| Measurement |
Description |
Measurement Unit |
Interpretation |
| Availability |
Indicates the availability of the cluster service. |
Percent |
The availability is 100% when the cluster process is running.
This measure will report the value 0, if the cluster process is not running. |
| Num_procs_running |
Indicates the number of instances of the cluster process that are currently running. |
Number |
The value 0 for this measure is indicative of the non-availability of the cluster service.
The detailed diagnosis of this measure reveals the process ID of each running instance of the cluster process and the resource and I/O usage of each instance, so that you can quickly identify which instance is resource-intensive. |
| Cpu_util |
Indicates the percentage of CPU resources used by the cluster process. |
Percent |
A value close to 100% indicates that the cluster process is hogging the CPU resources of the ‘active’ node in the cluster. |
| Handle_count |
Indicates the number of handles opened by the process. |
Number |
An increasing trend in this measure is indicative of a memory leak in the process. |
| No_of_threads |
Indicates the number of threads that are used by the process. |
Number |
|
| Virtual_memory_used |
Indicates the amount of virtual memory that is being used by the process. |
MB |
|
| Private_memory_used |
Indicates the amount of memory that this process has been allotted, that cannot be shared with other processes. |
MB |
|
| Pool_paged_bytes |
Indicates the amount of memory currently in the pool paged area of system memory. |
MB |
|
| Pool_Nonpaged_bytes |
Indicates the amount of memory currently in the pool non-paged area of system memory. |
MB |
|
| IO_data_rate |
Indicates the rate at which processes are reading and writing bytes in I/O operations. |
Kbytes/Sec |
This value counts all I/O activity generated by each process and includes file, network and device I/Os. |
| IO_data_oper_rate |
Indicates the rate at which the process is issuing read and write data to file, network and device I/O operations. |
Operations/Sec |
|
| IO_read_data_rate |
Indicates the rate at which the process is reading data from file, network and device I/O operations. |
Kbytes/Sec |
|
| IO_write_data_rate |
Indicates the rate at which the process is writing data to file, network and device I/O operations. |
Kbytes/Sec |
|
| Page_fault_rate |
Indicates the total rate at which page faults are occurring for the threads of all matching processes. |
Faults/Sec |
A page fault occurs when a thread refers to a virtual memory page that is not in its working set in main memory. This may not cause the page to be fetched from disk if it is on the standby list and hence already in main memory, or if it is in use by another process with whom the page is shared. |
| Working_set |
Indicates the current size of the working set of a process. |
MB |
The Working Set is the set of memory pages touched recently by the threads in the process. If free memory in the computer is above a threshold, pages are left in the Working Set of a process even if they are not in use. When free memory falls below a threshold, pages are trimmed from Working Sets. If they are needed they will then be soft-faulted back into the Working Set before leaving main memory.
The detailed diagnosis for this test provides details of the individual process instances and their individual working sets.
Comparing the working set across process instances indicates which instances taking up excessive memory. |