In fact, there are 3 handles per (sub)domain, example:
/var/log/httpd/domains/xxxxxx.com.uuuuu.log
/var/log/httpd/domains/xxxxxx.com.uuuuu.error.log
/var/log/httpd/domains/xxxxxx.com.uuuuu.bytes
And in my case there were 6 (for port 80 and port 443).
The server in trouble has 512 MB, and I 've ordered 512 MB more, but I think I can do without it.
If necessary, I will remove the (per domain) error-log files and do the splitting in a separate process. But, again, I think it is a design error to open error_log-files if no errors are detected.
Anyone else who has SSL on without reason? Or is it just me being careless...