-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Kyle,
On 9/5/12 9:59 PM, kharp...@oreillyauto.com wrote: > Alright, I did some more testing with another application and found > the following: > > Sess Time (sec 10 0.101 125 0.101 500 0.201 1500 0.201 > 1800 > 0.101 2400 0.101 42,000 0.901 (that's not a typo) Good to know that Tomcat itself does not seem to be the problem: thanks for the report. One question: > After further research, the problem we're seeing is performance > with replication when the number of sessions is larger than around > 2000. Using Jmeter on our test servers I can reproduce the > problem. Here are the times it takes to replicate X number of > sessions when an application is restarted: Sess Time (sec) 10 > 0.101 125 0.401 500 1.302 1500 2.104 > 1800 5.308 1800 > 6.709 2400 15.02 3600 30.285 3600 27.238 > > The times make sense until around 1500. The time it takes to > replicate more than 1500 sessions becomes exponentially worse. Plot those as X-Y in a spreadsheet and you'll see that it's only a bit worse than linear, especially after 1500. There's no enough data presented to draw an "exponential performance curve" conclusion: you're going to need more data to see if this is worse than linear. Can you collect more data? I know that creating 42k sessions of 700MiB each is probably a .. challenge, but more data would certainly be helpful. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iEYEARECAAYFAlBIwxkACgkQ9CaO5/Lv0PCrxwCeLMDD9Zx7PW6sdhnF+K+ONP79 HP0AoLfdb6NTm8xGHRimYqdqap1oQKTX =x6Z6 -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
