Struct LogStatsSnapshot 

pub struct LogStatsSnapshot {

    pub end_of_log: u64,
    pub last_flush_lsn: u64,
    pub n_repeat_fault_reads: u64,
    pub n_temp_buffer_writes: u64,
    pub n_log_buffers: u64,
    pub n_log_buffer_bytes: u64,
    pub n_log_fsyncs: u64,
    pub n_fsync_requests: u64,
    pub n_file_opens: u64,
    pub n_sequential_reads: u64,
    pub n_sequential_read_bytes: u64,
    pub n_sequential_writes: u64,
    pub n_sequential_write_bytes: u64,
    pub n_random_reads: u64,
    pub n_random_read_bytes: u64,
    pub n_fsync_timeouts: u64,
    pub n_group_commits: u64,
    pub fsync_time_ms: u64,
    pub n_fsync_batch_size_sum: u64,
}

Snapshot of log subsystem statistics.

LogStatDefinition (LOGMGR_, FILEMGR_, FSYNCMGR_*).

Fields

end_of_log: u64

Current end-of-log LSN (as raw u64).

last_flush_lsn: u64

LSN of the last completed flush.

n_repeat_fault_reads: u64

Number of repeated fault reads (log entries re-read on cache miss).

n_temp_buffer_writes: u64

Number of temporary-buffer writes (oversized entries).

n_log_buffers: u64

Number of log buffers in the pool.

n_log_buffer_bytes: u64

Total bytes across all log buffers.

n_log_fsyncs: u64

Number of fdatasync calls completed (after group-commit coalescing).

n_fsync_requests: u64

Number of fdatasync requests (before coalescing).

n_file_opens: u64

Number of log files opened (LRU cache miss).

n_sequential_reads: u64

Number of sequential read operations.

n_sequential_read_bytes: u64

Total bytes read sequentially.

n_sequential_writes: u64

Number of sequential write operations.

n_sequential_write_bytes: u64

Total bytes written sequentially.

n_random_reads: u64

Number of random (point-lookup) read operations.

n_random_read_bytes: u64

Total bytes from random reads.

n_fsync_timeouts: u64

Number of fsync requests that timed out.

n_group_commits: u64

Number of group-commit batches (leader served ≥1 waiter).

fsync_time_ms: u64

Cumulative fsync duration in milliseconds.

n_fsync_batch_size_sum: u64

Sum of all group-commit batch sizes (total waiters served across all batches).

Trait Implementations

impl Clone for LogStatsSnapshot

fn clone(&self) -> LogStatsSnapshot

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for LogStatsSnapshot

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for LogStatsSnapshot

fn default() -> LogStatsSnapshot

Returns the “default value” for a type.

impl From<&LogManagerStats> for LogStatsSnapshot

fn from(s: &LogManagerStats) -> Self

Converts to this type from the input type.