diagnostics()存储过程收集的数据包括以下几个方面: 来自sys schema中其他一些视图的信息,如:sys.version、sys.processlist、sys.latest_file_io、sys.memory_by_host_by_current_bytes、sys.memory_by_thread_by_current_bytes、sys.memory_by_user_by_current_bytes、sys.memory_global_by_current_bytes、sys.schem...
答案是肯定的。 Python提供了一个StringIO模块来完成这个设想,比如: from StringIO import StringIO import sys buff =StringIO() temp = sys.stdout #保存标准I/O流 sys.stdout = buff #将标准I/O流重定向到buff对象 print 42, ‘hello’, 0.001 sys.stdout =temp #恢复标准I/O流 print buff.getvalue(...
mysql> sho engines; ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'sho engines' at line 1 mysql> show engines; +---+---+---+---+---+---+ | Engine | Support | Comme...
IN USE LOADING MEDIA 不可为 Null 值。 mount_request_time datetime 装入的请求时间。如果没有挂起的装入操作 (status!=2),则为 NULL。可为 Null 值。 mount_expiration_time datetime 装入请求的过期时间(超时)。如果没有挂起的装入操作 (status!=2),则为 NULL。可为 Null 值。
sys.sh showeventmem server_kernel: admin:/diagnose>eventserver showmem Type MinNum MaxNum UseNum WaterLine Size PoolId Name --- --- --- --- --- --- --- --- 0 25152 112702 0 90161 184 166 EVENT_AGENT_128 1 6288 15000 0 12000 568 167 EVENT_AGENT_512 2 200 15000 0 12000 ...
fdatasync的功能与fsync类似,但是仅仅在必要的情况下才会同步metadata,因此可以减少一次IO写操作。那么,什么是“必要的情况”呢?根据man page中的解释: "fdatasync does not flush modified metadata unless that metadata is needed in order to allow a subsequent data retrieval to be corretly handled." ...
Even containers deployed inside the system containers have excellent performance, thought there is a slight overhead for network IO (as expected since packets emitted by inner containers go through an additional network interface / bridge inside the system container). Now, if you use Sysbox to dep...
Even containers deployed inside the system containers have excellent performance, thought there is a slight overhead for network IO (as expected since packets emitted by inner containers go through an additional network interface / bridge inside the system container). Now, if you use Sysbox to dep...
Qubes OS release 4.2.0 Brief summary When using sys-gui there is a permission error that prevents Qubes Updates to open. I'm reporting this specific issue but it's not the only app with this error. I started a topic on the forum around a...
You can use the Transact-SQL functionsDB_IDandOBJECT_IDto specify a value for thedatabase_idandobject_idparameters. However, passing values that are not valid to these functions may cause unintended results. Always make sure that a valid ID is returned when you use DB_ID or OBJECT_ID. Fo...