Adrian, What little experience I've had patching kernels, and what I've read, has led me to the conclusion it's better to use a vanilla kernel.org version. Mandrake adds quite a few patches for their stock kernel, and it's possible adding more would cause conflicts. What I've been doing is loading the Mandrake stock .config file into xconfig as a starting point with generic kernels, and then customizing that for my hardware. I've wound up with my own .config file, which I use as my starting point on this box when I try a new kernel. It took many configurations in my learning curve to see what worked best with each kernel version- I've used 2.4.19, 2.4.20, 2.4.21pres, 2.4.21, and lots of 2.5.xx's. The 2.4.xx generally work out fine, but all 2.5.xx are still problematic, at least for me.
On your Hz question, I think yes, you need that patch to be able to utilize different values for that parameter. Apparently, the Mandrake multi-media kernel is the stock kernel with preemptive and low-latency patches applied, so that implies you might be able to apply the Hz ck patch to a stock MDK kernel, and get away with it. I guess the only way to find out is try it, and change the Hz line in make xconfig to 1000Hz, and see if it works. However, Con Kolivas definitely feels that problems might arise when trying to use his extra patches on a heavily patched kernel like MDK, and recommends the official kernel.org version. I personally like the MDK multimedia kernel over the stock MDK, and the vanilla ck3 patched kernel over the MDK multimedia- but that's only on my specific hardware. Your experience may be different. Robert C. On Saturday 28 June 2003 04:23, Adrian Golumbovici wrote: > Do the Mandrake kernels need that patch too in order to be able to use that > Hz thing, or is it included in the default kernel sources? If it needs the > patch, is there a Mandrake specific patch for kernel-2.4.21 or can we use > the patch in the link you posted without further troubles? > > Best regards, > Adrian > ----- Original Message ----- > From: "Robert Crawford" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Saturday, June 28, 2003 7:24 AM > Subject: Re: [expert] Re: New 2.4.21 Variable HZ question. > > > I found this page that gives pretty good explanations of the subject. > > Makes me > > > want to recompile and try 1000Hz. I did a google search for "variable Hz > > redhat" and it listed a few other good pages. > > > > http://kerneltrap.org/node.php?id=464 > > > > Robert > > > > On Saturday 28 June 2003 00:31, Joeb wrote: > > > On Fri, 27 Jun 2003 16:51:28 -0400 > > > Robert Crawford <[EMAIL PROTECTED]> wrote: > > > <snip> > > > > > > > I'd really > > > > be interested in learning about RedHat's thinking on this subject- > > > > can you point us to where you learned about this? I'm all for doing > > anything > > > > > to increase performance. > > > > > > That's my problem, I can't remember where I found it on the web! I > > > know > > it > > > > was back during the 8.0 days of Mandrake. I recall a post, that I > > thought > > > > was on one of the Mandrake lists, but I sure can't find it. The post > > > pointed to an article about increasing the HZ size and how it improved > > > response times for desktop users. It also stated that Redhat was doing > > > this with their kernels, which is why their i386 seemed so snappy > > compared > > > > to Mandrake and Suse. The downside was something about timings being > > off > > > > for some tools because the items in /proc weren't aware that the HZ had > > > been changed. It was my understanding with Redhat 9, they continued > > this > > > > practice of changing the HZ but also modified the tools that calculate > > the > > > > various things in /proc. > > > > > > I'm sorry I don't have more information, but I have long since given up > > > finding the original article. It seems Google wants to return 50,000+ > > hits > > > > everytime I try and after a few hundred, I give up. > > > > > > If I ever find my hard copy, I'll type it back in to the list. > > > > > > Joeb > > > > > > p.s. It's also my understanding that the 2.5/2.6 kernel has increased > > this > > > > setting. > > --------------------------------------------------------------------------- >- ---- > > > Want to buy your Pack or Services from MandrakeSoft? > > Go to http://www.mandrakestore.com
Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com
