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An Unbelievable Demo

brendangregg.com

61–70 of 478 posts

Re: An Unbelievable Demo

#61
post #56

How is information in this blog related to Wikipedia article on DTrace [1] where one can read "DTrace is ... originally created by Sun Microsystems" and "Original author(s): Bryan Cantrill, Adam Leventhal, Mike Shapiro (Sun Microsystems)"? [1] https://en.wikipedia.org/wiki/DTrace

Quite simply, it is not. The author is not claiming to have written DTrace, but rather, tools that made use of DTrace. From the introduction: "Sun Microsystems had just released DTrace" and "I was busy writing and publishing advanced performance tools using DTrace".

Re: An Unbelievable Demo

#62
post #56

How is information in this blog related to Wikipedia article on DTrace [1] where one can read "DTrace is ... originally created by Sun Microsystems" and "Original author(s): Bryan Cantrill, Adam Leventhal, Mike Shapiro (Sun Microsystems)"? [1] https://en.wikipedia.org/wiki/DTrace

Look at footnote 28. https://en.wikipedia.org/wiki/DTrace#cite_note-28

Re: An Unbelievable Demo

#63

Reminds me of when Apple started providing "smaller size updates" to OS X. I was curious about the details since my doctorate had touched on the topic, so I worked my contacts (I had a few in Apple engineering from the FreeBSD / OS X relationship) and after a few months I got back as answer: "We're using a tool called bsdiff, are you familiar with it?" I was indeed, since I was the author of said tool. (Just to be cl…

I don't understand what bsdiff does, or is. I am a software developer and I frankly have no clue what I would ever use bsdiff for! I've read what it does (libraries for building and applying patches to binary files) and still don't really have a sense for what the purpose of this tool is.

What are some real life use cases for it? When does a developer need such a tool?

Re: An Unbelievable Demo

#64
post #56

How is information in this blog related to Wikipedia article on DTrace [1] where one can read "DTrace is ... originally created by Sun Microsystems" and "Original author(s): Bryan Cantrill, Adam Leventhal, Mike Shapiro (Sun Microsystems)"? [1] https://en.wikipedia.org/wiki/DTrace

Sun developed DTrace the kernel building blocks, Brendan Gregg became an expert on it and made scripts that actually did useful stuff with them. The VIP was selling a GUI around Brendan Gregg’s scripts.

Re: An Unbelievable Demo

#65
post #56

How is information in this blog related to Wikipedia article on DTrace [1] where one can read "DTrace is ... originally created by Sun Microsystems" and "Original author(s): Bryan Cantrill, Adam Leventhal, Mike Shapiro (Sun Microsystems)"? [1] https://en.wikipedia.org/wiki/DTrace

What do you mean? Brendan didn't create DTrace, he created DTraceToolkit and this VIP took his work and presented it as his own new DTrace-based product.

Re: An Unbelievable Demo

#66

> a heavy American accent Any non-Americans want to chime in on what is a heavy American accent? I’m imagining heavy southern accent, but maybe this is something that can only be heard by non-Americans?

Rhoticity (the r sound in words like butter).

https://en.m.wikipedia.org/wiki/Rhoticity_in_English

Re: An Unbelievable Demo

#67
post #20

Earlier quoted context omitted.

> As someone who has spent a lot of time in open source, forks are not a problem, they are indicative of a problem. Forks because the main project is not responding to a need are not a problem. Forks just because some project or product believes it gives them more control and they don't interface with the original project usefully are a sort of a problem. Those aren't necessarily started because of a community need,…

Why? If someone wants more control their interests already aren’t aligned with the community. Developer resources aren’t just some faucet easily redirected. It’s worse to have people trying to jam shit into the main project if they don’t actually care about the main project. That’s how you get contributions that are huge hacks and require more work to review and iterate on than is worth it to the community. If some c…

> That’s how you get contributions that are huge hacks and require more work to review and iterate on than is worth it to the community.

And yet the author here is saying please work together. Presumably he or the community is okay with picking apart those huge hacks. I'm not sure why you should care what that community is willing to accept, unless you're part of it.

> If some company forks for an observability product and doesn’t contribute back, they clearly don’t want to. Don’t try to force them.

Who's forcing anyone? Did you not notice the "please" he starts that statement with?

> Demanding people contribute to your project instead of forking just sounds like demands to pay homage more than anything.

That's just a straw man, nobody demanded anything, and I'm not sure why you'd even try to insinuate he was when he literally says please.

If I had to paraphrase the part of the post you're critiquing, I would do so as "If you're using these tools, don't feel like you have keep any stuff you do separate. We'd like to build something better for everyone, so feel free to contribute to the project rather than keeping it separate and we can all build on each other's work." That's pretty standard open source ideals IMO.

Re: An Unbelievable Demo

#68

> a heavy American accent Any non-Americans want to chime in on what is a heavy American accent? I’m imagining heavy southern accent, but maybe this is something that can only be heard by non-Americans?

Imagine a British accent. Now imagine that that is what’s normal; everyone in your country speaks it. Suddenly American sounds very different.

Specifically in my limited experience stuff like pronouncing t’s like d’s and soft back-in-the-throat r’s. “Budder” vs. “buttah”, for example. American vowels tend to sound larger as well in my experience.

Re: An Unbelievable Demo

#69

> a heavy American accent Any non-Americans want to chime in on what is a heavy American accent? I’m imagining heavy southern accent, but maybe this is something that can only be heard by non-Americans?

[deleted]

Re: An Unbelievable Demo

#70
I almost had an heart attack last week when I noticed that a library I've used for work in the last year wasn't open source, but rather source available.

Thankfully, my employer had some licenses for the library without my knowledge, but it ain't fun to break licenses at work, especially when you don't notice until months later.

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