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It is very frustrating when a group gathers statistics and measures everything it can. Our group tires to measure what it can, keeps historical data. Then we get a call from the application owners:'Users are complaining about slow performance.'Who?'A few. I didn't keep the email. When was the last time you have seen a webframework or a database that routinely does performance benchmarks at each iteration? In fact, I don't know any. I Nike Flyknit Neon Green

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is clearly written by someone working in the real world.

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I knew from past experience that even a single web server should have a load less than 1 with all our traffic. The others were just there in case they went down. But this time, he said there was no way 1 server could handle our traffic and that was the problem. He refused to listen to reason and eventually I gave up and started working on the problem alone. I eventually found the code that was going crazy and fixed it. And voila. He assumed that the existence of 3 webservers meant we had that much load, but it was just for redundancy. If I had had metrics to prove my case, it would have gone a lot smoother. But instead I just had my experience.

was very impressed with the continuous measurements that PyPy does.

armored 1196 days ago link

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krakensden 1196 days ago link

bdunbar 1196 days ago link

days ago link

If you don't have numbers, you're not doing engineering, you're practicing druidism.

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LWN is pretty great, I'm quite happy I bought a subscription. Teams will play hot potato with issues, and all use excuses. Desktop support will blame the DB team, DB will blame the server team, then they all blame the network. All the while no one is actually measuring anything.

JonLim 1196 days ago link

´╗┐Scale Fail part 1

Oh, no, heard you very loud and clear. Was just reinforcing your anecdote by saying that it's applicable to a lot more than just scaling apps. :)

Joakal 1196 days ago linkshimon 1196 days ago linkThe site is great, but ironically a bit slow.

asymptotic 1196 days ago link

This is a phenomenal article. After wading through bullshit "X HTTP server beats Y HTTP server at serving 40 bytes of static content!!!" articles this is a breath of fresh air. This Nike Flyknit Roshe Run Black

JonLim 1196 days ago link

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Comments the article:So to avoid these ends, let's avoid these beginnings: avoid multi threading. Use single threaded programs, which are easier to design, write, and debug than their shared memory counterparts. Instead, use multiple processes to extract concurrency from the hardware. Choose a communication medium that works just as well on a single machine as it does between machines, and make sure the individual processes comprising the system are blind to the difference. This way, deployment becomes flexible and scaling becomes simpler. Because communication between processes by necessity has to be explicitly designed and specified, modularity almost happens by itself.

I think having numbers to prove your case is generally a good way to approach things. One of the best people I've ever worked with. He was generally pretty easy to get along with. Every new sysadmin or db admin came in and asked for metrics and we'd shrug and laugh nervously. (I mean, there Nike Flyknit Presto Black was a reason why hired so many new ones!)

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