------------ Original Message ------------ > Date: Sunday, June 21, 2015 12:22:28 AM +0200 > From: Anatol Belski <anatol.php@xxxxxxxxxx> > > Hi Frank, > >> -----Original Message----- >> From: Frank Arensmeier [mailto:farensmeier@xxxxxxxxx] >> Sent: Sunday, June 21, 2015 12:05 AM >> >> Hi List! >> >> I am working on a CLI script (PHP 5.5.25) that parses and imports >> large amounts of data into a database. Usually, the script runs >> for 5-15 minutes. For the most part, the script is working just >> fine. But for some reason, it seems to hit some limit and PHP >> crashes with a segmentation fault. I managed to hook GDB to >> the PHP process and got a backtrace. Unfortunately, I am not so >> much wiser than before. >> >> Can someone be so kind and point me into the right direction and >> give me a hint why PHP crashes? The backtrace: >> >> Program received signal EXC_BAD_ACCESS, Could not access memory. >> Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000018 >> 0x000000010e8f416f in zend_signal_handler_unblock () >> (gdb) bt >> # 0 0x000000010e8f416f in zend_signal_handler_unblock () >> # 1 0x000000010e8b47d5 in _zend_mm_alloc_int () >> # 2 0x000000010e884cd4 in vspprintf () >> # 3 0x000000010f5e112f in xdebug_error_cb () >> # 4 0x000000010e8d5875 in zend_error () >> # 5 0x000000010e8f4121 in zend_signal_handler () >> # 6 0x000000010e8f3fae in zend_signal_handler_defer () >> # 7 <signal handler called> >> # 8 0x00007fff855fce9a in write$NOCANCEL () >> # 9 0x00007fff8fae8970 in _swrite () >> # 10 0x00007fff8fae15e9 in __sflush () >> [.] >> >> I have already tried to give PHP more memory (512MB) but that had >> no impact on the segmentation fault. Any ideas? >> > You can try to disable xdebug and see what happens. > > Regards > > Anatol Are you trying to read in a whole data set, process it and then spit it out or are you reading it incrementally (by line or defined chunk)? Based on what you said, I suspect the former -- the whole data set. In general, reading/writing incrementally (if possible) will keep you from running into resource (e.g., memory) limits and is a more robust long-term approach as increases in the input data set size are less likely to cause unexpected processing changes (e.g., resource limit issues) over time. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
