Re: [PATCH v3] qemu: add the print of page size in cmd domjobinfo

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On Thu, Oct 12, 2017 at 05:10:43PM +0200, Jiri Denemark wrote:
>On Mon, Oct 09, 2017 at 10:00:03 +0800, Chao Fan wrote:
>> The command "info migrate" of qemu outputs the dirty-pages-rate during
>> migration, but page size is different in different architectures. So
>> page size should be output to calculate dirty pages in bytes.
>> 
>> Page size is already implemented with commit
>> 030ce1f8612215fcbe9d353dfeaeb2937f8e3f94 in qemu.
>> Now Implement the counter-part in libvirt.
>> 
>> Signed-off-by: Chao Fan <fanc.fnst@xxxxxxxxxxxxxx>
>> Signed-off-by: Li Zhijian <lizhijian@xxxxxxxxxxxxxx>
>> ---
>> v2 -> v3:
>>   Follow the suggestion of John Ferlan:
>>   1. Improve a judgment logic when failing to get page size.
>> 
>> v1 -> v2:
>>   Follow the suggestion of John Ferlan:
>>   1. Drop the fix for unrelated coding style problem.
>>   2. Fix typo.
>>   3. Improve a judgment logic when failing to get page size.
>> ---
>>  include/libvirt/libvirt-domain.h | 7 +++++++
>>  src/qemu/qemu_domain.c           | 6 ++++++
>>  src/qemu/qemu_migration_cookie.c | 7 +++++++
>>  src/qemu/qemu_monitor.h          | 1 +
>>  src/qemu/qemu_monitor_json.c     | 2 ++
>>  tools/virsh-domain.c             | 8 ++++++++
>>  6 files changed, 31 insertions(+)
>> 
>> diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
>> index 030a62c43..1f4ddcf66 100644
>> --- a/include/libvirt/libvirt-domain.h
>> +++ b/include/libvirt/libvirt-domain.h
>> @@ -3336,6 +3336,13 @@ typedef enum {
>>  # define VIR_DOMAIN_JOB_MEMORY_DIRTY_RATE        "memory_dirty_rate"
>>  
>>  /**
>> + * VIR_DOMAIN_JOB_MEMORY_PAGE_SIZE:
>> + *
>> + * virDomainGetJobStats field: page size of the memory in this domain
>> + */
>> +# define VIR_DOMAIN_JOB_MEMORY_PAGE_SIZE        "page_size"
Hi Jirka,

Thanks for your reply.

>
>The parameter should be called "memory_page_size" and its documentation
>could be a bit more verbose., for example:

OK, thanks for your suggestion.
>
>virDomainGetJobStats field: memory page size in bytes, as
>VIR_TYPED_PARAM_ULLONG. If present, this parameter can be used to
>convert other page based statistics, such as
>VIR_DOMAIN_JOB_MEMORY_DIRTY_RATE or VIR_DOMAIN_JOB_COMPRESSION_PAGES
>to bytes.
>
>ACK and pushed with this small change.

The new version is on the way.

Thanks,
Chao Fan
>
>Thanks,
>
>Jirka
>
>


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