[jboss-jira] [JBoss JIRA] Closed: (JBCACHE-519) Investigate why tx has a higher thruput than non-tx under perf test

Investigate why tx has a higher thruput than non-tx under perf test -------------------------------------------------------------------- Key: JBCACHE-519 URL: http://jira.jboss.com/jira/browse/JBCACHE-519 Project: JBoss Cache Issue Type: Sub-task Security Level: Public(Everyone can see) Reporter: Ben Wang During the perf test, I have discovered that the throughput with tx is higher than the non-tx one. This is very puzzling. I have asked Scot Marlow to double check it for me. The same. Machines are: dev09 and dev17. Here are some breakdown numbers: 1. Single thread, 3000 loops, 10 ms sleep interval. (a) no tx ----- Total time spent (ms) per thread: 202921 for 3000 loops Throughtput for this node with: threads = 1 loops = 3000 sleep interval = 10 object list size = 100 tranasaction? false is: 14 requests/sec (b) tx ---- Total time spent (ms) per thread: 200718 for 3000 loops Throughtput for this node with: threads = 1 loops = 3000 sleep interval = 10 object list size = 100 tranasaction? true is: 14 requests/sec 2. 100 threads, 0ms sleep interval (a) no tx ----- Total time spent (ms) per thread: 49352 for 400 loops Throughtput for this node with: threads = 50 loops = 400 sleep interval = 0 object list size = 100 tranasaction? false is: 404 requests/sec ----- Total time spent (ms) per thread: 61240 for 400 loops Throughtput for this node with: threads = 50 loops = 400 sleep interval = 20 object list size = 100 tranasaction? false is: 325 requests/sec -------- dev04 Total time spent (ms) per thread: 78871 for 400 loops Throughtput for this node with: threads = 50 loops = 400 sleep interval = 20 object list size = 100 tranasaction? false is: 250 requests/sec (b) tx ----- Total time spent (ms) per thread: 68770 for 400 loops Throughtput for this node with: threads = 50 loops = 400 sleep interval = 0 object list size = 100 tranasaction? true is: 288 requests/sec ---- Total time spent (ms) per thread: 74575 for 400 loops Throughtput for this node with: threads = 50 loops = 400 sleep interval = 20 object list size = 100 tranasaction? true is: 263 requests/sec --- dev04 Total time spent (ms) per thread: 80648 for 400 loops Throughtput for this node with: threads = 50 loops = 400 sleep interval = 20 object list size = 100 tranasaction? true is: 242 requests/sec