66e43912d6
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
77 lines
2.4 KiB
C++
77 lines
2.4 KiB
C++
/*
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* Copyright (C) 2016-present ScyllaDB
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*
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* Modified by ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#include "readers/flat_mutation_reader_fwd.hh"
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#include "readers/flat_mutation_reader_v2.hh"
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#include "db/system_keyspace.hh"
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#include "tracing/trace_state.hh"
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namespace replica {
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class database;
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}
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namespace db {
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namespace size_estimates {
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struct token_range {
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bytes start;
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bytes end;
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};
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class size_estimates_mutation_reader final : public flat_mutation_reader_v2::impl {
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replica::database& _db;
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db::system_keyspace& _sys_ks;
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const dht::partition_range* _prange;
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const query::partition_slice& _slice;
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using ks_range = std::vector<sstring>;
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std::optional<ks_range> _keyspaces;
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ks_range::const_iterator _current_partition;
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streamed_mutation::forwarding _fwd;
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flat_mutation_reader_v2_opt _partition_reader;
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public:
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size_estimates_mutation_reader(replica::database& db, db::system_keyspace& sys_ks, schema_ptr, reader_permit, const dht::partition_range&, const query::partition_slice&, streamed_mutation::forwarding);
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virtual future<> fill_buffer() override;
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virtual future<> next_partition() override;
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virtual future<> fast_forward_to(const dht::partition_range&) override;
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virtual future<> fast_forward_to(position_range) override;
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virtual future<> close() noexcept override;
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private:
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future<> get_next_partition();
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future<> close_partition_reader() noexcept;
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std::vector<db::system_keyspace::range_estimates>
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estimates_for_current_keyspace(std::vector<token_range> local_ranges) const;
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};
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struct virtual_reader {
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replica::database& db;
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db::system_keyspace& sys_ks;
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flat_mutation_reader_v2 operator()(schema_ptr schema,
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reader_permit permit,
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const dht::partition_range& range,
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const query::partition_slice& slice,
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tracing::trace_state_ptr trace_state,
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streamed_mutation::forwarding fwd,
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mutation_reader::forwarding fwd_mr) {
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return make_flat_mutation_reader_v2<size_estimates_mutation_reader>(db, sys_ks, std::move(schema), std::move(permit), range, slice, fwd);
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}
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virtual_reader(replica::database& db_, db::system_keyspace& sys_ks_) noexcept : db(db_), sys_ks(sys_ks_) {}
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};
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future<std::vector<token_range>> test_get_local_ranges(replica::database& db, db::system_keyspace& sys_ks);
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} // namespace size_estimates
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} // namespace db
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