Re: arm64 + ARM64_64K_PAGES=y

2018-11-12 Thread Grygorii Strashko
On 11/12/18 8:27 AM, Andre Przywara wrote: > On Fri, 9 Nov 2018 13:15:47 -0600 > Grygorii Strashko wrote: > > Hi, > >> On 11/8/18 12:14 PM, Grygorii Strashko wrote: >>> >>> >>> On 11/8/18 6:00 AM, Sebastian Andrzej Siewior wrote: On 2018-11-06 15:34:55 [-0600], Grygorii Strashko wrote: >

Re: arm64 + ARM64_64K_PAGES=y

2018-11-12 Thread Andre Przywara
On Fri, 9 Nov 2018 13:15:47 -0600 Grygorii Strashko wrote: Hi, > On 11/8/18 12:14 PM, Grygorii Strashko wrote: > > > > > > On 11/8/18 6:00 AM, Sebastian Andrzej Siewior wrote: > >> On 2018-11-06 15:34:55 [-0600], Grygorii Strashko wrote: > >>> Hi All, > >> Hi, > >> > >>> Do anybody tri

Re: arm64 + ARM64_64K_PAGES=y

2018-11-09 Thread Grygorii Strashko
On 11/8/18 12:14 PM, Grygorii Strashko wrote: > > > On 11/8/18 6:00 AM, Sebastian Andrzej Siewior wrote: >> On 2018-11-06 15:34:55 [-0600], Grygorii Strashko wrote: >>> Hi All, >> Hi, >> >>> Do anybody tried to use ARM64 RT with 76K pages enabled? >> >> 75 would be an off by one but this :) >

Re: arm64 + ARM64_64K_PAGES=y

2018-11-08 Thread Anshuman Khandual
On 11/07/2018 03:04 AM, Grygorii Strashko wrote: > Hi All, > > Do anybody tried to use ARM64 RT with 76K pages enabled? > > My attempt shows that enabling  CONFIG_ARM64_64K_PAGES=y increases latencies > by ~30% Depends on what the workload is actually doing. 64K pages should help if the mapp

Re: arm64 + ARM64_64K_PAGES=y

2018-11-08 Thread Grygorii Strashko
On 11/8/18 6:00 AM, Sebastian Andrzej Siewior wrote: On 2018-11-06 15:34:55 [-0600], Grygorii Strashko wrote: Hi All, Hi, Do anybody tried to use ARM64 RT with 76K pages enabled? 75 would be an off by one but this :) Ops 8-). at least subj is correct. My attempt shows that enabling

Re: arm64 + ARM64_64K_PAGES=y

2018-11-08 Thread Sebastian Andrzej Siewior
On 2018-11-06 15:34:55 [-0600], Grygorii Strashko wrote: > Hi All, Hi, > Do anybody tried to use ARM64 RT with 76K pages enabled? 75 would be an off by one but this :) > My attempt shows that enabling CONFIG_ARM64_64K_PAGES=y increases latencies > by ~30% > > cyclictest -n -m -Sp98 -q -D2m wi

arm64 + ARM64_64K_PAGES=y

2018-11-06 Thread Grygorii Strashko
Hi All, Do anybody tried to use ARM64 RT with 76K pages enabled? My attempt shows that enabling CONFIG_ARM64_64K_PAGES=y increases latencies by ~30% cyclictest -n -m -Sp98 -q -D2m with CONFIG_ARM64_64K_PAGES=y T: 0 ( 772) P:98 I:1000 C: 12 Min: 7 Act: 13 Avg: 10 Max: 8