There's a lot of parameters involved in disk I/O performance. Clearly, having ESCON attachment is a poor start compared to FICON. As soon as you move more data than fits in memory, you start to wait for the writes as well. If you're reading from a single logical volume that uses only a single ESCON path. Same for writing. Provided both file systems are on different S/390 devices, you should at least be able to do those in parallel. And for large amounts of data the disk subsystem also makes a difference. For rough guess, I would say 1 MB/s consistent throughput for a single virtual machine is a bit low, but I would not expect an order of magnitude more.
If you have a large virtual machine (e.g. > 1.5 GB) there may be other things to look at. Rob -- Rob van der Heij rvdheij @ gmail.com ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
