Phoronix (RSS Feed) on Nostr: Fresh Take On Linux Uncached Buffered I/O "RWF_UNCACHED" Nets 65~75% Improvement ...
Fresh Take On Linux Uncached Buffered I/O "RWF_UNCACHED" Nets 65~75% Improvement
Linux I/O expert and block/IO_uring maintainer Jens Axboe of Meta has recently revisited his patches around uncached buffered I/O. Back in 2019 the "RWF_UNCACHED" effort was started by Axboe to address a throughput cliff in performance once the page cache fills up. That work faded away but Axboe recently took to crafting a set of fresh patches for implementing uncached buffered I/O and they are showing extremely promising results...
https://www.phoronix.com/news/Linux-RWF_UNCACHED-2024
Linux I/O expert and block/IO_uring maintainer Jens Axboe of Meta has recently revisited his patches around uncached buffered I/O. Back in 2019 the "RWF_UNCACHED" effort was started by Axboe to address a throughput cliff in performance once the page cache fills up. That work faded away but Axboe recently took to crafting a set of fresh patches for implementing uncached buffered I/O and they are showing extremely promising results...
https://www.phoronix.com/news/Linux-RWF_UNCACHED-2024