Re: [dm-devel] [PATCH] dm-writecache: improve performance on Optane-based persistent memory

2020-04-29 Thread Mikulas Patocka
On Wed, 29 Apr 2020, Heinz Mauelshagen wrote: > On 4/29/20 6:30 PM, Mikulas Patocka wrote: > > Hi > > > > This is the clflushopt patch for the next merge window. > > > > Mikulas > > > > > > From: Mikulas Patocka > > > > When testing the dm-writecache target on a real Optane-based persiste

Re: [dm-devel] [PATCH] dm-writecache: improve performance on Optane-based persistent memory

2020-04-29 Thread Heinz Mauelshagen
On 4/29/20 6:30 PM, Mikulas Patocka wrote: Hi This is the clflushopt patch for the next merge window. Mikulas From: Mikulas Patocka When testing the dm-writecache target on a real Optane-based persistent memory, it turned out that explicit cache flushing using the clflushopt instruction per

Re: [dm-devel] [PATCH] dm-writecache: improve performance on Optane-based persistent memory

2020-04-29 Thread Heinz Mauelshagen
On 4/29/20 6:30 PM, Mikulas Patocka wrote: Hi This is the clflushopt patch for the next merge window. Mikulas From: Mikulas Patocka When testing the dm-writecache target on a real Optane-based persistent memory, it turned out that explicit cache flushing using the clflushopt instruction per

[dm-devel] [PATCH] dm-writecache: improve performance on Optane-based persistent memory

2020-04-29 Thread Mikulas Patocka
Hi This is the clflushopt patch for the next merge window. Mikulas From: Mikulas Patocka When testing the dm-writecache target on a real Optane-based persistent memory, it turned out that explicit cache flushing using the clflushopt instruction performs better than non-temporal stores for blo