>>> On 2/2/2016 at 05:45 AM, Philipp Kern <pk...@debian.org> wrote: > On 2016-02-01 19:18, Eduardo Oliveira wrote: >> Also the amount of memory required to run equivalent work is normally >> less on >> the z Systems than the aggregated memory from the x86 systems. > > What is this based upon? I can see that if you go to exploit some z > technology very deeply (DCSS, XIP, etc), which might impact your ability > to admin the system. (Not saying in a bad way, but different from what > people are used to on x86.) But is there any other significant > technology that'd save memory? Both are 64bit, although x86 has more > historical baggage around.
It's based on the fact that the mainframe can do a _lot_ of I/O with very little impact on performance, for a lot of workloads. Distributed systems tend to be built with lots and lots of RAM to avoid any I/O. Many of them have far more memory than needed to avoid that I/O. Mark Post ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
