David Goldblatt
b25ee5d88e
HPA: Add purge stats.
2021-02-04 20:58:31 -08:00
David Goldblatt
746ea3de6f
HPA stats: Allow some derived stats.
...
However, we put them in their own struct, to avoid the messiness that the arena
has (mixing derived and non-derived stats in the arena_stats_t).
2021-02-04 20:58:31 -08:00
David Goldblatt
30b9e8162b
HPA: Generalize purging.
...
Previously, we would purge a hugepage only when it's completely empty. With
this change, we can purge even when only partially empty. Although the
heuristic here is still fairly primitive, this infrastructure can scale to
become more advanced.
2021-02-04 20:58:31 -08:00
David Goldblatt
70692cfb13
hpdata: Add state changing helpers.
...
We're about to allow hugepage subextent purging; get as much of our metadata
handling ready as possible.
2021-02-04 20:58:31 -08:00
David Goldblatt
2ae966222f
hpdata: track per-page dirty state.
2021-02-04 20:58:31 -08:00
David Goldblatt
ff4086aa6b
hpdata: count active pages instead of free ones.
...
This will be more consistent with later naming choices.
2021-02-04 20:58:31 -08:00
David Goldblatt
3ed0b4e8a3
HPA: Add an nevictions counter.
...
I.e. the number of times we've purged a hugepage-sized region.
2020-12-07 06:21:08 -08:00
David Goldblatt
f9299ca572
HPA: Use psset fit/insert/remove.
...
This will let us remove alloc_new and alloc_reuse functions from the psset.
2020-12-07 06:21:08 -08:00
David Goldblatt
5228d869ee
psset: Use fit/insert/remove as basis functions.
...
All other functionality can be implemented in terms of these; doing so (while
retaining the same API) will be convenient for subsequent refactors.
2020-12-07 06:21:08 -08:00
David Goldblatt
ca30b5db2b
Introduce hpdata_t.
...
Using an edata_t both for hugepages and the allocations within those hugepages
was convenient at first, but has outlived its usefulness. Representing
hugepages explicitly, with their own data structure, will make future
development easier.
2020-12-07 06:21:08 -08:00
David Goldblatt
43af63fff4
HPA: Manage whole hugepages at a time.
...
This redesigns the HPA implementation to allow us to manage hugepages all at
once, locally, without relying on a global fallback.
2020-12-07 06:21:08 -08:00
David Goldblatt
c1b2a77933
psset: Move in stats.
...
A later change will benefit from having these functions pulled into a
psset-module set of functions.
2020-12-07 06:21:08 -08:00
David Goldblatt
4ca3d91e96
Rename geom_grow -> exp_grow.
...
This was promised in the review of the introduction of geom_grow, but would have
been painful to do there because of the series that introduced it. Now that
those are comitted, renaming is easier.
2020-11-13 13:42:33 -08:00
David Goldblatt
589638182a
Use the edata_cache_small_t in the HPA.
2020-11-05 12:34:43 -08:00
David Goldblatt
6599651aee
PA: Use an SEC in fron of the HPA shard.
2020-10-23 11:14:34 -07:00
David Goldblatt
1964b08394
HPA: Add stats for the hpa_shard.
2020-10-23 11:14:34 -07:00
David Goldblatt
534504d4a7
HPA: add size-exclusion functionality.
...
I.e. only allowing allocations under or over certain sizes.
2020-10-23 11:14:34 -07:00
David Goldblatt
1c7da33317
HPA: Tie components into a PAI implementation.
2020-10-23 11:14:34 -07:00
