Continuously getting cache hit ratio 0 percent alert from nimsoft. (no replies)

Continuously getting cache hit ratio 0 percent alert from nimsoft.

MYSQL version: 5.1.46-community

Currently the counter setting are :-

| query_cache_size | 16777216 |
| query_cache_limit | 1048576 |
| query_cache_type | ON |
| Qcache_hits | 20858 |
| Qcache_inserts | 11337 |
| Qcache_lowmem_prunes | 0 |
| Qcache_not_cached | 367 |
| Qcache_queries_in_cache | 10 |