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Werk #10122: Fixed performance regression for event console history queries.

Component Event Console
Title Fixed performance regression for event console history queries.
Date Dec 10, 2019
Level Prominent Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.0.0i1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT
1.6.0p7 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

The event console history queries had a rather serious performance regression in 1.6.0: For common queries, the EC tries to pre-filter the history via egrep before doing further filtering itself. This pre-filtering was broken due to a typo and has been repaired now.

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