Aleksey Shipilëv

@shipilev

JVM Performance Whisperer. Developing OpenJDK at Red Hat. This account is run by a human, expect occasional shitposts. Send emails for important stuff.

Potsdam, Germany
Vrijeme pridruživanja: travanj 2011.

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  1. Prikvačeni tweet
    7. srp 2018.

    Perl (pcre) is my totem animal.

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  2. proslijedio/la je Tweet
    1. pro 2018.

    Periodic reminder: Usually, the important part in "We have rewritten our app from lang X to lang Y, and got tremendous performance boosts!" is "rewritten", not "from lang X" or "to lang Y", for any mature enough X and Y.

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  3. proslijedio/la je Tweet
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  4. prije 19 sati

    Pro-tip: Before diving into debugging an obscure and hard to reproduce JVM bug, make sure the system in question passes memtest.

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  5. prije 21 sat

    GUI tests are fun: robots may misclick outside the testing window. Which is fine, until you have MacOS with the taskbar/dock always visible, and misclick on it can start an external application. Anyone put "rm -rf /" as the shortcut to the dock, please?

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  6. prije 23 sata

    I wonder if the most reliable poll of the user base would be at the point when Shenandoah GC eventually phases out of the products in decades from now, and suddenly all the "But it works perfectly for us" would flood in. Works like a charm during CMS removal right now!

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  7. proslijedio/la je Tweet
    1. velj

    The asterisk belongs with the type, not the variable name. I am willing to die on this hill.

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  8. 1. velj

    That was a really good call. Woke up feeling like shit. Looked around and thanked myself there was no Brussels in sight.

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  9. 1. velj

    (whistles mindlessly) real 631m38,605s user 9176m20,853s sys 299m58,294s

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  10. 31. sij

    Меня до сих пор удивляет, что если на почтовом ящике написать "Рекламу не класть", то тебе действительно перестанут класть рекламу.

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  11. 31. sij

    Holy shit, that was great. real 920m4,456s user 10225m57,087s sys 436m22,297s

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  12. 31. sij

    The real power of OpenJDK is thousands of person-years thrown at QA/QE. Some of those years are mine. Some testing-related subprojects are projects in their own right and scale. The amount of effort exerted to "just" maintain the testbases dwarfs my expectations all the time.

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  13. 31. sij

    With sorrow, I cancelled my FOSDEM and OCW trip. Both me and are sick at this point, and it would suck even more for everyone if we get worse while I am abroad. Staying back to hold the fort here.

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  14. 31. sij

    Oh wow, it really was the reverse acquisition. is now IBM president.

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  15. proslijedio/la je Tweet
    30. sij
    Odgovor korisniku/ci

    The first Unix I used had a version of cat that would wait 5 seconds for input and then write "Meow" on the terminal to alert you that it was waiting.

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  16. 30. sij
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  17. 30. sij

    -- Эй, Брэйн, чем мы будем заниматься сегодня вечером? -- Тем же, чем и всегда, Пинки… Попробуем отдебажить билд!

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  18. 30. sij

    He is lean, mean, JIRA editing machine.

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  19. 30. sij

    Welp, need a larger machine to run full CTW bundle, apparently. No wait, let's optimize this first. real 2061m43,506s user 19274m27,986s sys 474m31,910s

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  20. 29. sij

    Scala program walks into the bar. Throws a checked exception. Throws an unchecked exception. Throws an error. Throws some odd ExecutionException interface... 😱 The bar crashes and burns.

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  21. 28. sij

    SorryMarioButYourClassIsInAnotherJarException.

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