Ulrich David wrote: > Hi, > > Is there something to tune in the linux kernel in order too have > better performance on bind9 cache server? > > For example on the network part of the kernel? > > Just set the run_bind9_faster parameter to 1.
Seriously, Linux kernel tuning is a complex subject, about which many papers have been written and possibly even Ph.D.'s wrought. Not to mention, different traffic profiles and/or query mixes might require tuning of different kernel variables. Speaking in incredibly broad terms, named as a caching/recursive resolver is going to beat up your memory subsystem far more than your CPU number-crunching capacity or I/O. So the first place to look would be your paging and swapping metrics and/or parameters. Or, just throw more memory at it. named finds that very tasty. - Kevin
