If that's correct Fabian, then maybe I should again try to import say a month's data, and then archive, and then import another month. Just had anothere weird one though - I set memory_limit to 8192M, verified that by checking the output of a phpinfo() page, but now archive.php fails and the apache error log shows:
PHP Fatal error: Allowed memory size of 167772160 bytes exhausted
which is 160M - that's a distance from 8192M. I reviewed the logs and sure enough, previously when I had it set to 1024M, it was failing with
PHP Fatal error: Allowed memory size of 1073741824 bytes exhausted
but why on earth it's failing now as above is beyond me.
Retrying now with memory_limit of 2048M . . .
PHP Fatal error: Allowed memory size of 167772160 bytes exhausted
which is 160M - that's a distance from 8192M. I reviewed the logs and sure enough, previously when I had it set to 1024M, it was failing with
PHP Fatal error: Allowed memory size of 1073741824 bytes exhausted
but why on earth it's failing now as above is beyond me.
Retrying now with memory_limit of 2048M . . .