Fix perf stat parser

analyze/memcached_conn_scan.py

@@ -12,7 +12,7 @@ def parse_memcached_output(s):
 def parse_perf_stat(s):
     lines = s.split('\n')
     llc_misses_u = int(list(filter(None, lines[5].split(' ')))[0].replace(',', ''))
-    llc_misses_k = int(list(filter(None, lines[5].split(' ')))[0].replace(',', ''))
+    llc_misses_k = int(list(filter(None, lines[6].split(' ')))[0].replace(',', ''))
     return llc_misses_u + llc_misses_k
 
 def extract_conn_qps_exp(exp):