diff options
Diffstat (limited to 'doc/src/sgml/monitoring.sgml')
| -rw-r--r-- | doc/src/sgml/monitoring.sgml | 52 |
1 files changed, 19 insertions, 33 deletions
diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml index 128ee13b5f7..5b58d2e84dc 100644 --- a/doc/src/sgml/monitoring.sgml +++ b/doc/src/sgml/monitoring.sgml @@ -646,18 +646,11 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser <itemizedlist> <listitem> <para> - <literal>LWLockNamed</>: The backend is waiting for a specific named - lightweight lock. Each such lock protects a particular data - structure in shared memory. <literal>wait_event</> will contain - the name of the lightweight lock. - </para> - </listitem> - <listitem> - <para> - <literal>LWLockTranche</>: The backend is waiting for one of a - group of related lightweight locks. All locks in the group perform - a similar function; <literal>wait_event</> will identify the general - purpose of locks in that group. + <literal>LWLock</>: The backend is waiting for a lightweight lock. + Each such lock protects a particular data structure in shared memory. + <literal>wait_event</> will contain a name identifying the purpose + of the lightweight lock. (Some locks have specific names; others + are part of a group of locks each with a similar purpose.) </para> </listitem> <listitem> @@ -825,7 +818,7 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser <tbody> <row> - <entry morerows="41"><literal>LWLockNamed</></entry> + <entry morerows="57"><literal>LWLock</></entry> <entry><literal>ShmemIndexLock</></entry> <entry>Waiting to find or allocate space in shared memory.</entry> </row> @@ -1011,7 +1004,6 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser <entry>Waiting to read or update old snapshot control information.</entry> </row> <row> - <entry morerows="15"><literal>LWLockTranche</></entry> <entry><literal>clog</></entry> <entry>Waiting for I/O on a clog (transaction status) buffer.</entry> </row> @@ -1279,7 +1271,7 @@ SELECT pid, wait_event_type, wait_event FROM pg_stat_activity WHERE wait_event i pid | wait_event_type | wait_event ------+-----------------+--------------- 2540 | Lock | relation - 6644 | LWLockNamed | ProcArrayLock + 6644 | LWLock | ProcArrayLock (2 rows) </programlisting> </para> @@ -3347,55 +3339,49 @@ SELECT pg_stat_get_backend_pid(s.backendid) AS pid, </row> <row> <entry><literal>lwlock-acquire</literal></entry> - <entry><literal>(char *, int, LWLockMode)</literal></entry> + <entry><literal>(char *, LWLockMode)</literal></entry> <entry>Probe that fires when an LWLock has been acquired. arg0 is the LWLock's tranche. - arg1 is the LWLock's offset within its tranche. - arg2 is the requested lock mode, either exclusive or shared.</entry> + arg1 is the requested lock mode, either exclusive or shared.</entry> </row> <row> <entry><literal>lwlock-release</literal></entry> - <entry><literal>(char *, int)</literal></entry> + <entry><literal>(char *)</literal></entry> <entry>Probe that fires when an LWLock has been released (but note that any released waiters have not yet been awakened). - arg0 is the LWLock's tranche. - arg1 is the LWLock's offset within its tranche.</entry> + arg0 is the LWLock's tranche.</entry> </row> <row> <entry><literal>lwlock-wait-start</literal></entry> - <entry><literal>(char *, int, LWLockMode)</literal></entry> + <entry><literal>(char *, LWLockMode)</literal></entry> <entry>Probe that fires when an LWLock was not immediately available and a server process has begun to wait for the lock to become available. arg0 is the LWLock's tranche. - arg1 is the LWLock's offset within its tranche. - arg2 is the requested lock mode, either exclusive or shared.</entry> + arg1 is the requested lock mode, either exclusive or shared.</entry> </row> <row> <entry><literal>lwlock-wait-done</literal></entry> - <entry><literal>(char *, int, LWLockMode)</literal></entry> + <entry><literal>(char *, LWLockMode)</literal></entry> <entry>Probe that fires when a server process has been released from its wait for an LWLock (it does not actually have the lock yet). arg0 is the LWLock's tranche. - arg1 is the LWLock's offset within its tranche. - arg2 is the requested lock mode, either exclusive or shared.</entry> + arg1 is the requested lock mode, either exclusive or shared.</entry> </row> <row> <entry><literal>lwlock-condacquire</literal></entry> - <entry><literal>(char *, int, LWLockMode)</literal></entry> + <entry><literal>(char *, LWLockMode)</literal></entry> <entry>Probe that fires when an LWLock was successfully acquired when the caller specified no waiting. arg0 is the LWLock's tranche. - arg1 is the LWLock's offset within its tranche. - arg2 is the requested lock mode, either exclusive or shared.</entry> + arg1 is the requested lock mode, either exclusive or shared.</entry> </row> <row> <entry><literal>lwlock-condacquire-fail</literal></entry> - <entry><literal>(char *, int, LWLockMode)</literal></entry> + <entry><literal>(char *, LWLockMode)</literal></entry> <entry>Probe that fires when an LWLock was not successfully acquired when the caller specified no waiting. arg0 is the LWLock's tranche. - arg1 is the LWLock's offset within its tranche. - arg2 is the requested lock mode, either exclusive or shared.</entry> + arg1 is the requested lock mode, either exclusive or shared.</entry> </row> <row> <entry><literal>lock-wait-start</literal></entry> |