Just read this which clarified it for me: BTW, with overcommit_memory=2, CommitLimit = (MemTotal * (overcommit_ratio / 100)) + SwapFree With the default of overcommit_ratio = 50, this simplifies to: CommitLimit = (MemTotal / 2) + SwapFree Unless you're setting overcommit_ratio to 100, this means that with 640MB of RAM and no swap, user programs are allowed to request 320MB of memory at most. I hope this helps... > -----Original Message----- > From: kickstart-list-bounces@xxxxxxxxxx [mailto:kickstart-list- > bounces@xxxxxxxxxx] On Behalf Of Gerrard Geldenhuis > Sent: 11 January 2008 15:51 > To: squid@xxxxxxxxxx; Discussion list about Kickstart > Subject: RE: swap sizing in a kickstart script > > Hi > I don't completely understand it but you have to set your overcommit > ratio in the kernel to match you swap space > > Percentage of physical memory size to include in overcommit > calculations. > > Memory allocation limit = swapspace + physmem * (overcommit_ratio / 100) > > swapspace = total size of all swap areas > physmem = size of physical memory in system > > cat /proc/sys/vm/overcommit_ratio > > Unless I have the wrong end of the stick, then please correct me. > > I understood overcommit ratio to be the amount of swap space expected as > a ratio of the amount of ram but after reading up on it again I don't > think I understand it anymore. > > Apologies for complicating your answer. > > Regards > > > -----Original Message----- > > From: kickstart-list-bounces@xxxxxxxxxx [mailto:kickstart-list- > > bounces@xxxxxxxxxx] On Behalf Of Jimmy Stewpot > > Sent: 11 January 2008 15:39 > > To: squid@xxxxxxxxxx; Discussion list about Kickstart > > Subject: Re: swap sizing in a kickstart script > > > > Hi All, > > > > Jimmy Stewpot wrote: > > > Hello, > > > > > > Is there an automated way in the kickstart file for the system to > > > automatically create the "redhat recommended" swap size? > > > > > > Regards, > > > > > > Jimmy > > > > > > _______________________________________________ > > > Kickstart-list mailing list > > > Kickstart-list@xxxxxxxxxx > > > https://www.redhat.com/mailman/listinfo/kickstart-list > > > > It seems that there is a --recommended variable in the code which will > > do it. After seeing that I found it in the redhat documentation > > > > http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/en- > > US/RHEL510/Installation_Guide/s1-kickstart2-options.html > > > > Search for --recommended > > > > Regard > > _______________________________________________ > Kickstart-list mailing list > Kickstart-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/kickstart-list _______________________________________________ Kickstart-list mailing list Kickstart-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/kickstart-list
