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1849 Commits

Author SHA1 Message Date
David Goldblatt
e77f47a85a Move arena decay getters to PA. 2020-04-10 13:12:47 -07:00
David Goldblatt
f77cec311e Decay: Take current time as an argument. 
This better facilitates testing.
 2020-04-10 13:12:47 -07:00
David Goldblatt
d1d7e1076b Decay: move in some background_thread accesses. 2020-04-10 13:12:47 -07:00
David Goldblatt
8f2193dc8d Decay: Move in arena decay functions. 2020-04-10 13:12:47 -07:00
David Goldblatt
4d090d23f1 Decay: Introduce a stub .c file. 2020-04-10 13:12:47 -07:00
David Goldblatt
7b62885476 Introduce decay module and put decay objects in PA 2020-04-10 13:12:47 -07:00
David Goldblatt
3192d6b77d Extents: Have extent_dalloc_gap take ehooks. 
We're almost to the point where the extent code doesn't know about arenas at
all.  In that world, we shouldn't pull them out of the arena.
 2020-04-10 13:12:47 -07:00
David Goldblatt
22a0a7b93a Move arena_decay_extent to extent module. 2020-04-10 13:12:47 -07:00
David Goldblatt
70d12ffa05 PA: Move mapped into pa stats. 2020-04-10 13:12:47 -07:00
David Goldblatt
ce8c0d6c09 PA: Move in arena extent_sn counter. 
Just another step towards making PA self-contained.
 2020-04-10 13:12:47 -07:00
David Goldblatt
1ada4aef84 PA: Get rid of arena_ind_get calls. 
This is another step on the path towards breaking the extent reliance on the
arena module.
 2020-04-10 13:12:47 -07:00
David Goldblatt
1ad368c8b7 PA: Move in decay stats. 2020-04-10 13:12:47 -07:00
David Goldblatt
356aaa7dc6 Introduce lockedint module. 
This pulls out the various abstractions where some stats counter is sometimes an
atomic, sometimes a plain variable, sometimes always protected by a lock,
sometimes protected by reads but not writes, etc.  With this change, these cases
are treated consistently, and access patterns tagged.

In the process, we fix a few missed-update bugs (where one caller assumes
"protected-by-a-lock" semantics and another does not).
 2020-04-10 13:12:47 -07:00
David Goldblatt
acd0bf6a26 PA: move in ecache_grow. 2020-04-10 13:12:47 -07:00
David Goldblatt
32cb7c2f0b PA: Add a stats type. 2020-04-10 13:12:47 -07:00
David Goldblatt
688fb3eb89 PA: Move in the arena edata_cache. 2020-04-10 13:12:47 -07:00
David Goldblatt
8433ad84ea PA: move in shard initialization. 2020-04-10 13:12:47 -07:00
David Goldblatt
a24faed569 PA: Move in the ecache_t objects. 2020-04-10 13:12:47 -07:00
David Goldblatt
585f925055 Move cache index randomization out of extent. 
This is logically at a higher level of the stack; extent should just allocate
things at the page-level; it shouldn't care exactly why the callers wants a
given number of pages.
 2020-04-10 13:12:47 -07:00
David Goldblatt
12be9f5727 Add a stub PA module -- a page allocator. 2020-04-10 13:12:47 -07:00
Yinan Zhang
c4e9ea8cc6 Get rid of locks in prof recent test 2020-04-07 17:22:24 -07:00
Yinan Zhang
2deabac079 Get rid of custom iterator for last-N records 2020-04-07 17:22:24 -07:00
Yinan Zhang
a5ddfa7d91 Use ql for prof last-N list 2020-04-07 17:22:24 -07:00
Yinan Zhang
f9aad7a49b Add piping API to buffered writer 2020-04-01 09:41:20 -07:00
Yinan Zhang
09cd79495f Encapsulate buffer allocation failure in buffered writer 2020-04-01 09:41:20 -07:00
Yinan Zhang
a166c20818 Make prof_tctx_t pointer a true prof atomic fence 2020-03-31 17:43:42 -07:00
David T. Goldblatt
d936b46d3a Add malloc_conf_2_conf_harder 
This comes in handy when you're just a user of a canary system who wants to
change settings set by the configuration system itself.
 2020-03-31 06:25:08 -07:00
Yinan Zhang
2256ef8961 Add option to fetch system thread name on each prof sample 2020-03-24 21:39:57 -07:00
Yinan Zhang
b30a5c2f90 Reorganize cpp APIs and suppress unused function warnings 2020-03-13 12:16:09 -07:00
David Goldblatt
2e5899c129 Stats: Fix tcache_bytes reporting. 
Previously, large allocations in tcaches would have their sizes reduced during
stats estimation.  Added a test, which fails before this change but passes now.

