[root@graphite jcb]# cat /proc/enhanceio/enhanceio_cache/stats
 reads                              1962
 writes                          6268272
 read_hits                           346
 read_hit_pct                         17
 write_hits                      1870824
 write_hit_pct                        29
 dirty_write_hits                 167399
 dirty_write_hit_pct                   2
 cached_blocks                     17664
 rd_replace                           65
 wr_replace                       394196
 [...]