Re: [PATCH V6] x86/mm: Tracking linear mapping split events

2021-03-08 Thread Johannes Weiner
On Fri, Mar 05, 2021 at 04:57:15PM -0800, Andrew Morton wrote: > On Thu, 18 Feb 2021 15:57:44 -0800 Saravanan D wrote: > > > To help with debugging the sluggishness caused by TLB miss/reload, > > we introduce monotonic hugepage [direct mapped] split event counts since > > system state: SYSTEM_RUN

Re: [PATCH V6] x86/mm: Tracking linear mapping split events

2021-03-05 Thread Andrew Morton
On Thu, 18 Feb 2021 15:57:44 -0800 Saravanan D wrote: > To help with debugging the sluggishness caused by TLB miss/reload, > we introduce monotonic hugepage [direct mapped] split event counts since > system state: SYSTEM_RUNNING to be displayed as part of > /proc/vmstat in x86 servers > > ... > >

Re: [PATCH V6] x86/mm: Tracking linear mapping split events

2021-03-01 Thread Tejun Heo
Hello, On Thu, Feb 18, 2021 at 03:57:44PM -0800, Saravanan D wrote: > To help with debugging the sluggishness caused by TLB miss/reload, > we introduce monotonic hugepage [direct mapped] split event counts since > system state: SYSTEM_RUNNING to be displayed as part of > /proc/vmstat in x86 server

[PATCH V6] x86/mm: Tracking linear mapping split events

2021-02-18 Thread Saravanan D
To help with debugging the sluggishness caused by TLB miss/reload, we introduce monotonic hugepage [direct mapped] split event counts since system state: SYSTEM_RUNNING to be displayed as part of /proc/vmstat in x86 servers The lifetime split event information will be displayed at the bottom of /p

Re: [PATCH V6] x86/mm: Tracking linear mapping split events

2021-02-08 Thread Dave Hansen
On 1/28/21 3:34 PM, Saravanan D wrote: > > One of the many lasting sources of direct hugepage splits is kernel > tracing (kprobes, tracepoints). > > Note that the kernel's code segment [512 MB] points to the same > physical addresses that have been already mapped in the kernel's > direct mapping

Re: [PATCH V6] x86/mm: Tracking linear mapping split events

2021-02-08 Thread Saravanan D
Hi all, So far I have received two acks for V6 version of my patch > Acked-by: Tejun Heo > Acked-by: Johannes Weiner Are there any more objections ? Thanks, Saravanan D

Re: [PATCH V6] x86/mm: Tracking linear mapping split events

2021-01-29 Thread Johannes Weiner
On Thu, Jan 28, 2021 at 03:34:30PM -0800, Saravanan D wrote: > To help with debugging the sluggishness caused by TLB miss/reload, > we introduce monotonic hugepage [direct mapped] split event counts since > system state: SYSTEM_RUNNING to be displayed as part of > /proc/vmstat in x86 servers > > T

Re: [PATCH V6] x86/mm: Tracking linear mapping split events

2021-01-28 Thread Tejun Heo
On Thu, Jan 28, 2021 at 03:34:30PM -0800, Saravanan D wrote: > To help with debugging the sluggishness caused by TLB miss/reload, > we introduce monotonic hugepage [direct mapped] split event counts since > system state: SYSTEM_RUNNING to be displayed as part of > /proc/vmstat in x86 servers ... >