diff options
Diffstat (limited to 'src/backend/postmaster/checkpointer.c')
| -rw-r--r-- | src/backend/postmaster/checkpointer.c | 32 |
1 files changed, 2 insertions, 30 deletions
diff --git a/src/backend/postmaster/checkpointer.c b/src/backend/postmaster/checkpointer.c index ace9893d957..4fe403c9a89 100644 --- a/src/backend/postmaster/checkpointer.c +++ b/src/backend/postmaster/checkpointer.c @@ -91,17 +91,11 @@ * requesting backends since the last checkpoint start. The flags are * chosen so that OR'ing is the correct way to combine multiple requests. * - * num_backend_writes is used to count the number of buffer writes performed - * by user backend processes. This counter should be wide enough that it - * can't overflow during a single processing cycle. num_backend_fsync - * counts the subset of those writes that also had to do their own fsync, - * because the checkpointer failed to absorb their request. - * * The requests array holds fsync requests sent by backends and not yet * absorbed by the checkpointer. * - * Unlike the checkpoint fields, num_backend_writes, num_backend_fsync, and - * the requests fields are protected by CheckpointerCommLock. + * Unlike the checkpoint fields, requests related fields are protected by + * CheckpointerCommLock. *---------- */ typedef struct @@ -125,9 +119,6 @@ typedef struct ConditionVariable start_cv; /* signaled when ckpt_started advances */ ConditionVariable done_cv; /* signaled when ckpt_done advances */ - uint32 num_backend_writes; /* counts user backend buffer writes */ - uint32 num_backend_fsync; /* counts user backend fsync calls */ - int num_requests; /* current # of requests */ int max_requests; /* allocated array size */ CheckpointerRequest requests[FLEXIBLE_ARRAY_MEMBER]; @@ -1095,10 +1086,6 @@ ForwardSyncRequest(const FileTag *ftag, SyncRequestType type) LWLockAcquire(CheckpointerCommLock, LW_EXCLUSIVE); - /* Count all backend writes regardless of if they fit in the queue */ - if (!AmBackgroundWriterProcess()) - CheckpointerShmem->num_backend_writes++; - /* * If the checkpointer isn't running or the request queue is full, the * backend will have to perform its own fsync request. But before forcing @@ -1108,12 +1095,6 @@ ForwardSyncRequest(const FileTag *ftag, SyncRequestType type) (CheckpointerShmem->num_requests >= CheckpointerShmem->max_requests && !CompactCheckpointerRequestQueue())) { - /* - * Count the subset of writes where backends have to do their own - * fsync - */ - if (!AmBackgroundWriterProcess()) - CheckpointerShmem->num_backend_fsync++; LWLockRelease(CheckpointerCommLock); return false; } @@ -1270,15 +1251,6 @@ AbsorbSyncRequests(void) LWLockAcquire(CheckpointerCommLock, LW_EXCLUSIVE); - /* Transfer stats counts into pending pgstats message */ - PendingCheckpointerStats.buf_written_backend - += CheckpointerShmem->num_backend_writes; - PendingCheckpointerStats.buf_fsync_backend - += CheckpointerShmem->num_backend_fsync; - - CheckpointerShmem->num_backend_writes = 0; - CheckpointerShmem->num_backend_fsync = 0; - /* * We try to avoid holding the lock for a long time by copying the request * array, and processing the requests after releasing the lock. |