From: Shailabh Nagar <[email protected]>
Cc: Jes Sorensen <[email protected]>,
Peter Chubb <[email protected]>,
Erich Focht <[email protected]>,
Levent Serinol <[email protected]>,
Jay Lan <[email protected]>
Here are the delay accounting patches again. The patches are against
2.6.17-rc3
Andrew, could you please consider them for inclusion in -mm?
The previous posting of these patches is at
http://www.ussg.iu.edu/hypermail/linux/kernel/0604.2/1831.html
Here's the list of the stakeholders identified by Andrew and a summary of
status of their comments.
1. CSA accounting/PAGG/JOB: Jay Lan <[email protected]>
Raised several points
http://www.ussg.iu.edu/hypermail/linux/kernel/0604.3/1036.html
all of which have been addressed in this set of patches.
2. per-process IO statistics: Levent Serinol <[email protected]>
No reponse.
we have ascertained that its needs are a subset of CSA.
3. per-cpu time statistics: Erich Focht <[email protected]>
No response.
we have ascertained that its needs can be met by taskstats
interface whenever these statistics are submitted for inclusion.
4. Microstate accounting: Peter Chubb <[email protected]>
Mentioned overlap of patches with delay accounting
http://www.uwsg.indiana.edu/hypermail/linux/kernel/0603.3/2286.html
and also that a /proc interface was preferable due to convenience.
Our position is that the netlink interface is a superset of /proc due to
former's ability to supply exit-time data.
5. ELSA: Guillaume Thouvenin <[email protected]>
Confirmed that ELSA is not a direct user of a new kernel statistics
interface since it is a consumer of CSA or BSD accounting's statistics.
6. pnotify: Jes Sorensen <[email protected]>
(taken over pnotify from Erik Jacobson)
Informed over private email that pnotify replacement is
being worked on.
we have ascertained that pnotify (or its replacemenent) will not be
concerned with exporting data to userspace or collecting any stats.
Thats left to the kernel module that uses pnotify to get
notifications. CSA is one expected user of pnotify.
Hence CSA's concerns are the only ones relevant to pnotify as well.
7. Scalable statistics counters with /proc reporting:
Ravikiran G Thirumalai, Dipankar Sarma <[email protected]>
Confirmed these counters aren't relevant to this discussion.
Balbir
Series
delayacct-setup.patch
delayacct-blkio-swapin.patch
delayacct-schedstats.patch
genetlink-utils.patch
taskstats-setup.patch
delayacct-taskstats.patch
delayacct-doc.patch
delayacct-procfs.patch
--
<--- Balbir
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