21 Commits

Author SHA1 Message Date
Benny Halevy
3feb759943 everywhere: use utils::chunked_vector for list of mutations
Currently, we use std::vector<*mutation> to keep
a list of mutations for processing.
This can lead to large allocation, e.g. when the vector
size is a function of the number of tables.

Use a chunked vector instead to prevent oversized allocations.

`perf-simple-query --smp 1` results obtained for fixed 400MHz frequency
and PGO disabled:

Before (read path):
```
enable-cache=1
Running test with config: {partitions=10000, concurrency=100, mode=read, query_single_key=no, counters=no}
Disabling auto compaction
Creating 10000 partitions...

89055.97 tps ( 66.1 allocs/op,   0.0 logallocs/op,  14.2 tasks/op,   39417 insns/op,   18003 cycles/op,        0 errors)
103372.72 tps ( 66.1 allocs/op,   0.0 logallocs/op,  14.2 tasks/op,   39380 insns/op,   17300 cycles/op,        0 errors)
98942.27 tps ( 66.1 allocs/op,   0.0 logallocs/op,  14.2 tasks/op,   39413 insns/op,   17336 cycles/op,        0 errors)
103752.93 tps ( 66.1 allocs/op,   0.0 logallocs/op,  14.2 tasks/op,   39407 insns/op,   17252 cycles/op,        0 errors)
102516.77 tps ( 66.1 allocs/op,   0.0 logallocs/op,  14.2 tasks/op,   39403 insns/op,   17288 cycles/op,        0 errors)
throughput:
	mean=   99528.13 standard-deviation=6155.71
	median= 102516.77 median-absolute-deviation=3844.59
	maximum=103752.93 minimum=89055.97
instructions_per_op:
	mean=   39403.99 standard-deviation=14.25
	median= 39406.75 median-absolute-deviation=9.30
	maximum=39416.63 minimum=39380.39
cpu_cycles_per_op:
	mean=   17435.81 standard-deviation=318.24
	median= 17300.40 median-absolute-deviation=147.59
	maximum=18002.53 minimum=17251.75
```

After (read path)
```
enable-cache=1
Running test with config: {partitions=10000, concurrency=100, mode=read, query_single_key=no, counters=no}
Disabling auto compaction
Creating 10000 partitions...
59755.04 tps ( 66.2 allocs/op,   0.0 logallocs/op,  14.2 tasks/op,   39466 insns/op,   22834 cycles/op,        0 errors)
71854.16 tps ( 66.1 allocs/op,   0.0 logallocs/op,  14.2 tasks/op,   39417 insns/op,   17883 cycles/op,        0 errors)
82149.45 tps ( 66.1 allocs/op,   0.0 logallocs/op,  14.2 tasks/op,   39411 insns/op,   17409 cycles/op,        0 errors)
49640.04 tps ( 66.1 allocs/op,   0.0 logallocs/op,  14.3 tasks/op,   39474 insns/op,   19975 cycles/op,        0 errors)
54963.22 tps ( 66.1 allocs/op,   0.0 logallocs/op,  14.3 tasks/op,   39474 insns/op,   18235 cycles/op,        0 errors)
throughput:
	mean=   63672.38 standard-deviation=13195.12
	median= 59755.04 median-absolute-deviation=8709.16
	maximum=82149.45 minimum=49640.04
instructions_per_op:
	mean=   39448.38 standard-deviation=31.60
	median= 39466.17 median-absolute-deviation=25.75
	maximum=39474.12 minimum=39411.42
cpu_cycles_per_op:
	mean=   19267.01 standard-deviation=2217.03
	median= 18234.80 median-absolute-deviation=1384.25
	maximum=22834.26 minimum=17408.67
```

`perf-simple-query --smp 1 --write` results obtained for fixed 400MHz frequency
and PGO disabled:

Before (write path):
```
enable-cache=1
Running test with config: {partitions=10000, concurrency=100, mode=write, query_single_key=no, counters=no}
Disabling auto compaction
63736.96 tps ( 59.4 allocs/op,  16.4 logallocs/op,  14.3 tasks/op,   49667 insns/op,   19924 cycles/op,        0 errors)
64109.41 tps ( 59.3 allocs/op,  16.0 logallocs/op,  14.3 tasks/op,   49992 insns/op,   20084 cycles/op,        0 errors)
56950.47 tps ( 59.3 allocs/op,  16.0 logallocs/op,  14.3 tasks/op,   50005 insns/op,   20501 cycles/op,        0 errors)
44858.42 tps ( 59.3 allocs/op,  16.0 logallocs/op,  14.3 tasks/op,   50014 insns/op,   21947 cycles/op,        0 errors)
28592.87 tps ( 59.3 allocs/op,  16.0 logallocs/op,  14.3 tasks/op,   50027 insns/op,   27659 cycles/op,        0 errors)
throughput:
	mean=   51649.63 standard-deviation=15059.74
	median= 56950.47 median-absolute-deviation=12087.33
	maximum=64109.41 minimum=28592.87
instructions_per_op:
	mean=   49941.18 standard-deviation=153.76
	median= 50005.24 median-absolute-deviation=73.01
	maximum=50027.07 minimum=49667.05
cpu_cycles_per_op:
	mean=   22023.01 standard-deviation=3249.92
	median= 20500.74 median-absolute-deviation=1938.76
	maximum=27658.75 minimum=19924.32
```

