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scylladb/utils
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Michał Chojnowski 4563cbe595 logalloc: prevent false positives in reclaim_timer 
reclaim_timer uses a coarse clock, but does not account for
the measurement error introduced by that -- it can falsely
report reclaims as stalls, even if they are shorter by a full
coarse clock tick from the requested threshold
(blocked-reactor-notify-ms).

Notably, if the stall threshold happens to be smaller or equal to coarse
clock resolution, Scylla's log gets spammed with false stall reports.
The resolution of coarse clocks in Linux is 1/CONFIG_HZ. This is
typically equal to 1 ms or 4 ms, and stall thresholds of this order
can occur in practice.

Eliminate false positives by requiring the measured reclaim duration to
be at least 1 clock tick longer than the configured threshold for it to
be considered a stall.

Fixes #10981

Closes #11680
2022-10-02 13:41:40 +03:00
..
abi
utils: add abi/eh_ia64.hh
2022-07-04 19:27:06 +02:00
arch/powerpc/crc32-vpmsum
…
gz
checksum_utils_test: supply valid input to crc32_combine()
2022-06-21 11:58:13 +03:00
lsa
utils/chunked_managed_vector: Fix sigsegv during reserve()
2022-04-12 16:37:11 +03:00
allocation_strategy.hh
code: Convert nothrow construction assertions into concepts
2022-02-24 19:44:50 +03:00
amortized_reserve.hh
db: range_tombstone_list: Avoid quadratic behavior when applying
2022-08-05 20:34:07 +03:00
anchorless_list.hh
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2022-01-18 12:15:18 +01:00
array-search.cc
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2022-01-18 12:15:18 +01:00
array-search.hh
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2022-01-18 12:15:18 +01:00
ascii.cc
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2022-01-18 12:15:18 +01:00
ascii.hh
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2022-01-18 12:15:18 +01:00
atomic_vector.hh
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2022-01-18 12:15:18 +01:00
base64.cc
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2022-01-18 12:15:18 +01:00
base64.hh
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2022-01-18 12:15:18 +01:00
big_decimal.cc
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2022-01-18 12:15:18 +01:00
big_decimal.hh
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2022-01-18 12:15:18 +01:00
bit_cast.hh
utils: bit_cast: require TriviallyCopyable To
2022-08-08 08:02:27 +03:00
bloom_calculations.cc
treewide: remove empty comments in top-of-files
2022-05-13 07:11:58 +02:00
bloom_calculations.hh
cql: validate bloom_filter_fp_chance up-front
2022-09-20 06:18:51 +03:00
bloom_filter.cc
treewide: remove empty comments in top-of-files
2022-05-13 07:11:58 +02:00
bloom_filter.hh
treewide: remove empty comments in top-of-files
2022-05-13 07:11:58 +02:00
bounded_stats_deque.hh
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2022-01-18 12:15:18 +01:00
bptree.hh
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2022-01-18 12:15:18 +01:00
buffer_input_stream.cc
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2022-01-18 12:15:18 +01:00
buffer_input_stream.hh
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2022-01-18 12:15:18 +01:00
build_id.cc
build_id: cache the value
2022-06-02 11:21:05 +03:00
build_id.hh
treewide: extent copyright statements to present day
2021-06-06 19:18:49 +03:00
cached_file.hh
utils: cached_file: Fix alloc-dealloc mismatch during eviction
2022-02-23 18:38:05 +01:00
chunked_vector.hh
util/chunked_vector: more complete comment
2022-06-23 10:33:35 +03:00
class_registrator.hh
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2022-01-18 12:15:18 +01:00
clmul.hh
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2022-01-18 12:15:18 +01:00
coarse_steady_clock.hh
logalloc: prevent false positives in reclaim_timer
2022-10-02 13:41:40 +03:00
collection-concepts.hh
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2022-01-18 12:15:18 +01:00
compact-radix-tree.hh
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2022-01-18 12:15:18 +01:00
config_file_impl.hh
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2022-01-18 12:15:18 +01:00
config_file.cc
utils: config_file: fix handling of workdir,W in the YAML file
2022-09-09 18:05:46 +02:00
config_file.hh
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2022-01-18 12:15:18 +01:00
coroutine.hh
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2022-01-18 12:15:18 +01:00
crc.hh
code: Convert is_integral assertions to concepts
2022-02-24 19:44:29 +03:00
cross-shard-barrier.hh
cross-shard-barrier: Capture shared barrier in complete
2022-09-16 08:21:02 +03:00
data_input.hh
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2022-01-18 12:15:18 +01:00
date.h
…
directories.cc
lister: move to utils
2022-02-28 12:36:03 +02:00
directories.hh
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2022-01-18 12:15:18 +01:00
disk-error-handler.cc
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2022-01-18 12:15:18 +01:00
disk-error-handler.hh
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div_ceil.hh
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2022-01-18 12:15:18 +01:00
double-decker.hh
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2022-01-18 12:15:18 +01:00
dynamic_bitset.cc
utils: dynamic_bitset: mark functions noexcept
2022-07-27 13:32:36 +03:00
dynamic_bitset.hh
utils: dynamic_bitset: mark functions noexcept
2022-07-27 13:32:36 +03:00
entangled.hh
compile: Fix headers so that *-headers targets compile cleanly.
2022-03-25 16:19:26 +02:00
enum_option.hh
config: fix printing of experimental feature list
2022-07-11 09:17:30 +02:00
error_injection.cc
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2022-01-18 12:15:18 +01:00
error_injection.hh
treewide: use system-#include (angle brackets) for seastar
2022-04-26 14:46:42 +03:00
estimated_histogram.hh
estimated_histogram: add missing getter method
2022-07-26 15:59:33 +03:00
exception_container.hh
exception_container: switch impl to std::shared_ptr and make copyable
2022-02-22 16:08:52 +01:00
exceptions.cc
utils/exceptions.cc: don't rethrow in is_timeout_exception
2022-07-05 16:41:09 +02:00
exceptions.hh
utils: add make_nested_exception_ptr
2022-07-05 16:41:09 +02:00
exponential_backoff_retry.hh
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2022-01-18 12:15:18 +01:00
extremum_tracking.hh
min_max_tracker: mark functions noexcept
2022-07-27 13:17:27 +03:00
fb_utilities.hh
treewide: remove empty comments in top-of-files
2022-05-13 07:11:58 +02:00
file_lock.cc
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2022-01-18 12:15:18 +01:00
file_lock.hh
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2022-01-18 12:15:18 +01:00
flush_queue.hh
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2022-01-18 12:15:18 +01:00
fmt-compat.hh
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2022-01-18 12:15:18 +01:00
fragment_range.hh
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2022-01-18 12:15:18 +01:00
fragmented_temporary_buffer.hh
utils: fragmented_temporary_buffer: add release()
2022-05-07 13:04:16 +02:00
generation-number.cc
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2022-01-18 12:15:18 +01:00
generation-number.hh
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2022-01-18 12:15:18 +01:00
hash.hh
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2022-01-18 12:15:18 +01:00
histogram_metrics_helper.cc
histogram_metrics_helper.hh: Add to_metrics_summary function
2022-07-27 16:58:52 +03:00
histogram_metrics_helper.hh
histogram_metrics_helper.hh: Add to_metrics_summary function
2022-07-27 16:58:52 +03:00
histogram.hh
Unified histogram, estimated_histogram, rates, and summaries
2022-07-27 16:58:25 +03:00
human_readable.cc
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2022-01-18 12:15:18 +01:00
human_readable.hh
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2022-01-18 12:15:18 +01:00
i_filter.cc
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2022-01-18 12:15:18 +01:00
i_filter.hh
treewide: remove empty comments in top-of-files
2022-05-13 07:11:58 +02:00
immutable-collection.hh
compile: Fix headers so that *-headers targets compile cleanly.
