|
From: | Max Reitz |
Subject: | Re: [PATCH v2 0/9] virtiofsd: Allow using file handles instead of O_PATH FDs |
Date: | Wed, 16 Jun 2021 15:41:36 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 |
On 11.06.21 21:19, Vivek Goyal wrote:
I definitely expect a hit if you just benchmark the right way. Having to open FDs all the time (for metadata operations) will have an impact (when you do lookups all the time, or open files and close them immediately). How much of an impact, that’s completely up to the filesystem’s open_by_handle_at() implementation, I presume.On Wed, Jun 09, 2021 at 05:55:42PM +0200, Max Reitz wrote:Hi, v1 cover letter for an overview: https://listman.redhat.com/archives/virtio-fs/2021-June/msg00033.htmlHi Max, What's the impact of these patches on performance? Just trying to get some idea what to expect. Performance remains more or less same or we expect a hit.
I don’t expect it to be significant for real-world use cases, though. When really doing I/O, there should be absolutely no difference, because then we’re operating with these FUSE handles that have actual (non-path) FDs attached to them.
Max
[Prev in Thread] | Current Thread | [Next in Thread] |