Fix LLC misses per request calculation

analyze/memcached_conn_scan.py

@@ -24,7 +24,7 @@ def extract_conn_qps_exp(exp):
             ret[1].append(qps)
 
         with open(os.path.join('../data/', exp, 'stat_c%d.txt' % (f,)), 'r') as fi:
-            misses = parse_perf_stat(fi.read()) / qps
+            misses = parse_perf_stat(fi.read()) / (qps * 30)
             ret[2].append(misses)
 
     return ret