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Tommi Prami

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Tommi Prami last won the day on January 16

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  • Delphi-Version
    Delphi 12 Athens

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  1. Tommi Prami

    Interesting read about Sleep(0/1) and SwitshToThread

    Tommi Prami replied to Tommi Prami's topic in Windows API

    That is where this journey started... 😉 -Tee-
  2. Tommi Prami

    Interesting read about Sleep(0/1) and SwitshToThread

    Tommi Prami replied to Tommi Prami's topic in Windows API

    One of the replies says that SwitchToThread will yeld to waiting thread on same CPU (not the core). If computer has multiple CPUs then Sleep(0) would run threads on other CPU also. That's how I understood the repply. But, thread cheduler might have changed over the years, so these might be very hard to be sure how it behaves... -Tee-
  3. Tommi Prami

    Interesting read about Sleep(0/1) and SwitshToThread

    Tommi Prami replied to Tommi Prami's topic in Windows API

    As I understand what they say, for some ypou would need multiple CPUs. You for sure might have such a hardware. Thanks for extra info.,..
  4. Tommi Prami
    Spoiler, SwitshToThread <> Sleep(0). https://stackoverflow.com/questions/1383943/switchtothread-vs-sleep1 Sleep(0) will allow threads on other processors to run, as well. Seems that this is quite tricky, dependig what yuo are doing and what you are trying to achioeve. No silver bullets... -tee-
  5. Tommi Prami

    Delphi 13 beta

    Tommi Prami replied to EugeneK's topic in Delphi IDE and APIs

    Hello, In case of I get Invite, if someone can make good guess to get JCL to install and compile on the beta. I would download it just in case. -Tee-
  6. Tommi Prami

    JSON benchmarks

    Tommi Prami replied to pyscripter's topic in RTL and Delphi Object Pascal

    Way cool! Is there test/comparison is Objects and/or Record serialization supported and speed etc?? Did not check code, because bit busy... I've used Grijjy in one of my hobby projects for serializing objects and/or records. Can't remember which they all are, poossibly both)
  7. Tommi Prami

    Help with JWToken

    Tommi Prami replied to Tommi Prami's topic in Network, Cloud and Web

    Unix Epoch is seconds, maybe fractions of seconds. But never the less, to me it seems to be agaisnt the standard. That it should be integer.
  8. Tommi Prami

    Help with JWToken

    Tommi Prami posted a topic in Network, Cloud and Web

    { "aud": "1", "jti": "c455147e32d593e35fe", "iat": 1746708640.21844, "nbf": 1746708640.218443, "exp": 1746715840.20109, "sub": "8314", "scopes": [ ], "user": { "name": "Prami Tommi", ... I've got JWToken that to me seems that is not standard. exp etc should not be float, but "UnixDate" is integer (Can't remeber what it is called on top of my head.) Is this some weird standard or just plain wrong? Did some googling but did not find any JWToken standard that would accept this. -Tee-
  9. Tommi Prami
    Do you have any good sources of this? (To send people that might be interested)
  10. Tommi Prami
    FYI: https://probablydance.com/2018/06/16/fibonacci-hashing-the-optimization-that-the-world-forgot-or-a-better-alternative-to-integer-modulo/ -tee-
  11. Tommi Prami
    People tend to forget things. Right? As I recall ChatGPT gave virtually identical code also, but does not change the fact that I messed up... (EDIT: What I tried to say with that ChatGPT thing wea that I think (if recall) made ChatGPT implementation first. Checked out the API calls made, Google search and found the Grahics32 implementation and went with that. I think I had no intention to make the reposiotory public of that extracted version. As I was just testing the effect of the performance cores only thing out of curiocity, but at some point thought that mayeb some one also would like to use that. At that point most likely did not even think of the origin of the code any more. etc. I should have, for sure. Would not like to hijack more this thread on this, hope all is good now as the license is changed and added reference to the oigin, make issue on the project if something else is needed to fix)
  12. Tommi Prami
    Is there Lock free or Thread safe containers in Sping4D... Asking for a friend 😉 -Tee-
  13. Tommi Prami
    At least in my case, I ran 7-Zip processes in parallel, windows did piss poor job of allocating those prcesses to perdormance cores. Anyones mileage migh vary for sure.
  14. Tommi Prami
    It is mostly from there. I think. I thought I made it clear in code or GitHUB, let me check. I think I found few starting points, when searching the solution for the problem. If you’re referring to what I said earlier, that I did write it. I honestly did no longer remembered where it originally came from. I’ll make sure to give credit to the project. In other words, I had no intention of taking credit for something that isn’t mine. -Tee-
  15. Tommi Prami
    Helllo, Depending on your CPU, you might need to set Affinity mask for the threads. If you have new Intel CPU with P and E cores you get wildly different results depending on which core threads are running at. Made siple unit top get Affinities: https://github.com/TommiPrami/Delphi.ProcessAffinity.Utils If you use it and find bugs, please make pull reguest. -Tee-
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