On 2017/06/15 10:21, Tinker wrote: > On 2017-06-15 08:50, Stuart Henderson wrote: > > On 2017/06/15 03:59, Tinker wrote: > > > Hi! > > > > > > About how usable and stable is ARM64 now, in particular Rockchip? > > > > > > Are we more at "happy if it boots & doesn't crash in 5 minutes and PCI > > > express is experimental", or might it survive with some load and for > > > long, a > > > good home router? > > > > > > What about PCIe and USB/XHCI? > > > > > > Thanks! > > > Tinker > > > > > > > I don't know about Rockchip in particular. With the Overdrive 1000 there > > are > > some segfaults in sh processes, which I hit in the configure script for > > ruby/python (need to re-attempt builds many times to get past that > > stage). > > And there are deadlocks relating to the vp pool when the machine is > > working > > hard. When I was doing package builds I was seeing it roughly every > > 12-48 > > hours (I have stopped these builds for now because with those problems > > progress is just too slow to be useful). > > Aha. Thanks for letting me know! > > Three brief followup Q:s if relevant, > > * Regarding stability, are kernel trace bug reports of crash occasions > possible & useful, or might it be so early that it's not in that game yet?
In my case I get deadlocks rather than kernel crashes. > * Any idea if there's PCI express or XHCI yet? On the Overdrive 1000 the lan-on-motherboard is connected by PCIe, so that works. No card connector though. > * The vp pool and other crashes, may those relate to the ARM platform's > weaker memory consistency model so memory read/write sync/barriers in the > kernel need to be tuned for that? (ARM32 is only singlecore while ARM64 is > SMP already.) There's some explanation from Mark's investigation into the problems with the vp pool at http://marc.info/?l=openbsd-tech&m=149207874802781&w=2 I don't recall reading of any ideas about the bin/sh segfaults yet.
