Re: [gentoo-user] kernel tuning

2005-10-03 Thread Brett I. Holcomb
Thank you for the explanation. I missed that servers is what the OP is really interested in. I'll look at the scheduler options again. On Mon, 3 Oct 2005, Bastian Balthazar Bux wrote: Brett I. Holcomb wrote: Out of curiosity and so I can learn. Why did you suggest CONFIG_HZ be set to 100

Re: [gentoo-user] kernel tuning

2005-10-03 Thread Bastian Balthazar Bux
Brett I. Holcomb wrote: > Out of curiosity and so I can learn. Why did you suggest CONFIG_HZ be > set to 100 (IIRC default is 250) and also what exactly is it supposed to > do for you. We did not have it before. > In the past was fixed to 100Hz, then to 1000 appeared, now there is a third optio

Re: [gentoo-user] kernel tuning

2005-10-03 Thread Brett I. Holcomb
Out of curiosity and so I can learn. Why did you suggest CONFIG_HZ be set to 100 (IIRC default is 250) and also what exactly is it supposed to do for you. We did not have it before. Also what about CONFIG_PREMPT being none? The help mentions it is for low latency. Thanks. On Mon, 3 Oct 2

Re: [gentoo-user] kernel tuning

2005-10-03 Thread Bastian Balthazar Bux
John Jolet wrote: > On Saturday 01 October 2005 14:59, gentuxx wrote: > > >>>- Mark Shields >> >>IIRC, RedHat kernels are relatively generic in that they have almost >>everything turned on, and/or build the modules so that they can >>maximize the hardware compatibility. So it is likely that ther

Re: [gentoo-user] kernel tuning

2005-10-02 Thread John Jolet
On Saturday 01 October 2005 14:59, gentuxx wrote: > > - Mark Shields > > IIRC, RedHat kernels are relatively generic in that they have almost > everything turned on, and/or build the modules so that they can > maximize the hardware compatibility. So it is likely that there will > be tones of stuf

Re: [gentoo-user] kernel tuning

2005-10-01 Thread gentuxx
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Mark Shields wrote: > Sane defaults? Sounds a bit redundant to me. You will have to > tweak the kernel sources since your not using genkernel (my > experience with Redhat is minimal, I assume they use a type of > generic kernel?). There's no way aroun

Re: [gentoo-user] kernel tuning

2005-10-01 Thread Mark Shields
Sane defaults?  Sounds a bit redundant to me.  You will have to tweak the kernel sources since your not using genkernel (my experience with Redhat is minimal, I assume they use a type of generic kernel?).  There's no way around it.  Short story, if you want "sane defaults", stick with the genkernel

[gentoo-user] kernel tuning

2005-10-01 Thread John Jolet
I've got a farm of 32-bit redhat 7 web servers that we're about to start migrating to gentoo on amd64 servers. One question my boss had that I can't seem to answer is this. Redhat kernels are supposedly tuned for "sane defaults" and I've done no "tuning" at all on the gentoo boxes. Using gent