From fc99a64d289160027a5b6ce8603885f98fe7c7aa Mon Sep 17 00:00:00 2001
From: 1708-huayu <57060237+1708-huayu@users.noreply.github.com>
Date: Sat, 2 Dec 2023 13:46:34 +0800
Subject: [PATCH] backup

---
 .gitignore               | 4 ++++
 df/磁盘处理记录.md       | 3 +--
 数据库/mysql/线程占用.md | 8 ++++++++
 3 files changed, 13 insertions(+), 2 deletions(-)
 create mode 100644 .gitignore

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..17e7c4b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+# Default ignored files
+/shelf/
+/.idea/workspace.xml
+.idea
diff --git a/df/磁盘处理记录.md b/df/磁盘处理记录.md
index ae49749..b413fb9 100644
--- a/df/磁盘处理记录.md
+++ b/df/磁盘处理记录.md
@@ -33,5 +33,4 @@ dev/sda3   /media/shixiaohua/a44c8a7c-5b7a-4e2a-8810-5af0561c94ac   ext4   defau
 mount
 # 查看磁盘分区
 lsblk
-```
-
+```
\ No newline at end of file
diff --git a/数据库/mysql/线程占用.md b/数据库/mysql/线程占用.md
index bf8a81e..2e091f7 100644
--- a/数据库/mysql/线程占用.md
+++ b/数据库/mysql/线程占用.md
@@ -7,8 +7,16 @@ information_schema这张数据表保存了MySQL服务器所有数据库的信息
 3. `innodb_lock_waits` 锁等待的对应关系
 
 ```sql
+-- 查看当前连接数
+SHOW STATUS LIKE 'Threads_connected';
+-- 查看系统设置连接数
+SHOW VARIABLES LIKE 'max_connections';
+-- 查看那个表被锁住
+SHOW OPEN TABLES WHERE In_use > 0;
 -- 查看哪个事物占用锁
 select * from information_schema.innodb_trx;
+-- 杀死进程
+kill trx_mysql_thread_id;
 select trx_mysql_thread_id from information_schema.innodb_trx where trx_state ='LOCK WAIT ';
 -- 查看所有进程
 show full processlist;