database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-03 09:13:20 +03:00
Code Activity

Report time spent in posix_fallocate() as a wait event.

Browse Source 
When allocating DSM segments with posix_fallocate() on Linux (see commit
899bd785), report this activity as a wait event exactly as we would if
we were using file-backed DSM rather than shm_open()-backed DSM.

Author: Thomas Munro
Discussion: https://postgr.es/m/CA%2BhUKGKCSh4GARZrJrQZwqs5SYp0xDMRr9Bvb%2BHQzJKvRgL6ZA%40mail.gmail.com
This commit is contained in:
Thomas Munro
2020-01-31 17:21:47 +13:00
parent d061ea21fc
commit ef02fb15a3
1 changed files with 2 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/backend/storage/ipc/dsm_impl.c
View File

@@ -371,10 +371,12 @@ dsm_impl_posix_resize(int fd, off_t size)
* interrupt pending. This avoids the possibility of looping forever * interrupt pending. This avoids the possibility of looping forever
* if another backend is repeatedly trying to interrupt us. * if another backend is repeatedly trying to interrupt us.
*/ */
pgstat_report_wait_start(WAIT_EVENT_DSM_FILL_ZERO_WRITE);
do do
{ {
rc = posix_fallocate(fd, 0, size); rc = posix_fallocate(fd, 0, size);
} while (rc == EINTR && !(ProcDiePending || QueryCancelPending)); } while (rc == EINTR && !(ProcDiePending || QueryCancelPending));
pgstat_report_wait_end();
/* /*
* The caller expects errno to be set, but posix_fallocate() doesn't * The caller expects errno to be set, but posix_fallocate() doesn't