> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Kuredjian, Michael > Sent: Thursday, July 20, 2006 9:59 AM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: Why is zSeries so CPU poor? > > > How do we know the number of hardware design errors? With > IA32, it's easier to discover these problems because the CPU > is used by many people under many operating systems. IBM > designs the OS and CPU, making it much easier to cover up any > problems that do exist.
It depends on where the error is. If it is in some of the more exotic instructions or facilities not normally used by a standard application program, then you are likely correct. If the problem is that UNPK is "broken", then everybody will notice. This was proven in the original CMOS processor where the mantra was "don't use packed decimal, it performs very slowly!" due to the fact that most of the packed decimal instructions went from hardware to millicode. -- John McKown Senior Systems Programmer HealthMarkets Keeping the Promise of Affordable Coverage Administrative Services Group Information Technology This message (including any attachments) contains confidential information intended for a specific individual and purpose, and its content is protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this transmission, or taking any action based on it, is strictly prohibited. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
