I haven't tested zLinux<->z/OS, but a few months ago I did some testing with zLinux<->zLinux hipersockets and GBe with both ftp and NFS. I tried various z990 chpids:
CHP Frame MTU FA 16KB 8KB FB 24KB 16KB FC 40KB 32KB FD 64KB 64KB These tests were done during a time of close to zero other activity with the hipersocket subnets and the GBe subnets. Unfortunately, most of the results are gone, but I was not very impressed with either GBe or hipersockets. I tried many tests with different hipersocket chpids and found that the best hipersocket ftp performance was with Frame/MTU size of 16/8 and 24/16 of about 16 MB/sec. The best GBe time was about 10 MB/sec. I tried files with different block sizes (1K, 2K, 4K, 8K, 16K, 32K, 64K) and for both GBe and hipersockets, in general larger block sizes helped, but the difference wasn't significant. Tests with chpids FC and FD were dismally bad..not even 1MB/sec. Perhaps it was a config error on my part. I did some tests with NFS and the results were even more depressing. These simple tests involved doing a 'cp -fr' from 6GB of various sized files in a source file system on local disk to a target NFS mounted file system. With GBe, I never got better than 3 MB/sec. With hipersockets, I never got better than 5 MB/sec. Unlike the ftp tests, there were no significant performance differences between the different hipersocket chpids. In our production GBe network, the GBe performance numbers are way worse..more like 4 MB/sec for ftp and 2 MB/sec for NFS. We don't have major hipersocket network activity, so I don't know how the hipersocket numbers would change under load. We do not yet use hipersockets in production. Although hipersockets improved things in my tests, I was hoping for a much more dramatic improvement. I would be very interested in any sites that report really good performance with either GBe or hipersockets and what their configuration looks like. ..thanks "Lucius, Leland" wrote: > > > > > > > Maybe someone could try with NFS instead of FTP???? > > > > Is anyone running NFS over HiperSockets to z/OS??? > > > I tried that as well. Unfortunately, I can't remember (and didn't write > it down) the throughput. Let me see if I can get some #s real quick. > > Leland > > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- 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
