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HOw to increase the performance of filter.

HOw to increase the performance of filter for large set of data .?????????

The existing filtering code is already optimized, there is no way to significently increase it.
    - fitlerBy functionality is few times faster than manual filtering ( same for #text_filter, #select_filter etc. )
    - grid in SRND mode filters much faster than default one
    - usage of #stat_* with filtering may decrease performance ( after each filtering stat need to be recalculated )
    - grid in split mode is about 2 times slower than in default mode, this related to filtering as well.

In common case, it may have sense to use server side filtering , if client side filtering is too slow in your case.