That's basically what I meant. While 80MIPS will do a heck of a lot under OS/390 or z/OS, when normally considering UNIX, it isn't all that much.
Unless of course, you consider that the processor is NOT doing I/O on a mainframe, or managing a memory mapped display, or ... well, you get the picture. Also, 390 instructions tend to do a whole lot more than say, PowerPC instructions. We are looking at a z800 with only IFL engines on it, and it looks like it will really meet our needs bigtime. Using software emulators like Flex or Hercules, we see acceptable performance on PC's, though the MIP ratings are very difficult to pin down. At 16MIPS of emulated speed, Linux is usable for 10 - 20 people (we have DASD on EMC and other high speed RAID devices, so your mileage may vary!) - we expect a 192MIP engine, even carved up with so/VM and a couple LPARS, will do quite nicely. :) -Paul ----- Original Message ----- From: "Post, Mark K" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, April 05, 2003 9:49 AM > Paul, > > That's the whole point. The GP on a 0A1 is 80 MIPS, not 192. An IFL that > gets added to the box would run at 192, but not the GP. > > > Mark Post > > -----Original Message----- > From: Paul Raulerson [mailto:[EMAIL PROTECTED] > Sent: Saturday, April 05, 2003 12:00 AM > To: [EMAIL PROTECTED] > Subject: > > > Hey Jim - is a 0A1 the crippled processor able to run z/OS? > Basically, while I am not disputing your expertise, I sure don't > follow your logic. > > I *know* that a 2.8mhz PC system running Linux will bog down, > even when connected to an EMC storage unit for DASD, a whole > lot faster than a z800 will. :) > > 192 mainframe MIPS goes a LONG way. > > ----- Original Message ----- > From: "Jim Elliott" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Friday, April 04, 2003 1:55 PM > > > > From: "Noll, Ralph" <[EMAIL PROTECTED]> > > Subject: Re: performance > > > > > the performance of linux on s390 doesn't seem to be as fast as an x86 > > > box > > > > > i am using suse sles8 31 bit for s/390 on a z/800 0a1 running vm 4.3 > > > with 2 vse's and 6 linux instances when i do the ind command.. > > > following.. doesn't look busy > > > > Ralph: > > > > A z800-0A1 is equivalent (in pure compute power) to a 280MHz Intel > > system. Don't forget, this is the second smallest system IBM sells > > today in the zSeries family. > > > > Regards, Jim > > >
