I used to use the setting above with only 500MB in our server. But we got this upgrade to 1GB of RAM. The config above handled 1 or 2 days of uptime, with some latency at the rush hour. So, I thought it would be nice to "tune up" our server in order to use the additional memory better.
So I tried the config bellow. The app runned smoothly and fast with this new configuration, but crashed after 8h of up time. Generating out of memory errors.