Live data from Hacker News

Viewing profile — bigodanktime

bigodanktime

HN member
Joined
Sat, Sep 19, 2020, 4:44 PM UTC
HN karma
43
Public activity
14 items

About bigodanktime

PhD Student studying Operating Systems and File Systems, and little bit of work in Serverless

Recent public activity

  1. comment
    Comment #35457959

    > There is no copy with mmap You are right, if you are directly modifying the mmaped region. I always internally model my data as staging my changes to be synchronized to the mmape…

  2. comment
    Comment #35457557

    I may have parsed your statement incorrectly, but I'm assuming you are talking about the copy of data when using either mmap or File IO (memcpy versus write) Whether you do File IO…

  3. comment
    Comment #35457092

    What do you mean by work. The underlying page cache will keep much of the data actual cached if it's recent. Even databases like PostGreSQL use this to their advantage ( https://gi…

  4. comment
    Comment #35456998

    I can understand these folks struggling with what mmap is actually doing. But this isn't a new discussion about the qualities of MMAP versus file based IO etc. Although, many of th…

  5. comment
    Comment #30288231

    I'm going to self plug here on work I'm apart of that does persistent processes, although the motivation is different. I do think this paper does a good job of informing the reader…

  6. comment
    Comment #29937231

    Many conferences are starting to adopt a badge system and will evaluate your artifact. And this is becoming more and more popular, and I know many researchers that will keep these …

  7. comment
    Comment #29860574

    Its unfortunate with teaching as I see it as an opportunity to extend the good values of research and problem solving to students (at least in the later years of a degree). I guess…

  8. comment
    Comment #29860352

    Professors are rewarded for publications and almost nothing else (at least from what I've seen at the school I'm apart of), so because of it all effort goes towards publications, a…

  9. comment
    Comment #29650760

    Counts what you are afraid against. There's always some side channel attack that could possibly used to gain information, even on VM's this is true. Off the top of my head there co…

  10. comment
    Comment #29650667

    A great wrapper UI I have used for FreeBSD Jails is iocage ( https://iocage.readthedocs.io/en/latest/ ). Its a great project.

  11. comment
    Comment #29326236

    I think you are assuming all these things are independent of one another. I think deep engagement with customers directs your problem statement. Build the smallest possible thing t…

  12. comment
    Comment #27802852

    This seems to be a solution that comes at the cost of the consumer which is fine if they want to pay for it, and seems to be an option provided for more latency sensitive applicati…

  13. comment
    Comment #27798360

    Lots of interesting work is being done in this area (Currently doing research around serverless at the moment). Cold start up times still remain a pretty large issue (125ms start u…

  14. comment
    Comment #27798337

    Pretty sure its just gRPC calls, and firecracker passes events along to its firecracker-containerd services. My guess is java is slow as it works really well when the JIT can optim…