On Thu, 10 Dec 2020 08:38:14 -0500 Robert Sherwood <robert.sherw...@gmail.com> wrote:
> This is a very interesting article. I'm not enough of an expert on low > level device access APIs to judge its accuracy, but I thought some of > you might find it interesting. > > https://itnext.io/modern-storage-is-plenty-fast-it-is-the-apis-that-are-bad-6a68319fbc1a I had to view this article in Lynx because Firefox wouldn't display it, due to all the JavaScript. I think that is a good, apt and important metaphor for the state of modern IT. xD On the assumption one actually is in a situation where usage of NVMe devices make sense apriori, I think the article makes valid points. The catch is most of us are in situations where rotary disks are just good enough, so the very use of bus-connected SSD storage is under question. Illustrations: in terms of personal use of computers, I find that only the very latest of so-called "AAA video games" are having problems with my single spindle. YouTube doesn't really depend on the (my) disk. For some years now, I've been working in a web-business, and speaking in those terms, if you own the hardware your business runs on, you will probably be playing an optimization game where cost is sure to be a pretty serious long term concern (even though I hear that on the West they shell out enormous money for hardware since optimization experts cost even more that warehouses of underutilized hardware). I did a little check on Amazon and can see that per-TiB, rotary disks are still about half the price of various bus-connected SSDs. That's a headwind. Does it really make sense to spend thousands of iops on a requirement that could be removed spending a day or two optimizing the server application? I'm also not sure what effects RAID will have on the performance of these disks. And if you happen to be a pleb that utilizes the cloud, you can kiss your I/O optimizations goodbye since your disk actually lives on a different floor, maybe even a different building than your CPU/memory and they are connected through a thin iSCSI/FibreChannel straw you happen to share with 30 other people. However, io_uris is a very likable solution. I'm glad I read a bit about it, even if it isn't really all that revolutionary. Good solutions rarely are. ;) ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Tb7a3e3a90eab83b8-M80d775bf9dd488af3579df16 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
