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MDEV-6150 Speed up connection speed by moving creation of THD to new thread

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Creating a CONNECT object on client connect and pass this to the working thread which creates the THD.
Split LOCK_thread_count to different mutexes
Added LOCK_thread_start to syncronize threads
Moved most usage of LOCK_thread_count to dedicated functions
Use next_thread_id() instead of thread_id++

Other things:
- Thread id now starts from 1 instead of 2
- Added cast for thread_id as thread id is now of type my_thread_id
- Made THD->host const (To ensure it's not changed)
- Removed some DBUG_PRINT() about entering/exiting mutex as these was already logged by mutex code
- Fixed that aborted_connects and connection_errors_internal are counted in all cases
- Don't take locks for current_linfo when we set it (not needed as it was 0 before)
This commit is contained in:
Monty
2016-02-01 12:45:39 +02:00
parent 076aa182c2
commit 3d4a7390c1
50 changed files with 878 additions and 551 deletions
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12
storage/spider/spd_db_mysql.cc
View File

@@ -1717,7 +1717,7 @@ int spider_db_mysql::exec_query(
l_time->tm_hour, l_time->tm_min, l_time->tm_sec,
security_ctx->user ? security_ctx->user : "system user",
security_ctx->host_or_ip,
thd->thread_id,
(ulong) thd->thread_id,
tmp_query_str.c_ptr_safe());
}
if (log_result_error_with_sql & 1)
@@ -1731,7 +1731,7 @@ int spider_db_mysql::exec_query(
"sql: %s\n",
l_time->tm_year + 1900, l_time->tm_mon + 1, l_time->tm_mday,
l_time->tm_hour, l_time->tm_min, l_time->tm_sec,
thd->thread_id, conn->tgt_host, db_conn->thread_id,
(ulong) thd->thread_id, conn->tgt_host, (ulong) db_conn->thread_id,
tmp_query_str.c_ptr_safe());
}
}
@@ -1745,7 +1745,7 @@ int spider_db_mysql::exec_query(
"affected_rows: %llu id: %llu status: %u warning_count: %u\n",
l_time->tm_year + 1900, l_time->tm_mon + 1, l_time->tm_mday,
l_time->tm_hour, l_time->tm_min, l_time->tm_sec,
conn->tgt_host, db_conn->thread_id, thd->thread_id,
conn->tgt_host, (ulong) db_conn->thread_id, (ulong) thd->thread_id,
db_conn->affected_rows, db_conn->insert_id,
db_conn->server_status, db_conn->warning_count);
if (spider_param_log_result_errors() >= 3)
@@ -1760,7 +1760,7 @@ int spider_db_mysql::exec_query(
"affected_rows: %llu id: %llu status: %u warning_count: %u\n",
l_time->tm_year + 1900, l_time->tm_mon + 1, l_time->tm_mday,
l_time->tm_hour, l_time->tm_min, l_time->tm_sec,
conn->tgt_host, db_conn->thread_id, thd->thread_id,
conn->tgt_host, (ulong) db_conn->thread_id, (ulong) thd->thread_id,
db_conn->affected_rows, db_conn->insert_id,
db_conn->server_status, db_conn->warning_count);
}
@@ -1889,8 +1889,8 @@ void spider_db_mysql::print_warnings(
"from [%s] %ld to %ld: %s %s %s\n",
l_time->tm_year + 1900, l_time->tm_mon + 1, l_time->tm_mday,
l_time->tm_hour, l_time->tm_min, l_time->tm_sec,
conn->tgt_host, db_conn->thread_id,
current_thd->thread_id, row[0], row[1], row[2]);
conn->tgt_host, (ulong) db_conn->thread_id,
(ulong) current_thd->thread_id, row[0], row[1], row[2]);
row = mysql_fetch_row(res);
}
if (res)