After (write path)
```
enable-cache=1
Running test with config: {partitions=10000, concurrency=100, mode=write, query_single_key=no, counters=no}
Disabling auto compaction
53395.93 tps ( 59.4 allocs/op,  16.5 logallocs/op,  14.3 tasks/op,   50326 insns/op,   21252 cycles/op,        0 errors)
46527.83 tps ( 59.3 allocs/op,  16.0 logallocs/op,  14.3 tasks/op,   50704 insns/op,   21555 cycles/op,        0 errors)
55846.30 tps ( 59.3 allocs/op,  16.0 logallocs/op,  14.3 tasks/op,   50731 insns/op,   21060 cycles/op,        0 errors)
55669.30 tps ( 59.3 allocs/op,  16.0 logallocs/op,  14.3 tasks/op,   50735 insns/op,   21521 cycles/op,        0 errors)
52130.17 tps ( 59.3 allocs/op,  16.0 logallocs/op,  14.3 tasks/op,   50757 insns/op,   21334 cycles/op,        0 errors)
throughput:
	mean=   52713.91 standard-deviation=3795.38
	median= 53395.93 median-absolute-deviation=2955.40
	maximum=55846.30 minimum=46527.83
instructions_per_op:
	mean=   50650.57 standard-deviation=182.46
	median= 50731.38 median-absolute-deviation=84.09
	maximum=50756.62 minimum=50325.87
cpu_cycles_per_op:
	mean=   21344.42 standard-deviation=202.86
	median= 21334.00 median-absolute-deviation=176.37
	maximum=21554.61 minimum=21060.24
```

Fixes #24815

Improvement for rare corner cases. No backport required

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>

Closes scylladb/scylladb#24919
2025-07-13 19:13:11 +03:00
Botond Dénes
674d41e3e6 readers/mutation_source: s/make_reader_v2/make_mutation_reader/ 2025-05-09 07:53:29 -04:00
Tomasz Grabiec
668094dc58 virtual_tables: memtable_filling_virtual_table: Propagate permit to execute()
So that population can access read's timeout and mark the permit as awaiting.
2025-04-09 20:21:51 +02:00
Botond Dénes
a0d8102a1f replica/memtable: s/make_flat_reader/make_mutation_reader/
Following the recent refactoring of removing "flat" and "v2" from reader
names, replacing all the fully qualified names with simply "mutation_reader".

Closes scylladb/scylladb#23346
2025-04-01 17:58:13 +03:00
Kefu Chai
7215d4bfe9 utils: do not include unused headers
these unused includes were identifier by clang-include-cleaner. after
auditing these source files, all of the reports have been confirmed.

please note, because quite a few source files relied on
`utils/to_string.hh` to pull in the specialization of
`fmt::formatter<std::optional<T>>`, after removing
`#include <fmt/std.h>` from `utils/to_string.hh`, we have to
include `fmt/std.h` directly.

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
2025-01-14 07:56:39 -05:00
Avi Kivity
f3eade2f62 treewide: relicense to ScyllaDB-Source-Available-1.0
Drop the AGPL license in favor of a source-available license.
See the blog post [1] for details.

[1] https://www.scylladb.com/2024/12/18/why-were-moving-to-a-source-available-license/
2024-12-18 17:45:13 +02:00
Kefu Chai
97587a2ea4 test/boost: do not include unused headers
these unused includes were identified by clangd. see
https://clangd.llvm.org/guides/include-cleaner#unused-include-warning
for more details on the "Unused include" warning.

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>

Closes scylladb/scylladb#17139
2024-02-06 13:22:16 +02:00
Pavel Emelyanov
eeee58def8 tests: Make use of make_memtable() helper
There's one in the utils that creates lw_shared_ptr<memtable> and
applies provided vector of mutations into it. Lots of other test cases
do literally the same by hand.

The make_memtable() assumes that the caller is sitting in the seastar
thread, and all the test cases that can benfit from it already are.

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
2023-11-02 19:28:35 +03:00
Pavel Emelyanov
66e43912d6 code: Switch to seastar API level 7
In that level no io_priority_class-es exist. Instead, all the IO happens
in the context of current sched-group. File API no longer accepts prio
class argument (and makes io_intent arg mandatory to impls).

So the change consists of
- removing all usage of io_priority_class
- patching file_impl's inheritants to updated API
- priority manager goes away altogether
- IO bandwidth update is performed on respective sched group
- tune-up scylla-gdb.py io_queues command

The first change is huge and was made semi-autimatically by:
- grep io_priority_class | default_priority_class
- remove all calls, found methods' args and class' fields

Patching file_impl-s is smaller, but also mechanical:
- replace io_priority_class& argument with io_intent* one
- pass intent to lower file (if applicatble)

Dropping the priority manager is:
- git-rm .cc and .hh
- sed out all the #include-s
- fix configure.py and cmakefile

The scylla-gdb.py update is a bit hairry -- it needs to use task queues
list for IO classes names and shares, but to detect it should it checks
for the "commitlog" group is present.

