On Thu, 13 Feb 2003, Jim Elliott wrote: > > and the time went from 1m3.6s to 1m2.039s in the better case, the > > people from ibm (they are here yet) can give me an answer about the > > poor performance (i consider that its a poor performance, because a > > intel piii 128Mb RAM make the tar in about 28s), so i really dont know > > if this is the real performance of linux under vm, if we are doing > > something wrong, or what, when we bought the z800 they said that with > > this configuration we will be able to run about 200 virtual machinnes, > > maybe thats a fairly dream? > > Alex: > > You have to remember that gzipping a file is a compute intensive > function. The z800 IFL is about 660 MHz (or close to that). You don't > specify the MHz for the Intel system. > > Also, when IBM talk about running 200 virtual machines did the specify > the workload? Where Linux on zSeries shines is running lots of LOW > utilization systems. We often see Windows file and print servers running > below 5% utilization. I have passed your note to the IBMer responsible > for Linux in Latin America to make sure the right resources are put on > your problem.
I really thank you for the help, we have some problems with the people at ibm (specifically with the comercialization team), but this is because a historically problem when they wen into problems with a part of the goverment (that was about 1998 i think), so they actually get very "hard" when they treat whith the Mexico city government, actually we have a project with them: migrate from a multiprise 2003 with os/390 2.6 to a z800 with vm/linux, today we have the z800 running both os/390 2.6, and z/vm, but you know that the situation in Mexico is different from the situation in other countries (economical, social, and of course technological), when i start working here (Mexico city government) in May 2002, my chief said to me: "we have a multiprise 2003, and we see that like a "black box", we want to migrate to another thing that we can manage better, with less TCO", at that point i was never been in front of a mainframe, it was my first contact with mainframe, i have 21 years now (im married, and with a baby in way), im working with linux since i have 15 years, so when the people from ibm told me about z/vm and linux in mainframe, we evaluated the offer and say yes, so now i have to migrate all the recaudation system from the Mexico city from os/390 to zvm/linux, we have no money to take courses, buy books, in resume, for anything. Now you get an idea of our situation? Ps. i really LOVE my work (with a "big toy" like a z800 sure i does) =-) > > Regards, Jim > -- Alejandro Leyva Rabinovich. Jefe de la Unidad Departamental de Soporte Ticnico (Administracisn de Mainframe). Direccisn General de Informatica. Secretarma de Finanzas. Gobierno del Distrito Federal.
