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feat: track differrent patterns of multi/exec transactions (#2334)

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* feat: track differrent patterns of multi/exec transactions

This information is exposed via "DEBUG EXEC" command.

Signed-off-by: Roman Gershman <roman@dragonflydb.io>

* chore: address comments + add basic squasher stats

---------

Signed-off-by: Roman Gershman <roman@dragonflydb.io>
This commit is contained in:
Roman Gershman 2023-12-25 12:22:24 +02:00 • committed by GitHub
parent ce7497071c
commit bd7a02d474
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7 changed files with 72 additions and 1 deletions
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6
src/server/server_state.cc
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@ -48,7 +48,7 @@ auto ServerState::Stats::operator=(Stats&& other) -> Stats& {
}
ServerState::Stats& ServerState::Stats::Add(unsigned num_shards, const ServerState::Stats& other) {
static_assert(sizeof(Stats) == 10 * 8, "Stats size mismatch");
static_assert(sizeof(Stats) == 13 * 8, "Stats size mismatch");
for (int i = 0; i < NUM_TX_TYPES; ++i) {
this->tx_type_cnt[i] += other.tx_type_cnt[i];
@ -59,6 +59,10 @@ ServerState::Stats& ServerState::Stats::Add(unsigned num_shards, const ServerSta
this->eval_squashed_flushes += other.eval_squashed_flushes;
this->tx_schedule_cancel_cnt += other.tx_schedule_cancel_cnt;
this->multi_squash_executions += other.multi_squash_executions;
this->multi_squash_exec_hop_usec += other.multi_squash_exec_hop_usec;
this->multi_squash_exec_reply_usec += other.multi_squash_exec_reply_usec;
if (this->tx_width_freq_arr == nullptr) {
this->tx_width_freq_arr = new uint64_t[num_shards];
std::copy_n(other.tx_width_freq_arr, num_shards, this->tx_width_freq_arr);