RE: What is the difference between Montavista Kernel SourceandKernel.Org Source
From: Ming Liu [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: RE: What is the difference between Montavista Kernel SourceandKernel.Org Source Date: Sun, 18 Feb 2007 13:54:13 + In fact, I have a same question. I also want to know what's the most obvious difference between Mvista and the common kernel. In detail, is there any different mechanism for Montavista to make sure a better performance, like Ethernet? In my project, it generates a different ethernet performance for my general kernel from Montavista 4.01. I want to make sure if Montavista have something special to guarantee a higher performance. Another question. Because Montavista kernel is also based on the open source linux kernel from the general tree, does this mean that the Montavista one is also open source and could be free to be distributed according to GPL. However as far as I know, that's not true. :) BR Ming I have worked with MontaVista Pro 3.1 (2.4.20 MontaVista Linux Kernel) and the main (significant) differences that I saw between MontaVista and say the ELDK 2.4.25 kernel were: 1. PREEMPTION PATCH was included in MontaVista 3.1 2. MontaVista's MMU, scheduling, and forking code was different than the main stream. It had some patches added in. 3. There was quite a bit of difference between the asm-ppc trees (i.e many places with board specific #define differences ) 4. Between the 2.4.20 MontaVista and the 2.4.25 ELDK, obvious driver improvements and kernel improvements had been added in, but I attribute that mostly to the jump from 2.4.20 to 2.4.25. I had problems with the MontaVista kernel where processes were randomly crashing because of SIGSEGV or SIGFPEs. I couldn't find any info on the internet and didn't have time to debug the kernel. I eventually switched to the ELDK 2.4.25 kernel and all my random crashing problems disappeared... and I don't really see huge performance differences (IN MY SPECIFIC APPLICATION) without the kernel PREEMPTION. _ Play Flexicon: the crossword game that feeds your brain. PLAY now for FREE. http://zone.msn.com/en/flexicon/default.htm?icid=flexicon_hmtagline ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
RE: What is the difference between Montavista Kernel SourceandKernel.Org Source
Dear Eric, Thanks for your reply first. Another question. Because Montavista kernel is also based on the open source linux kernel from the general tree, does this mean that the Montavista one is also open source and could be free to be distributed according to GPL. However as far as I know, that's not true. :) Because you have worked for Montavista Linux, so could you please answer me this question? I know that anyone can distribute and modify GPL source code and then the modified code also obey GPL. So how about Montavista Linux? :) I am just a little confused with this rule. BR Ming _ 免费下载 MSN Explorer: http://explorer.msn.com/lccn/ ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
RE: What is the difference between Montavista Kernel SourceandKernel.Org Source
From: Ming Liu [EMAIL PROTECTED] To: [EMAIL PROTECTED] CC: linuxppc-embedded@ozlabs.org Subject: RE: What is the difference between Montavista Kernel SourceandKernel.Org Source Date: Sun, 18 Feb 2007 16:25:55 + Dear Eric, Thanks for your reply first. Another question. Because Montavista kernel is also based on the open source linux kernel from the general tree, does this mean that the Montavista one is also open source and could be free to be distributed according to GPL. However as far as I know, that's not true. :) Because you have worked for Montavista Linux, so could you please answer me this question? I know that anyone can distribute and modify GPL source code and then the modified code also obey GPL. So how about Montavista Linux? :) I am just a little confused with this rule. BR Ming I only used their product (purchased a license of their tools/product). I am not in a position to answer legal/licensing questions about MontaVista Linux. You should contact their sales department for information regarding this type of question. _ Find what you need at prices youll love. Compare products and save at MSN® Shopping. http://shopping.msn.com/default/shp/?ptnrid=37,ptnrdata=24102tcode=T001MSN20A0701 ___ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