2022-03-25 16:19:26 +02:00
in.hh
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2022-01-18 12:15:18 +01:00
input_stream.hh
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2022-01-18 12:15:18 +01:00
int_range.hh
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2022-01-18 12:15:18 +01:00
intrusive_btree.hh
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2022-01-18 12:15:18 +01:00
intrusive-array.hh
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2022-01-18 12:15:18 +01:00
large_bitset.cc
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2022-01-18 12:15:18 +01:00
large_bitset.hh
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2022-01-18 12:15:18 +01:00
latency.hh
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2022-01-18 12:15:18 +01:00
like_matcher.cc
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2022-01-18 12:15:18 +01:00
like_matcher.hh
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2022-01-18 12:15:18 +01:00
limiting_data_source.cc
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2022-01-18 12:15:18 +01:00
limiting_data_source.hh
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2022-01-18 12:15:18 +01:00
linearizing_input_stream.hh
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2022-01-18 12:15:18 +01:00
lister.cc
lister: do not require get after close to fail
2022-02-28 12:59:08 +02:00
lister.hh
directory_lister: drop abort method
2022-02-28 12:52:47 +02:00
loading_cache.hh
authorization_cache: Make permissions cache and authorized prepared statements cache live updateable
2022-06-28 19:58:06 -03:00
loading_shared_values.hh
loading_cache: Make invalidation take immediate effect
2022-03-09 16:13:07 +02:00
log_heap.hh
utils: log_heap: mark functions noexcept
2022-07-27 13:43:17 +03:00
logalloc.cc
logalloc: prevent false positives in reclaim_timer
2022-10-02 13:41:40 +03:00
logalloc.hh
utils/logalloc: add use_standard_allocator_segment_pool_backend()
2022-09-16 13:02:40 +03:00
lru.hh
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2022-01-18 12:15:18 +01:00
managed_bytes.cc
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2022-01-18 12:15:18 +01:00
managed_bytes.hh
bytes_ostream: base on managed_bytes
2022-07-12 00:23:29 +03:00
managed_ref.hh
code: Convert nothrow construction assertions into concepts
2022-02-24 19:44:50 +03:00
managed_vector.hh
code: Convert nothrow construction assertions into concepts
2022-02-24 19:44:50 +03:00
maybe_yield.hh
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2022-01-18 12:15:18 +01:00
memory_data_sink.hh
utils: memory_data_sink: Override mandatory buffer_size()
2022-07-14 11:56:20 +03:00
multiprecision_int.cc
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2022-01-18 12:15:18 +01:00
multiprecision_int.hh
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2022-01-18 12:15:18 +01:00
murmur_hash.cc
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2022-01-18 12:15:18 +01:00
murmur_hash.hh
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2022-01-18 12:15:18 +01:00
mutable_view.hh
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2022-01-18 12:15:18 +01:00
neat-object-id.hh
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2022-01-18 12:15:18 +01:00
observable.hh
updateable_value: Support dummy observing
2022-07-06 08:17:08 +03:00
overloaded_functor.hh
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2022-01-18 12:15:18 +01:00
phased_barrier.hh
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2022-01-18 12:15:18 +01:00
preempt.hh
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2022-01-18 12:15:18 +01:00
ranges.hh
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2022-01-18 12:15:18 +01:00
rate_limiter.cc
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2022-01-18 12:15:18 +01:00
rate_limiter.hh
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2022-01-18 12:15:18 +01:00
result_combinators.hh
result_combinators: add result_wrap_unpack
2022-02-22 16:25:21 +01:00
result_loop.hh
utils: result_loop: remove invalid and incorrect constraint
2022-04-18 12:27:18 +03:00
result_try.hh
utils/result_try: prevent exceptions from being caught multiple times
2022-03-15 11:42:42 +02:00
result.hh
utils/result.hh: add missing header includes for boost.outcome
2022-03-16 12:28:47 +03:00
reusable_buffer.hh
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2022-01-18 12:15:18 +01:00
rjson.cc
utils/rjson.cc: ignore buggy GCC warning
2022-03-02 19:10:58 +02:00
rjson.hh
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2022-01-18 12:15:18 +01:00
runtime.cc
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2022-01-18 12:15:18 +01:00
runtime.hh
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2022-01-18 12:15:18 +01:00
sequenced_set.hh
utils: sequenced_set: expose set and contains method
2022-08-08 17:31:00 +03:00
serialization.hh
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2022-01-18 12:15:18 +01:00
serialized_action.hh
serialized_action: Allow being observer for updateable_value
2022-07-06 08:17:08 +03:00
small_vector.hh
code: Convert nothrow construction assertions into concepts
2022-02-24 19:44:50 +03:00
stall_free.hh
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2022-01-18 12:15:18 +01:00
streaming_histogram.hh
treewide: remove empty comments in top-of-files
2022-05-13 07:11:58 +02:00
top_k.hh
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2022-01-18 12:15:18 +01:00
updateable_value.cc
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2022-01-18 12:15:18 +01:00
updateable_value.hh
updateable_value: Update comment about cross-shard copying
2022-09-14 12:35:56 +02:00
utf8.cc
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2022-01-18 12:15:18 +01:00
utf8.hh
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2022-01-18 12:15:18 +01:00
UUID_gen.cc
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2022-01-18 12:15:18 +01:00
UUID_gen.hh
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2022-01-18 12:15:18 +01:00
uuid.cc
utils: uuid: mark functions noexcept
2022-08-08 08:02:27 +03:00
UUID.hh
query-request, everywhere: define and use query_id as a strong type
2022-08-08 08:13:28 +03:00
variant_element.hh
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2022-01-18 12:15:18 +01:00
vle.hh
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2022-01-18 12:15:18 +01:00