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commitlog: set flush threshold to half of the limit size

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Once we enable commitlog hard limit by default, we would like
to have some room in case flushing memtables takes some time
to catch up. This threshold is half the limit.

Signed-off-by: Eliran Sinvani <eliransin@scylladb.com>
This commit is contained in:
Eliran Sinvani
2022-07-05 16:29:05 +03:00
parent d2a8651bce
commit 63d62a7db2
1 changed files with 1 additions and 9 deletions
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10
db/commitlog/commitlog.cc
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@@ -1384,15 +1384,7 @@ db::commitlog::segment_manager::segment_manager(config c)
if (cfg.commitlog_flush_threshold_in_mb.has_value()) {
return size_t(std::ceil(*cfg.commitlog_flush_threshold_in_mb / double(smp::count))) * 1024 * 1024;
} else {
if (max_disk_size >= (max_size*2)) {
return max_disk_size - max_size;
} else {
if (max_disk_size > (max_size/2)) {
return max_disk_size - (max_size/2);
} else {
return max_disk_size - max_disk_size/3;
}
}
return max_disk_size / 2;
}
}())
, _flush_semaphore(cfg.max_active_flushes)