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Improve AWK incantation
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@ -488,7 +488,7 @@ to focus on rerunning failing items only.
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If you wish to compare two CSV reports non-interactively, here is a handy `awk` incantation:
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If you wish to compare two CSV reports non-interactively, here is a handy `awk` incantation:
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```sh
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```sh
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awk 'BEGIN{FS=",";OFS=",";print "Name,Old,New,Ratio"}FNR==1{trueNF=NF;next}NF<trueNF{print "Benchmark names should not contain newlines";exit 1}FNR==NR{oldTime=$(NF-trueNF+2);NF-=trueNF-1;a[$0]=oldTime;next}{newTime=$(NF-trueNF+2);NF-=trueNF-1;print $0,a[$0],newTime,newTime/a[$0];gs+=log(newTime/a[$0]);gc++}END{if(gc>0)print "Geometric mean,,",exp(gs/gc)}' old.csv new.csv
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awk 'BEGIN{FS=",";OFS=",";print "Name,Old,New,Ratio"}FNR==1{trueNF=NF;next}NF<trueNF{print "Benchmark names should not contain newlines";exit 1}FNR==NR{oldTime=$(NF-trueNF+2);NF-=trueNF-1;a[$0]=oldTime;next}{newTime=$(NF-trueNF+2);NF-=trueNF-1;if(a[$0]){print $0,a[$0],newTime,newTime/a[$0];gs+=log(newTime/a[$0]);gc++}}END{if(gc>0)print "Geometric mean,,",exp(gs/gc)}' old.csv new.csv
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```
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```
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A larger shell snippet to compare two `git` commits can be found in `compare_benches.sh`.
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A larger shell snippet to compare two `git` commits can be found in `compare_benches.sh`.
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@ -25,7 +25,7 @@ compare_benches () {
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cabal run -v0 benchmarks -- --baseline "$OLDCSV" --csv "$NEWCSV" "$@" && \
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cabal run -v0 benchmarks -- --baseline "$OLDCSV" --csv "$NEWCSV" "$@" && \
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git checkout -q "@{-2}" && \
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git checkout -q "@{-2}" && \
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awk 'BEGIN{FS=",";OFS=",";print "Name,'"$OLD"','"$NEW"',Ratio"}FNR==1{trueNF=NF;next}NF<trueNF{print "Benchmark names should not contain newlines";exit 1}FNR==NR{oldTime=$(NF-trueNF+2);NF-=trueNF-1;a[$0]=oldTime;next}{newTime=$(NF-trueNF+2);NF-=trueNF-1;print $0,a[$0],newTime,newTime/a[$0];gs+=log(newTime/a[$0]);gc++}END{if(gc>0)print "Geometric mean,,",exp(gs/gc)}' "$OLDCSV" "$NEWCSV" > "$OLDVSNEWCSV" && \
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awk 'BEGIN{FS=",";OFS=",";print "Name,'"$OLD"','"$NEW"',Ratio"}FNR==1{trueNF=NF;next}NF<trueNF{print "Benchmark names should not contain newlines";exit 1}FNR==NR{oldTime=$(NF-trueNF+2);NF-=trueNF-1;a[$0]=oldTime;next}{newTime=$(NF-trueNF+2);NF-=trueNF-1;if(a[$0]){print $0,a[$0],newTime,newTime/a[$0];gs+=log(newTime/a[$0]);gc++}}END{if(gc>0)print "Geometric mean,,",exp(gs/gc)}' "$OLDCSV" "$NEWCSV" > "$OLDVSNEWCSV" && \
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trap - INT
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trap - INT
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}
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}
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@ -451,7 +451,7 @@ package to focus on rerunning failing items only.
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If you wish to compare two CSV reports non-interactively, here is a
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If you wish to compare two CSV reports non-interactively, here is a
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handy @awk@ incantation:
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handy @awk@ incantation:
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> awk 'BEGIN{FS=",";OFS=",";print "Name,Old,New,Ratio"}FNR==1{trueNF=NF;next}NF<trueNF{print "Benchmark names should not contain newlines";exit 1}FNR==NR{oldTime=$(NF-trueNF+2);NF-=trueNF-1;a[$0]=oldTime;next}{newTime=$(NF-trueNF+2);NF-=trueNF-1;print $0,a[$0],newTime,newTime/a[$0];gs+=log(newTime/a[$0]);gc++}END{if(gc>0)print "Geometric mean,,",exp(gs/gc)}' old.csv new.csv
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> awk 'BEGIN{FS=",";OFS=",";print "Name,Old,New,Ratio"}FNR==1{trueNF=NF;next}NF<trueNF{print "Benchmark names should not contain newlines";exit 1}FNR==NR{oldTime=$(NF-trueNF+2);NF-=trueNF-1;a[$0]=oldTime;next}{newTime=$(NF-trueNF+2);NF-=trueNF-1;if(a[$0]){print $0,a[$0],newTime,newTime/a[$0];gs+=log(newTime/a[$0]);gc++}}END{if(gc>0)print "Geometric mean,,",exp(gs/gc)}' old.csv new.csv
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A larger shell snippet to compare two @git@ commits can be found in
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A larger shell snippet to compare two @git@ commits can be found in
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@compare_benches.sh@.
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@compare_benches.sh@.
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