On Tue, 15 Nov 2005, Carsten Otte wrote: > shogunx wrote: > > On Tue, 15 Nov 2005, Carsten Otte wrote: > >>It *should* work as > >>far as I can tell, but be aware that you can run into nasty deadlocks once > >>you don't have a local swap disk: you'll need networking for paging/disk IO, > >>and once linux is hard out of memory networking is suspended until there is > >>memory available => deadlock. > > > > > > How would that be different than having swap on standard SAN housed > > DASD? Does ficon/escon not suspend under those conditions? > Our device driver infrastructure in the swap path is aware of that problem and > is able to do IO without the need for memory (preallocation of FICON channel > programs etc.). Same is true for SCSI subsystem. Thus, this deadlock cannot > arise with FICON/FCP.
I understand. Its using the TCP/IP stack that will cause the problem. > > >>Workaround could be to have a ramdisk or z/VM DCSS as swap target, or to go > >>to church once a week ;-). > > > > > > Ramdisk would probably do the job. I'll start by installing linux on the > > bare metal of the 9672. BTW, there are only 5 processors live on this > > particular 9672, I suppose I would have to pay to get the other 7 > > functional? > Ask your IBM sales representative about this, I am sure they can help you > here ;-). The funny thing is I do not have one of those. I purchased the machine from a military surplus auction. According to the info I have gathered, it was deployed in the pentagon as part of army.mil before I bought it. I paid a total of $4G including shipping for the 2 cabinet gen5 9672 and 2 sharks. Notwithstanding, the only way I could afford to speak to a sales rep about this would probably be speak to a HR department person first, and hope skilled linux geeks are in demand at IBM;) I would first have to abandon my mom and pop business to do so, however... Scott > -- > > Carsten Otte > IBM Linux technology center > ARCH=s390 > sleekfreak pirate broadcast http://sleekfreak.ath.cx:81/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
