WARNING: [pool www] seems busy

Hi
Checking on the logs i can see this:

Code:

WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 6 idle, and 64 total children

Is confusing me on what to increase exactly:

Code:

pm = dynamic
pm.max_children = 80
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers = 10
pm.min_spare_servers = 10
pm.max_spare_servers = 50
pm.max_requests = 9000

What do you recommend me?

Thanks

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3400 users per 20 minutes
IPB forum
server:

Code:

http://www.ovh.ie/dedicated_servers/enterprise/2014-SP-128.xml

 

The problem starts when the Google and Baidu crawlers are hit the forum and when i run mysqldump for backup the database