On Thu, Aug 8, 2019 at 12:26 PM Warner Losh <i...@bsdimp.com> wrote: > > > On Thu, Aug 8, 2019 at 12:20 PM ben via cctalk <cctalk@classiccmp.org> > wrote: > >> On 8/8/2019 7:59 AM, Huw Davies via cctalk wrote: >> > >> > >> >> On 8 Aug 2019, at 15:18, Adam Thornton via cctalk < >> cctalk@classiccmp.org> wrote: >> >> >> >> https://mvsevm.fsf.net >> >> >> >> Currently, the TOPS-10 guest account (42,42) and the Unix v7 account >> dmr have no passwords. >> > >> > Just logged into TOPS-10 for the first time in many years! Far too much >> brain bit rot but it will encourage me to build up my own RPi emulation >> setup! >> > >> > Thanks. >> Does the PI in use have good media storage device? >> I suspect TOPS and UNIX swap pages like mad. A little SD card might wear >> out in few weeks. >> > > Even the crappiest of crap SD cards these days aren't that fragile. You'd > need to swap on the order of GB/s to wear it out that fast. Most of the SD > cards can handle hundreds of full drive writes. At 128GB, you're looking at > needing to generate about ~25TB of effective writes before you'd wear them > out. Even with a crazy 10x write amp (typical is 2-3), there's no way you'd > get that through an interface that's measured in the tens of MB/s. >
Although to be fair, 50MB/s for 5 days would generate that. I doubt these old emulated systems could generate that much write traffic via SIMH on a sustained basis. And if the SD card is any good at all, it will be at least 10x better than that.... Assuming anything decent, and a 5MB/s write rate, you're looking at years to wear it out with extremely heavy use. Warner
