On 2022/11/14 22:19, Anshuman Khandual wrote:
>
>
> On 11/14/22 14:16, Yicong Yang wrote:
>> On 2022/11/14 11:29, Anshuman Khandual wrote:
>>>
>>> On 10/28/22 13:42, Yicong Yang wrote:
+static inline bool arch_tlbbatch_should_defer(struct mm_struct *mm)
+{
+ /*
+ * TLB
On 11/14/22 14:16, Yicong Yang wrote:
> On 2022/11/14 11:29, Anshuman Khandual wrote:
>>
>> On 10/28/22 13:42, Yicong Yang wrote:
>>> +static inline bool arch_tlbbatch_should_defer(struct mm_struct *mm)
>>> +{
>>> + /*
>>> +* TLB batched flush is proved to be beneficial for systems with
On 2022/11/14 11:29, Anshuman Khandual wrote:
>
>
> On 10/28/22 13:42, Yicong Yang wrote:
>> +static inline bool arch_tlbbatch_should_defer(struct mm_struct *mm)
>> +{
>> +/*
>> + * TLB batched flush is proved to be beneficial for systems with large
>> + * number of CPUs, especially
在 2022/10/28 下午4:12, Yicong Yang 写道:
From: Barry Song
on x86, batched and deferred tlb shootdown has lead to 90%
performance increase on tlb shootdown. on arm64, HW can do
tlb shootdown without software IPI. But sync tlbi is still
quite expensive.
Even running a simplest program which
On 10/28/22 13:42, Yicong Yang wrote:
> +static inline bool arch_tlbbatch_should_defer(struct mm_struct *mm)
> +{
> + /*
> + * TLB batched flush is proved to be beneficial for systems with large
> + * number of CPUs, especially system with more than 8 CPUs. TLB shutdown
> + *
From: Barry Song
on x86, batched and deferred tlb shootdown has lead to 90%
performance increase on tlb shootdown. on arm64, HW can do
tlb shootdown without software IPI. But sync tlbi is still
quite expensive.
Even running a simplest program which requires swapout can
prove this is true,