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>

Closes #13963
2023-06-06 13:29:16 +03:00
Avi Kivity
69a385fd9d Introduce schema/ module
Schema related files are moved there. This excludes schema files that
also interact with mutations, because the mutation module depends on
the schema. Those files will have to go into a separate module.

Closes #12858
2023-02-15 11:01:50 +02:00
Raphael S. Carvalho
3c5afb2d5c test: Enable Scylla test command line options for boost tests
We have enabled the command line options without changing a
single line of code, we only had to replace old include
with scylla_test_case.hh.

Next step is to add x-log-compaction-groups options, which will
determine the number of compaction groups to be used by all
instantiations of replica::table.

Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com>
2023-02-01 20:14:51 -03:00
Pavel Emelyanov
6075e01312 test/lib: Remove sstable_utils.hh from simple_schema.hh
The latter is pretty popular test/lib header that disseminates the
former one over whole lot of unit tests. The former, in turn, naturally
includes sstables.hh thus making tons of unrelated tests depend on
sstables class unused by them.

However, simple removal doesn't work, becase of local_shard_only bool
class definition in sstable_utils.hh used in simple_schema.hh. This
thing, in turn, is used in keys making helpers that don't belong to
sstable utils, so these are moved into simple_schema as well.

When done, this affects the mutation_source_test.hh, which needs the
local_shard_only bool class (and helps spreading the sstables.hh
throughout more unrelated tests) and a bunch of .cc test sources that
used sstable_utils.hh to indirectly include various headers of their
demand.

After patching, sstables.hh touches 2x times less tests. As a side
effect the sstables_manager.hh also becomes 2x times less dependent
on by tests.

Continuation of 9bdea110a6

Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>

Closes #12240
2022-12-08 15:37:33 +02:00
Michael Livshin
d137b32994 tests: ms.make_reader() -> ms.make_reader_v2()
Signed-off-by: Michael Livshin <michael.livshin@scylladb.com>
2022-05-31 23:42:34 +03:00
Mikołaj Sielużycki
a8cb7bf677 readers: Make result_collector use queue reader handle v2.
Transitively modifies streaming_virtual_table::as_mutation_source,
along with the tests.

Closes #10223
2022-03-15 17:02:28 +02:00
Michael Livshin
9bacce4359 memtable::make_flat_reader(): return flat_mutation_reader_v2
This is just a facade change.

Signed-off-by: Michael Livshin <michael.livshin@scylladb.com>
2022-02-28 17:11:54 +02:00
Avi Kivity
cbba80914d memtable: move to replica module and namespace
Memtables are a replica-side entity, and so are moved to the
replica module and namespace.

Memtables are also used outside the replica, in two places:
 - in some virtual tables; this is also in some way inside the replica,
   (virtual readers are installed at the replica level, not the
   cooordinator), so I don't consider it a layering violation
 - in many sstable unit tests, as a convenient way to create sstables
   with known input. This is a layering violation.

We could make memtables their own module, but I think this is wrong.
Memtables are deeply tied into replica memory management, and trying
to make them a low-level primitive (at a lower level than sstables) will
be difficult. Not least because memtables use sstables. Instead, we
should have a memtable-like thing that doesn't support merging and
doesn't have all other funky memtable stuff, and instead replace
the uses of memtables in sstable tests with some kind of
make_flat_mutation_reader_from_unsorted_mutations() that does
the sorting that is the reason for the use of memtables in tests (and
live with the layering violation meanwhile).

Test: unit (dev)

Closes #10120
2022-02-23 09:05:16 +02:00
Avi Kivity
fcb8d040e8 treewide: use Software Package Data Exchange (SPDX) license identifiers
Instead of lengthy blurbs, switch to single-line, machine-readable
standardized (https://spdx.dev) license identifiers. The Linux kernel
switched long ago, so there is strong precedent.

Three cases are handled: AGPL-only, Apache-only, and dual licensed.
For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0),
reasoning that our changes are extensive enough to apply our license.

The changes we applied mechanically with a script, except to
licenses/README.md.

Closes #9937
2022-01-18 12:15:18 +01:00
Benny Halevy
4476800493 flat_mutation_reader: get rid of timeout parameter
Now that the timeout is taken from the reader_permit.

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
2021-08-24 16:30:51 +03:00
Juliusz Stasiewicz
38b8a6ce2c test/boost: run_mutation_source_tests on streaming virtual table
Tests that require inter-partition forwarding are excluded.
2021-07-20 14:19:17 +02:00
Avi Kivity
a55b434a2b treewide: extent copyright statements to present day 2021-06-06 19:18:49 +03:00
Piotr Wojtczak
8825ae128d boost/tests: Test memtable_filling_virtual_table as mutation_source
Uses the infrastructure for testing mutation_sources, but only a
subset of it which does not do fast forwarding (since virtual_table
does not support it).
2021-05-12 17:05:35 +02:00