On Thu, 15 Nov 2018, at 17:25, Mark Pizzolato wrote:
> From what you've said here, not being a Xen user myself, it is not 100% clear > exactly what's running where. > > Is it: Ultrix on simh running on Debian Stretch running under Xen? > OR: Ultrix on simh running on Xen running under Debian Stretch? > OR: Something else...? Sorry if that wasn't clear. I have a Xen environment running with Debian Stretch in Dom0 and also in the DomU that has simh running. > > Without regard to that, if you: > 1) Stop the VMS instance running under your configuration > 2) Stop the Ultrix instance running under your configuration > 3) Change the Ultrix's configuration file to attach the VMS instance's > boot disk image > 4) Start simh with the otherwise unchanged Ultrix configuration > 5) Confirm that networking with the VMS OS running in the simh Ultrix > simulator is absolutely normal or if it exhibits issues similar to the > Ultrix OS's behavior. No change. network performance with VMS is as expected, performance with Ultrix is unusable. I can attach a pcap of a file transfer to the Ultrix system if it helps. As a further test, I installed NetBSD8/vax in simh on the same DomU I have Ultrix on and it doesn't exhibit any unusual issues with network performance. For reference, here is the show version MicroVAX 3900 simulator V4.0-0 Current Simulator Framework Capabilities: 64b data 64b addresses Threaded Ethernet Packet transports:PCAP:TAP:NAT:UDP Idle/Throttling support is available Virtual Hard Disk (VHD) support RAW disk and CD/DVD ROM support Asynchronous I/O support (Lock free asynchronous event queue) Asynchronous Clock support FrontPanel API Version 12 Host Platform: Compiler: GCC 4.2.1 Compatible Clang 3.8.1 (tags/RELEASE_381/final) Simulator Compiled as C arch: x64 (Release Build) on Nov 10 2018 at 16:37:50 Memory Access: Little Endian Memory Pointer Size: 64 bits Large File (>2GB) support SDL Video support: No Video Support RegEx support for EXPECT commands OS clock resolution: 1ms Time taken by msleep(1): 1ms OS: Linux ermine-xen 4.9.0-8-amd64 #1 SMP Debian 4.9.130-2 (2018-10-27) x86_64 GNU/Linux git commit id: acbea915 git commit time: 2018-11-10T04:34:43-0800 -Douglas _______________________________________________ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh