We see variability in running the xml.validation workload on some machines. For example these results:

51420.auto.log 306.06 xml.validation
51421.auto.log 362.29 xml.validation
51422.auto.log 1036.78 xml.validation
51423.auto.log 1031.04 xml.validation
51424.auto.log 175.87 xml.validation
51425.auto.log 1029.75 xml.validation
51426.auto.log 1028.60 xml.validation
51427.auto.log 1012.52 xml.validation
51429.auto.log 1042.44 xml.validation
51430.auto.log 1015.50 xml.validation
51431.auto.log 1024.63 xml.validation
51432.auto.log 1040.88 xml.validation
51433.auto.log 1047.75 xml.validation
51434.auto.log 1024.24 xml.validation
51435.auto.log 342.92 xml.validation
51436.auto.log 1023.79 xml.validation
51437.auto.log 1036.47 xml.validation
51438.auto.log 1041.16 xml.validation
51439.auto.log 1048.32 xml.validation
51440.auto.log 1024.52 xml.validation
51441.auto.log 342.56 xml.validation
51442.auto.log 1063.92 xml.validation
51443.auto.log 1027.27 xml.validation
51444.auto.log 1042.93 xml.validation
51445.auto.log 1042.38 xml.validation
51446.auto.log 1044.84 xml.validation
51447.auto.log 1044.75 xml.validation
51448.auto.log 1020.74 xml.validation
51449.auto.log 351.85 xml.validation
51450.auto.log 1056.70 xml.validation
51451.auto.log 1030.40 xml.validation
51452.auto.log 1055.20 xml.validation
51453.auto.log 1028.08 xml.validation
51454.auto.log 1058.68 xml.validation
51455.auto.log 1029.57 xml.validation
51456.auto.log 1032.61 xml.validation