Re: [PATCH v8 0/6] vfs: Use dlock list for SB's s_inodes list

[Waiman Long]

On 02/25/2018 09:47 PM, Dave Chinner wrote:
> Hi Waiman,
>
> What's happened to this patchset? Any plans to repost a more recent
> version?
>
> FYI, I just ran a workload that hit 60% CPU usage on sb inode list
> lock contention - a multithreaded bulkstat scan of an XFS filesystem
> with millions of inodes on SSDs. last time I ran this (about 18
> months ago now!) I saw rates of about 600,000 inodes/s being scanned
> from userspace. The run I did earlier today made 300,000 inodes/s on
> the same 16p machine and was completely CPU bound....
>
> Cheers,
>
> Dave.

I was planning to repost the patchset with the latest change last
November and then Meltdown/Spectre happened. I was drafted into
backporting fixes to RHEL6. Hopefully, I can finish up the work in early
March and work on my upstream patches again.

Cheers,
Longman