On 12/18/2013 6:11 PM, Christopher Schultz wrote:
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All,
I was recently discussing garbage collectors with a friend (yes, an
exciting conversation) and I was wondering what the folks in the
Tomcat community were using for their garbage collection needs.
I'd like to run an informal poll. Feel free to reply to just me
directly if you'd like to protect your reputation or not clog the list
or to the whole list if you'd prefer.
I know there are lots of lurkers on the list who rarely post and I'd
encourage them to reply as well even if they don't feel like they are
running anything of any importance.
So, here are my questions:
1. What JVM are you using?
[X ] Sun/Oracle/OpenJDK Java 1.5
...
2. What kind of web application are you running?
[ ] A toy, a research project, or something with virtually no use
[ ] A moderately busy web site (<1M requests/mo/server)
[ ] A moderately busy web site (<10M requests/mo/server)
[ ] A busy web site (10M - 100M requests/mo/server)
[X ] A super-busy web site
6-8M requests per day (very simple ones, though)
3. What is your total heap size?
512M (I think) for the busiest instance, less for less busy instances
4. Are you explicitly specifying a Garbage Collector? If not, just say
so and skip the rest of the questions.
No.
5. What led you to use [GC X] instead of the JVM's default collector?
6. Did you do any actual performance testing to see if the switch from
the default to [GC X] made any difference?
6. Have you spent a lot of time tuning [GC X]?
7. Did your tuning exercise yield any useful results?
8. Did your users notice any difference after you implemented [GC X],
or just your own load-testing team?
If you think there's anything else I should know about your experience
with [GC X], please let me know.
Thanks,
- -chris
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