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Implement journaled write throttling for the SSD+HDD case

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This commit is contained in:
Vitaliy Filippov
2021-04-10 17:44:12 +03:00
parent 4694811eab
commit 2ab423d4ef
9 changed files with 172 additions and 85 deletions
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src/blockstore_open.cpp
+21
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@@ -79,6 +79,11 @@ void blockstore_impl_t::parse_config(blockstore_config_t & config)
max_flusher_count = strtoull(config["flusher_count"].c_str(), NULL, 10);
min_flusher_count = strtoull(config["min_flusher_count"].c_str(), NULL, 10);
max_write_iodepth = strtoull(config["max_write_iodepth"].c_str(), NULL, 10);
throttle_small_writes = config["throttle_small_writes"] == "true" || config["throttle_small_writes"] == "1" || config["throttle_small_writes"] == "yes";
throttle_target_iops = strtoull(config["throttle_target_iops"].c_str(), NULL, 10);
throttle_target_mbs = strtoull(config["throttle_target_mbs"].c_str(), NULL, 10);
throttle_target_parallelism = strtoull(config["throttle_target_parallelism"].c_str(), NULL, 10);
throttle_threshold_us = strtoull(config["throttle_threshold_us"].c_str(), NULL, 10);
// Validate
if (!block_size)
{
@@ -180,6 +185,22 @@ void blockstore_impl_t::parse_config(blockstore_config_t & config)
{
throw std::runtime_error("immediate_commit=all requires disable_journal_fsync and disable_data_fsync");
}
if (!throttle_target_iops)
{
throttle_target_iops = 100;
}
if (!throttle_target_mbs)
{
throttle_target_mbs = 100;
}
if (!throttle_target_parallelism)
{
throttle_target_parallelism = 1;
}
if (!throttle_threshold_us)
{
throttle_threshold_us = 50;
}
// init some fields
clean_entry_bitmap_size = block_size / bitmap_granularity / 8;
clean_entry_size = sizeof(clean_disk_entry) + 2*clean_entry_bitmap_size;