2016-04-19 1:04 GMT-04:00 Ravi Chandra Suryavanshi < ravi.chandra.suryavan...@ericsson.com>:
> Hi, > I am using tomcat 6 in my product. I am planning to upgrade to tomcat 8 as > tomcat is going to EoS in Dec-2016. > I have just taken the performance of Tomcat 8 and found the 70% less > performance compared to tomcat 6. See the below results Tomcat 6 is giving > 167473.2/s whereas tomcat 8 is giving 100436.6/s > I have just compared with two standalone tomcat which is just hitting the > HelloWorld servlet available in example. > > Kindly let me know what need to configure to boost the performance. > > Following are my setup: > Java=Java 8 > HttpClient=HttpClient4 > Benchmark tool=jmeter > > testserver:~# uname -a > Linux testserver 3.10.0-229.el7.x86_64 #1 SMP Thu Jan 29 18:37:38 EST 2015 > x86_64 x86_64 x86_64 GNU/Linux > > > > testserver:~# lscpu > Architecture: x86_64 > CPU op-mode(s): 32-bit, 64-bit > Byte Order: Little Endian > CPU(s): 32 > On-line CPU(s) list: 0-31 > Thread(s) per core: 2 > Core(s) per socket: 8 > Socket(s): 2 > NUMA node(s): 2 > Vendor ID: GenuineIntel > CPU family: 6 > Model: 63 > Model name: Intel(R) Xeon(R) CPU E5-2640 v3 @ 2.60GHz > Stepping: 2 > CPU MHz: 2600.000 > BogoMIPS: 5210.53 > Virtualization: VT-x > L1d cache: 32K > L1i cache: 32K > L2 cache: 256K > L3 cache: 20480K > NUMA node0 CPU(s): 0-7,16-23 > NUMA node1 CPU(s): 8-15,24-31 > > testserver:~# vmstat -s > 131730840 K total memory > 5931052 K used memory > 7126352 K active memory > 5511616 K inactive memory > 116069376 K free memory > 20888 K buffer memory > 9709520 K swap cache > 11681788 K total swap > 0 K used swap > 11681788 K free swap > 54069797 non-nice user cpu ticks > 997 nice user cpu ticks > 9712353 system cpu ticks > 15112937897 idle cpu ticks > 37101 IO-wait cpu ticks > 73 IRQ cpu ticks > 21245 softirq cpu ticks > 0 stolen cpu ticks > 8918100 pages paged in > 267868897 pages paged out > 0 pages swapped in > 0 pages swapped out > 4281536287 interrupts > 4185543972 CPU context switches > 1456296771 boot time > 84815522 forks > > > > Tomcat 6 performance > > Linux 3.10.0-229.el7.x86_64 (testserver) 04/19/2016 _x86_64_ > (32 CPU) > 05:36:33 PM CPU %user %nice %system %iowait %steal > %idle > 05:36:38 PM all 37.66 0.00 14.69 0.10 0.00 > 47.55 > 05:36:43 PM all 37.61 0.00 14.50 0.01 0.00 > 47.89 > 05:36:48 PM all 38.31 0.00 14.48 0.03 0.00 > 47.19 > 05:36:53 PM all 37.45 0.00 14.53 0.01 0.00 > 48.01 > 05:36:58 PM all 37.97 0.00 14.67 0.02 0.00 > 47.34 > 05:37:03 PM all 37.68 0.00 14.62 0.01 0.00 > 47.69 > > Created the tree successfully using HTTPRequest.jmx > Starting the test @ Wed Apr 13 17:34:58 CEST 2016 (1460561698701) > Waiting for possible shutdown message on port 4445 > summary + 16181 in 1.3s = 12893.2/s Avg: 0 Min: 0 Max: 67 > Err: 0 (0.00%) Active: 3 Started: 3 Finished: 0 > summary + 5187350 in 30s = 172911.7/s Avg: 0 Min: 0 Max: 31 > Err: 0 (0.00%) Active: 24 Started: 24 Finished: 0 > summary = 5203531 in 31.3s = 166486.4/s Avg: 0 Min: 0 Max: 67 > Err: 0 (0.00%) > summary + 5207210 in 30s = 173573.7/s Avg: 0 Min: 0 Max: 26 > Err: 0 (0.00%) Active: 24 Started: 24 Finished: 0 > summary = 10410741 in 61.3s = 169957.4/s Avg: 0 Min: 0 Max: 67 > Err: 0 (0.00%) > summary + 5039715 in 30s = 167990.5/s Avg: 0 Min: 0 Max: 13 > Err: 0 (0.00%) Active: 24 Started: 24 Finished: 0 > summary = 15450456 in 91.3s = 169310.8/s Avg: 0 Min: 0 Max: 67 > Err: 0 (0.00%) > summary + 5024196 in 30s = 167473.2/s Avg: 0 Min: 0 Max: 22 > Err: 0 (0.00%) Active: 24 Started: 24 Finished: 0 > summary = 20474652 in 121s = 168856.1/s Avg: 0 Min: 0 Max: 67 > Err: 0 (0.00%) > > > > -------------------------------------------------------------------------------------------------------------------------------------------------------------- > tomcat 8 > > Linux 3.10.0-229.el7.x86_64 (testserver) 04/19/2016 _x86_64_ > (32 CPU) > > 06:14:36 PM CPU %user %nice %system %iowait %steal > %idle > 06:14:41 PM all 24.10 0.00 9.39 0.01 0.00 > 66.51 > 06:14:46 PM all 24.62 0.00 9.25 0.00 0.00 > 66.13 > 06:14:51 PM all 24.66 0.00 9.12 0.01 0.00 > 66.22 > 06:14:56 PM all 23.96 0.00 9.36 0.08 0.00 > 66.60 > 06:15:01 PM all 24.78 0.00 9.52 0.01 0.00 > 65.69 > 06:15:06 PM all 23.86 0.00 9.24 0.03 0.00 > 66.87 > > > > > > Created the tree successfully using HTTPRequest.jmx > Starting the test @ Wed Apr 13 18:12:41 CEST 2016 (1460563961583) > Waiting for possible shutdown message on port 4445 > summary + 1600892 in 18.4s = 87104.4/s Avg: 0 Min: 0 Max: 1040 > Err: 0 (0.00%) Active: 24 Started: 24 Finished: 0 > summary + 3102671 in 30s = 103422.4/s Avg: 0 Min: 0 Max: 9 > Err: 0 (0.00%) Active: 24 Started: 24 Finished: 0 > summary = 4703563 in 48.4s = 97223.2/s Avg: 0 Min: 0 Max: 1040 > Err: 0 (0.00%) > summary + 3090174 in 30s = 103005.8/s Avg: 0 Min: 0 Max: 9 > Err: 0 (0.00%) Active: 24 Started: 24 Finished: 0 > summary = 7793737 in 78.4s = 99436.5/s Avg: 0 Min: 0 Max: 1040 > Err: 0 (0.00%) > summary + 3091476 in 30s = 103049.2/s Avg: 0 Min: 0 Max: 10 > Err: 0 (0.00%) Active: 24 Started: 24 Finished: 0 > summary = 10885213 in 108s = 100436.6/s Avg: 0 Min: 0 Max: 1040 > Err: 0 (0.00%) > > Regards, > Ravi > > What is strange is you are also getting significantly less CPU usage with Tomcat 8. It is like there is a limitation which has nothing to do with the capacity of your server. Like you have limited the number of transactions/sec or something like that.
