Re: Ext4: Buffered random writes performance regression with dioread_nolock enabled

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hazem started separate e-mail threads on this issue (separated by
about an hour), and I replied to the earlier one here:

    https://lore.kernel.org/all/Yypx6VQRbl3bFP2v@xxxxxxx/

TL;DR:

1)  The patch landed in 5.6, and improved performance for some
workloads, and also fixed a potential security problem (exposure of
stale data caused by a race).

2)  If you are using a storage device >= 128GB, and a version of
e2fsprogs v1.43.2 (released six years ago), the journal size will be
1GB, which Hazem reported resolved the problem.

3) I disagree that we should revert this commit, as it only changes a
default.  If you prefer the older behavior, you can change it with a
mount option.

						- Ted



[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux