Thanks for sharing that unfortunately this patch has been merged to kernel 5.7 and I am still seeing that regression with later versions that include that patch.
Hazem.
On Wed, 21 Sept 2022 at 05:44, Ritesh Harjani (IBM) ritesh.list@gmail.com wrote:
On 22/09/19 04:18PM, hazem ahmed mohamed wrote:
Hey Team,
I am sending this e-mail to report a performance regression that’s caused by commit 244adf6426(ext4: make dioread_nolock the default) , I am listing the performance regression symptoms below & our analysis for the reported regression.
Although you did mention you already tested on the latest kernel too and there too you saw a similar performance regression. But no harm in also double checking if you have this patch [1]. This does fixes a similar problem AFAIU.
-ritesh