| Measurement |
Description |
Measurement Unit |
Interpretation |
| size |
Indicates the current size of this buffer pool. |
MB |
A well-tuned environment is the one where this buffer should be sufficiently sized. A low value of this measure is always unhealthy. |
| totBuff |
Indicates the number of buffers in this buffer pool. |
Number |
It includes both the allocated and free buffers. |
| freeBuff |
Indicates the number of unused buffer in this buffer pool. |
Number |
|
| allocateHit |
Indicates the number of buffers allocated to this buffer pool. |
Number |
A very low value could indicate that many allocations have failed owing to lack of adequate buffers. If the measure repeatedly reports low values, it could be indicative of memory bottleneck in the router. |
| allocateMiss |
Indicates the number of times buffer could not be allocated from this buffer pool. |
Number |
Ideally the buffer miss count should be 0. Repeated buffer misses indicate memory bottleneck in the router. |
| creationFail |
Indicates the number of times the new buffers could not be created in this buffer pool. |
Number |
A low value is desired for this measure. |
| buffUsed |
Indicates the number of used buffer space in this buffer pool. |
Number |
|
| usedBuffPercent |
Indicates the percentage of buffer used currently in this buffer pool. |
Percent |
If the buffer size is less, then for many requests the buffer cannot be used leading to more swapping; therefore the buffer size needs to be increased. |