From 51a7b458db74c1c285688ab9991fe590c9c97357 Mon Sep 17 00:00:00 2001 From: Michael Paquier Date: Wed, 16 Jun 2021 14:49:22 +0900 Subject: [PATCH v10 2/2] Add tweak to test CPU usage within a session, for wal_compression --- src/backend/tcop/postgres.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c index 8cea10c901..2d7affe115 100644 --- a/src/backend/tcop/postgres.c +++ b/src/backend/tcop/postgres.c @@ -178,6 +178,10 @@ static bool RecoveryConflictPending = false; static bool RecoveryConflictRetryable = true; static ProcSignalReason RecoveryConflictReason; +/* Amount of user and system time used, tracked at start */ +static struct timeval user_time; +static struct timeval system_time; + /* reused buffer to pass to SendRowDescriptionMessage() */ static MemoryContext row_description_context = NULL; static StringInfoData row_description_buf; @@ -3937,6 +3941,12 @@ PostgresMain(int argc, char *argv[], volatile bool send_ready_for_query = true; bool idle_in_transaction_timeout_enabled = false; bool idle_session_timeout_enabled = false; + struct rusage r; + + /* Get start usage for reference point */ + getrusage(RUSAGE_SELF, &r); + memcpy((char *) &user_time, (char *) &r.ru_utime, sizeof(user_time)); + memcpy((char *) &system_time, (char *) &r.ru_stime, sizeof(system_time)); /* Initialize startup process environment if necessary. */ if (!IsUnderPostmaster) @@ -4683,6 +4693,14 @@ PostgresMain(int argc, char *argv[], case 'X': + /* Get stop status of process and log comparison with start */ + getrusage(RUSAGE_SELF, &r); + elog(LOG,"user diff: %ld.%06ld, system diff: %ld.%06ld", + (long) (r.ru_utime.tv_sec - user_time.tv_sec), + (long) (r.ru_utime.tv_usec - user_time.tv_usec), + (long) (r.ru_stime.tv_sec - system_time.tv_sec), + (long) (r.ru_stime.tv_usec - system_time.tv_usec)); + /* * Reset whereToSendOutput to prevent ereport from attempting * to send any more messages to client. -- 2.32.0