Limit the size of the caches to a sensible value.Ĭache hit rate does not improve meaningfully beyond a few million max-cache-entries, reducing the memory footprint reduces CPU cache misses. This can be raised using the ulimit command or via the LimitNOFILE unit directive when systemd is used.įreeBSD has a default limit that is high enough for even very heavy duty use. Linux by default restricts processes to 1024 file descriptors, which should suffice most of the time, but Solaris has a default limit of 256. To get the best out of the PowerDNS recursor, which is important if you are doing thousands of queries per second, please consider the following.Ī busy server may need hundreds of file descriptors on startup, and deals with spikes better if it has that many available later on. ![]() Conversion of old-style settings to YAML format.Cryptographic software and export control. ![]() Tuning Incoming TCP and Out-of-Order processing. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |