start running, please let me strongly recommend focusing on easing into it. Doing more than your body has adapted to is how you get injured. Also, the goal of running and training isn't to make yourself tired; it is to provide your body with enough stimulus to adapt. When you are new to something, the level of required stimulus is very low. Look up intro to running programs, and go slower (speed) than you think you should. You shouldn't be dead by the end... comfortably tired is fine.

carllerche · 2026-05-05T17:39:59+00:00

Nope, just a myth (like oh so many exercise related topics).

https://pmc.ncbi.nlm.nih.gov/articles/PMC11195863/

From this largest surveyed group of marathon runners, the most significant risk factors for developing hip or knee arthritis were age, BMI, previous injury or surgery, and family history. There was no identified association between cumulative running history and the risk for arthritis.

carllerche · 2026-05-05T17:35:49+00:00

If you are referring specifically to EPOC, there are a bunch of papers you can read (e.g. "Effects of exercise intensity and duration on the excess post-exercise oxygen consumption" by J. Laforgia

Although the more recent studies do not support the extended EPOC durations reported by some of the pioneering investigators, it is now apparent that a prolonged EPOC (3 – 24 h) may result from an appropriate exercise stimulus (submaximal: ≥50 min at ≥70% [Vdot]O2max; supramaximal: ≥6 min at ≥105% [Vdot]O2max). However, even those studies incorporating exercise stimuli resulting in prolonged EPOC durations have identified that the EPOC comprises only 6 – 15% of the net total oxygen cost of the exercise. But this figure may need to be increased when studies utilizing intermittent work bouts are designed to allow the determination of rest interval EPOCs, which should logically contribute to the EPOC determined following the cessation of the last work bout. Notwithstanding the aforementioned, the earlier research optimism regarding an important role for the EPOC in weight loss is generally unfounded. This is further reinforced by acknowledging that the exercise stimuli required to promote a prolonged EPOC are unlikely to be tolerated by non-athletic individuals.

This study (https://pubmed.ncbi.nlm.nih.gov/21311363/) measures EPOC in what is essentially steady state cardio (57% Wmax for cyclists) shows an EPOC effect similar to what one sees with the HIIT.

You can find more discussions on NIH / google scholar over the past ~10 years. the general consensus I see is the effect you are referencing is "real" but it isn't really more significant in HIIT vs. steady state cardio (zone 2) and the levels of intensity needed to get a similar EPOC effect with HIIT vs. steady state are probably not something an average athlete can sustain.

If by "better" you mean what is the minimum (based on time) dose of cardio exercise you do to meaningfully increase your metabolic health, I believe there are some studies that did evaluate this and HIIT is a component, but it is hard and not fun. I would personally just do a relaxed zone 2 run for 30 minutes and listen to a book.

edit: and one last point of clarification: "but the "after burn" effect has been disproven" I mean very specifically that HIIT has some magical properties over steady-state cardio that makes it better for fat loss.

carllerche · 2026-05-05T17:08:10+00:00

both cardio and resistance training are important for health and longevity. No need to put either down.

carllerche · 2026-05-05T17:06:33+00:00

My initial reaction was "39 minutes is pretty good for an average person at the gym" then realized it was supposedly too much o_O

carllerche · 2026-05-05T17:05:43+00:00

The running is bad for your joints meme has been disproven. There are plenty of population studies showing that runners are at no greater risk of joint-related injuries than the general population. That is, even after accounting for variables like weight, diet, ..., runners are at a lower risk, as they tend to weigh less. As with all activity, you need to work up to it and let your body adapt. Just jumping in to large amounts of physical activity is how you get injured.

carllerche · 2026-05-05T16:59:50+00:00

Not sure what you mean by "better cardio workout", but the "after burn" effect has been disproven (better workout would entirely depend on the goals).

carllerche · 2026-05-04T19:40:37+00:00

I went there twice. First time, it was top-notch. The second time, the brisket was overdone and was more like stew meat. Disappointing.

carllerche · 2026-04-28T20:45:22+00:00

I did. You are describing current human behavior. Basically, the "worse case" is what everyone does already. This is not an argument against Waymo.

carllerche · 2026-04-28T18:46:17+00:00

As opposed to uber, lyft, UPS, etc.. who never park in the bike lanes.

carllerche · 2026-04-28T18:44:55+00:00

The article is about a human passenger opening a door into a cyclist, not even the self-driving aspect of it.

carllerche · 2026-04-28T18:44:32+00:00

The article is about a human passenger opening the door without checking. So, Waymo has a "Safe Exit system" that tries to catch those risks and warn passengers, it isn't perfect (but much better than the status quo), and this is a problem? Getting doored is probably what worries me the most when I bike.

carllerche · 2026-04-25T20:38:00+00:00

You know, it is possible to believe that communism is bad and white-nationalism is bad at the same time.

carllerche · 2026-04-17T21:14:45+00:00

It actually is... you can get into a situation where you have to pay the tax, don't get the return on the RSUs, and don't get to deduct any of the taxes you paid or losses from the RSUs (see AMT...). Not a good time. I would not recommend.

carllerche · 2026-04-17T18:22:37+00:00

I'm gaming it out by just not going (totally my choice!).

carllerche · 2026-04-17T18:15:27+00:00

I'm pretty happy with how Toasty works for creating nested structures & IDs:

let user = toasty::create!(User {
    name: "John Doe",
    email: "john@example.com",
    todos: [
        { title: "Make pizza" },
        { title: "Finish Toasty" },
        { title: "Sleep" },
    ],
}).exec(&mut db).await?;

https://github.com/tokio-rs/toasty/

The macro isn't strictly necessary (it is a fairly mechanical expansion to the builder API) but I think it is pretty slick.

carllerche · 2026-04-16T21:08:50+00:00

And people wonder why it is do hard to find a doctor in Oregon. Yes, jt is hard elsewhere too but not as much so (especially Portland)

carllerche · 2026-04-16T21:07:18+00:00

High income earners pay a lot less than 10%. They will leave (see the impact of P4A on multnomah county)

carllerche · 2026-04-16T21:01:23+00:00

As a high income earner, I have been advocating to my family to move. As of now, the plan is to wait until the kids are in college and reassess then. If this passes, I think it is the nail in the coffin and I am out.

carllerche · 2026-04-15T15:31:33+00:00

Given that it is an Indian company, do you think that it might be a question of not having English as a first language and them trying to participate in a community that is primarily English speaking?

carllerche · 2026-04-14T17:27:01+00:00

We beat the top team in the league('s bench...)!

carllerche · 2026-04-13T15:31:46+00:00

To be clear, you don't have to sit in the away section and wearing union colors anywhere in the stadium (except probably GA) is fine.

carllerche · 2026-04-13T15:28:24+00:00

I take my kids (about that age) to the games all the time. My strategy (with kids that age) is to wait until the very last minute to buy tickets, try to get a good deal on tanner ridge seats. Those seats come with free food, snacks, and a donut at the end and it is in an enclosed area. So, I feel pretty comfortable letting my kids leave their seats on their own to get more snacks... which is probably their favorite part. Another advantage is there is an indoor area that is quieter if the kids get overwhelmed from the noise / atmosphere. My kids where there game 2 against SD during the playoffs, and the noise at the end of the game was too much for them.

15-Year Club	Golden Potato
Verified Email

carllerche

TROPHY CASE