Struct DbStats 

#[non_exhaustive]
pub struct DbStats {

    pub latest_commit_id: u64,
    pub mode: DbMode,
    pub main_db_bytes: u64,
    pub main_db_next_page_id: u64,
    pub buffer_pool_pages: u64,
    pub buffer_pool_hits: u64,
    pub buffer_pool_misses: u64,
    pub dirty_pages: u64,
    pub tracked_readers: u32,
    pub pending_tombstones: u32,
    pub segments_live: u32,
    pub segments_total_bytes: u64,
    pub mmap_bytes_in_use: u64,
    pub mk_epoch: u64,
    pub free_list_pending_entries: u64,
    pub spill_bytes_in_use: u64,
}

Point-in-time snapshot of database runtime metrics.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

latest_commit_id: u64

Commit sequence number of the most recently committed write transaction.

mode: DbMode

Operating mode of the open Db handle.

main_db_bytes: u64

Size of the main database file in bytes at the time of the call.

main_db_next_page_id: u64

Next page id that will be allocated by the writer (monotonic watermark).

buffer_pool_pages: u64

Current number of pages resident in the buffer pool (main.db cache).

buffer_pool_hits: u64

Cumulative cache hits on the buffer pool since the Db was opened.

buffer_pool_misses: u64

Cumulative cache misses on the buffer pool since the Db was opened.

dirty_pages: u64

Number of dirty (unflushed) pages currently in both cache classes combined.

tracked_readers: u32

Number of read transactions currently registered with the Db.

pending_tombstones: u32

Number of segment tombstones that are deferred pending reader drain.

segments_live: u32

Number of live segments recorded in the catalog.

segments_total_bytes: u64

Sum of total_bytes across all live catalog segments.

mmap_bytes_in_use: u64

Bytes currently charged to decrypted mmap scratch views.

mk_epoch: u64

Current master-key epoch (advances on each successful rekey_db).

free_list_pending_entries: u64

Number of entries currently in the persistent free-list (both free-list rows and deferred-free pairs combined).

spill_bytes_in_use: u64

Cumulative spill bytes written to the per-transaction tmp file for the currently active write transaction, or 0 if no write transaction is active.

Trait Implementations

impl Clone for DbStats

fn clone(&self) -> DbStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DbStats

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

Formats the value using the given formatter.