hi all, I ran some tests with the 'dbench' benchmark from the samba project which simulates the disk i/o of the 'netbench' benchmark.
I use 2.4.16 with the acl-patches (ext2/3) on a 128MB RAM system under zVM and initially tested dbench simulating 10 clients with ext2, ext3 and reiserfs on a minidisk. We have a G5(single proc) server connected to our ESS (shark) with 4 ESCON Channels (...and I think our machine is only lightly loaded). With ext2 I got 20-23 MB/s in several runs and with ext3/reiserfs 10-13 MB/s. Now I wonder what the bottlenecks are supposed to be and what to do to tune this before I'll make some further testings?! RAM & CPU seem to be OK for this workload and I thought 4 ESCONs should be much faster. Any ideas? Regards simon -- simon fischer linux on zSeries - team becom informationssysteme gmbh - germany
