PTQL (Process Table Query Language)
Hyperic SIGAR provides a mechanism to identify processes called Process Table Query Language. All operating systems assign a unique id (PID) to each running process. However, the PID is a random number that may also change at any point in time when a process is restarted. PTQL uses process attributes that will persist over time to identify a process.
翻译:
PTQL (进程表查询语言)Hyperic SIGAR 提供一种称作进程表查询语言机制来识别进程. 所有的操作系统都给正在运行的进程赋予一个特有的进程ID, 但是因为进程ID 是个随机数字所以进程重启的时候这个进程ID很可能改变. PTQL 则使用进程属性来长时间识别一个进程.
PTQL Syntax
PTQL Queries must be in the following format:
Class.Attribute.operator=value
Enclose the query in quotes if it contains any spaces. For example:
sigar> ps "Exe.Name.ct=Program Files"
Where:
- Class is the name of the Sigar class minus the Proc prefix.
- Attribute is an attribute of the given Class, index into an array or key in a Map class.
- operator is one of the following for String values:
eq - Equal to value
ne - Not Equal to value
ew - Ends with value
sw - Starts with value
ct - Contains value (substring)
re - Regular expression value matches
operator is one of the following for numeric values:
eq - Equal to value
ne - Not Equal to value
gt - Greater than value
ge - Greater than or equal value
lt - Less than value
le - Less than or equal value
note: Multiple queries must delimited by a comma.