This fixes a bug introduced in 593484661261c20f75557279931eb2d9ca165185, which
was itself fixing a bug introduced in 9c0549007dcb64f4ff35d37390a9a6a8d3cea880.
 2020-03-13 07:53:34 -07:00
Yinan Zhang
a5780598b3 Remove thread_event_rollback() 2020-03-12 13:55:00 -07:00
Yinan Zhang
ba783b3a0f Remove prof -> thread_event dependency 2020-03-12 13:55:00 -07:00
Yinan Zhang
441d88d1c7 Rewrite profiling thread event 2020-03-12 13:55:00 -07:00
David Goldblatt
0dcd576600 Edata cache: atomic fetch-add -> load-store. 
The modifications to count are protected by a mutex; there's no need to use the
more costly version.
 2020-03-12 11:58:09 -07:00
David Goldblatt
99b1291d17 Edata cache: add edata_cache_small_t. 
This can be used to amortize the synchronization costs of edata_cache accesses.
 2020-03-12 11:58:09 -07:00
David Goldblatt
d701a085c2 Fast path: allow low-water mark changes. 
This lets us put more allocations on an "almost as fast" path after a flush.
This results in around a 4% reduction in malloc cycles in prod workloads
(corresponding to about a 0.1% reduction in overall cycles).
 2020-03-12 11:54:19 -07:00
David Goldblatt
397da03865 Cache bin: rewrite to track more state. 
With this, we track all of the empty, full, and low water states together.  This
simplifies a lot of the tracking logic, since we now don't need the
cache_bin_info_t for state queries (except for some debugging).
 2020-03-12 11:54:19 -07:00
David Goldblatt
fef0b1ffe4 Cache bin: Remove last internals accesses. 2020-03-12 11:54:19 -07:00
David Goldblatt
0a2fcfac01 Tcache: Hold cache bin allocation explicitly. 2020-03-12 11:54:19 -07:00
David Goldblatt
d498a4bb08 Cache bin: Add an emptiness assertion. 2020-03-12 11:54:19 -07:00
David Goldblatt
6a7aa46ef7 Cache bin: Add a debug method for init checking. 2020-03-12 11:54:19 -07:00
David Goldblatt
7f5ebd211c Cache bin: set low-water internally. 2020-03-12 11:54:19 -07:00
David Goldblatt
60113dfe3b Cache bin: Move in initialization code. 2020-03-12 11:54:19 -07:00
David Goldblatt
44529da852 Cache-bin: Make flush modifications internal 
I.e. the tcache code just calls a cache-bin function to finish flush (and move
pointers around, etc.).  It doesn't directly access the cache-bin's owned memory
any more.
 2020-03-12 11:54:19 -07:00
David Goldblatt
ff6acc6ed5 Cache bin: simplify names and argument ordering. 
We always start with the cache bin, then its info (if necessary).
 2020-03-12 11:54:19 -07:00
David Goldblatt
e1dcc557d6 Cache bin: Only take the relevant cache_bin_info_t 
Previously, we took an array of cache_bin_info_ts and an index, and dereferenced
ourselves.  But infos for other cache_bins aren't relevant to any particular
cache bin, so that should be the caller's job.
 2020-03-12 11:54:19 -07:00
David Goldblatt
1b00d808d7 cache_bin: Don't let arena see empty position. 2020-03-12 11:54:19 -07:00
David Goldblatt
d303f30796 cache_bin nflush -> n. 
We're going to use it on the fill pathway as well.
 2020-03-12 11:54:19 -07:00
David Goldblatt
74d36d78ef Cache bin: Make ncached_max a query on the info_t. 2020-03-12 11:54:19 -07:00
David Goldblatt
b66c0973cc cache_bin: Don't allow direct internals access. 2020-03-12 11:54:19 -07:00