optimization - Erlang: optimize complex qlc -

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i have qlc

refsblocked = qlc:e(qlc:q([     ref1 ||     {{ref1, {pattern, {_status1, _pattern1, limit1}}}, count} <- dict:to_list(         qlc:fold(             fun({key, _ref2}, acc) ->                 dict:update_counter(key, 1, acc)             end,             dict:new(),             qlc:q([                 {{ref1, {pattern, {status1, pattern1, limit1}}}, ref2} ||                 {ref2, {status, status2}} <- ets:table(tmp),                 {ref3, {tag, tag3}} <- ets:table(tmp),                 ref2 =:= ref3,                 {ref1, {pattern, {status1, pattern1, limit1}}} <- ets:table(tmp),                 ref =:= ref1,                 status1 =:= status2,                 pattern1 =:= tag3             ])         )     ),     count >= limit1 ], unique))

where tmp ets of type bag , ref particular identifier need test.

ets contains from hundreds thousands of entries 

{ref1, {definition, {tuple1}}} {ref1, {status, scheduled}} {ref1, {status, blocked}} {ref1, {pattern, {scheduled, pattern11, limit11}}} {ref1, {pattern, {dispatched, pattern12, limit12}}} {ref1, {tag, tag11}} {ref2, {definition, {tuple2}}} {ref2, {status, scheduled}} {ref2, {status, dispatched}} {ref2, {pattern, {scheduled, pattern21, limit21}}} {ref2, {pattern, {dispatched, pattern22, limit22}}} {ref2, {tag, tag21}} {ref3, {definition, tuple3}} {ref3, {status, error}}

i. e. each ref there 1 definition, 1 or 2 (of four) statuses, 0 or more (in cases no more 3) patterns , 0 or more (in cases no more 3) tags.

i need test whether 1 particular identifier blocked others. blocked when number of identifiers matching of patterns on tag = pattern , status = pattern status more or equal pattern limit.

is there way optimize qlc?

unless have different, more efficient equality relation use, code have there gets. imagine you've profiled code , found slow? in way?


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