Specifications
- Optional agent: yes
- Monitoring Parameters: 20
- Data Source: xentop
- API: Xen
- Programming Language: Perl 5
Functions
Records Xen hypervisor domain statistics using xentop utility on Linux kernel 2.6 version. The recorder will not work if xentop is not present on the system. Superuser access is required to run the recorder. The recorder outputs collected data as sdrd, sdr raw data format.
Parameters
xenrec records per domain statistics from dom0 level, including: domain state, cpu usage in seconds, cpu usage in percentage, current memory, current memory in percentage, maximum domain memory stats, in KB and many others. A complete list of all metrics is presented below:
| id | name | type | description |
|---|---|---|---|
| 1 | timestamp | time | seconds since Epoch |
| 2 | name | string | domain name, the guest domU name |
| 3 | state | string | domain state: blocked (b), dying (d), shutdown (s) crashed (c), paused (p), running (r) |
| 4 | cputime | number | displays cpu usage in seconds |
| 5 | cpupct | number | displays cpu usage in percentage |
| 6 | mem | number | current memory |
| 7 | mempct | number | current memory in percentage |
| 8 | maxmem | number | maximum domain memory stats, in KB |
| 9 | maxmempct | number | memory stats in percentage, ratio of current domain memory to total node memory |
| 10 | vpus | number | number of virtual processing units, vCPUs |
| 11 | nets | number | number of virtual networks |
| 12 | nettx | rate | data transmission rate in KB |
| 13 | netrx | rate | data receiving rate in KB |
| 14 | vbds | number | total number of virtual block devices in the domain |
| 15 | vbdoo | number | total number of VBD OO requests |
| 16 | vbdrd | rate | VBD read rate |
| 17 | vbdwr | rate | VBD write rate |
| 18 | vbdrsect | rate | VBD read sectors rate |
| 19 | vbdwsect | rate | VBD write sectors rate |
| 20 | ssid | number | domain security id |