The values for the MSOSU column come from the field OUCBMSO in the IBM Resources Manager User Control Block (OUCB). SYSVIEW is just displaying whatever values it finds so it appears that the control block field is empty. This control block is owned by the System Resource Manager, so there might be something preventing that field from being populated in the control block (configuration option or something).
As for your question regarding the MIPS column, this column, along with the other columns on the display, show the values for the given data collection interval. So, it is NOT since SYSVIEW was started.