Sketches　enable　efficient　and　fine-grained　network　measurement　results　with　configurable　resource-performance　trade-offs.　While　sketch　configurations　are　guided　by　theories,　the　current　theoretical　guidelines　are　either　impractical　or　deficient　for　sketch　configurations　on　emerging　programmable　switches.　To　better　configure　sketches　on　programmable　switches,　we　(1)　systematically　analyze　the　limitations　of　sketch　configuration　guidelines　on　programmable　hardware　switches　(i.e.,　unguided　parameters,　accuracy　profiles,　and　resource　budgets);　(2)　propose　a　generic　and　practical　framework　called　SketchGuide　to　automate　efficient　sketch　configurations　on　programmable　switches;　(3)　implement　SketchGuide　on　a　Barefoot　Tofino　switch　and　compare　SketchGuide　to　the　state-of-the-art　sketches　by　conducting　extensive　experiments.　Our　evaluations　demonstrate　that　SketchGuide　can　automatically　configure　unguided　parameters　given　resource　budgets.　SketchGuide　reduces　the　hardware　resource　footprint　by　52.92%-99.28%　compared　with　current　guidelines　without　impacting　fidelity.