[libvirt-users] [libvirt] virDomainMemoryStats call
- First Post
- Replies
- Stats
-
Go to
- ----- 2024 -----
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2023 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2022 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2021 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2020 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2019 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2018 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2017 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2016 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2015 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2014 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2013 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2012 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2011 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
- ----- 2010 -----
- December
- November
- October
- September
- August
- July
- June
- May
- April
- March
- February
- January
Hi,
Is the array mstats returned by virDomainMemoryStats call cummulative or snapshot
of the counter at that particular time ? I was of the opinion that is cummulative like the
/proc counters but this counter seems to go backwards ie next snapshot value is less than
the current one which makes me think these are snapshot values . I'm using RHEL 6.3
libvirt version 0.9.10.
Regards,
Navin
Thursday, 9 August
Thu, 9 Aug
12:41 p.m.
New subject: [libvirt-users] [libvirt] virDomainMemoryStats call
On 08/09/2012 11:13 AM, Parakkal, Navin S wrote:
Hi,
Is the array mstats returned by virDomainMemoryStats call cummulative or snapshot
of the counter at that particular time ? I was of the opinion that is cummulative like the
/proc counters but this counter seems to go backwards ie next snapshot value is less than
the current one which makes me think these are snapshot values . I'm using RHEL 6.3
libvirt version 0.9.10.
For qemu, virDomainMemoryStats parses the output of the qemu
'query-balloon' monitor command; I'd have to check the qemu source code
to see if these stats are cumulative, but that's what I'd expect. If
they are not, then libvirt has a bug for not accumulating the stats
locally, because I think the libvirt API has to be cumulative. If
reading the stats resets them to 0 (ie. stats are a self-resetting
snapshot), and you have more than one client both trying to read stats,
then the stats will read short.
--
Eric Blake eblake(a)redhat.com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
4488
days inactive
4488
days old
1 comments
2 participants
tags (0)
participants (2)
-
Eric Blake -
Parakkal, Navin S