Not knowing about specifics, but "parsing the configs every hour" strikes me as a very bad idea. Parse only that which has changed. Find the least memory / cpu stressing way to access information when it's needed. Think diff(1). 
ERROR: CFG Error in "setenv[192.168.52.1_1]", line 18:  must be XY="dd
+dd" AASD="
kjlkj" ...

[download]

Far too little information to make an educated guess.

--shmem 

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

In reply to Re: Parsing a really, REALLY big MRTG config by shmem
in thread Parsing a really, REALLY big MRTG config by Hercynium

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