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@xxxxxxxxx> 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. > > > [1]: https://lore.kernel.org/linux-ext4/20200520133119.1383-1-jack@xxxxxxx/ > > -ritesh
