perf charts: fix min args requirement
perf charts: fix min args requirement

creative-quant/voltdb,creative-quant/voltdb,ingted/voltdb,ingted/voltdb,VoltDB/voltdb,flybird119/voltdb,migue/voltdb,flybird119/voltdb,deerwalk/voltdb,paulmartel/voltdb,deerwalk/voltdb,deerwalk/voltdb,paulmartel/voltdb,wolffcm/voltdb,migue/voltdb,paulmartel/voltdb,zuowang/voltdb,flybird119/voltdb,deerwalk/voltdb,deerwalk/voltdb,simonzhangsm/voltdb,flybird119/voltdb,simonzhangsm/voltdb,wolffcm/voltdb,VoltDB/voltdb,kumarrus/voltdb,flybird119/voltdb,wolffcm/voltdb,paulmartel/voltdb,kumarrus/voltdb,paulmartel/voltdb,simonzhangsm/voltdb,simonzhangsm/voltdb,zuowang/voltdb,deerwalk/voltdb,simonzhangsm/voltdb,kumarrus/voltdb,zuowang/voltdb,paulmartel/voltdb,creative-quant/voltdb,flybird119/voltdb,simonzhangsm/voltdb,wolffcm/voltdb,ingted/voltdb,zuowang/voltdb,flybird119/voltdb,paulmartel/voltdb,wolffcm/voltdb,migue/voltdb,migue/voltdb,creative-quant/voltdb,creative-quant/voltdb,kumarrus/voltdb,deerwalk/voltdb,wolffcm/voltdb,flybird119/voltdb,wolffcm/voltdb,ingted/voltdb,zuowang/voltdb,VoltDB/voltdb,creative-quant/voltdb,simonzhangsm/voltdb,ingted/voltdb,zuowang/voltdb,kumarrus/voltdb,paulmartel/voltdb,kumarrus/voltdb,ingted/voltdb,migue/voltdb,deerwalk/voltdb,kumarrus/voltdb,simonzhangsm/voltdb,creative-quant/voltdb,VoltDB/voltdb,VoltDB/voltdb,kumarrus/voltdb,zuowang/voltdb,migue/voltdb,ingted/voltdb,ingted/voltdb,zuowang/voltdb,wolffcm/voltdb,VoltDB/voltdb,creative-quant/voltdb,migue/voltdb,migue/voltdb,VoltDB/voltdb