php daemon possible memory leak
daemon, memory-leaks, php
Solution
I got the same problem. Maybe the best idea is to report new bug at PEAR
BTW, code like that doesn't show that memleak:
#!/usr/bin/php -q
<?php
require_once "System/Daemon.php";
System_Daemon::setOption("appName", "smsd");
System_Daemon::start();
while(!System_Daemon::isDying()) {
print ("debug: memory_get_peak_usage: ".memory_get_peak_usage()."\n");
print ("debug: memory_get_usage: ".memory_get_usage()."\n\n");
System_Daemon::iterate(2);
}
Look's like System_Daemon::info() is a problem.
Problem
i've written a daemon in php and want to make sure it doesn't leak memory, as it'll be running 24/7. even in its simplest form memory_get_peak_usage for a daemon will report that the script consumes more memory for each cycle. memory_get_usage on the other hand will not grow. the question is: should i worry? i've stripped down the daemon to the bare basics but this is still happening. any thoughts? ``` #!/usr/bin/php -q <?php require_once "System/Daemon.php"; System_Daemon::setOption("appName", "smsd"); System_Daemon::start(); while(!System_Daemon::isDying()){ System_Daemon::info("debug: memory_get_peak_usage: ".memory_get_peak_usage()); System_Daemon::info("debug: memory_get_usage: ".memory_get_usage()); System_Daemon::iterate(2); } ``` FINAL NOTE + CONCLUSION: i ended up writing my own daemon wrapper, not using pear's system_daemon. regardless of how i tweaked this library i could not stop it from leaking memory. hope this helps someone else. FINAL NOTE + CONCLUSION 2: my script has been in production for over a week and is still not leaking 1 bytes of memory. so - writing a daemon in php actually seems to be ok, as long as you're very careful about its memory consumtion.