Units for Sybase Monitoring

[Rajeev]

Hi Guys,
Could any one help me on the following:
1) sp_monitorconfig "max memory" gives values for the following
Num_free
Num_active
What is the units used here? Are thes in bytes/kilobytes.
2) In Sybase MDA tables,
monDeviceIO table has the following columns:
-Reads
-Writes
-APFReads
Are these values bytes per second?
Total DiskIO = Reads+Writes+APFReads
Total Disk Reads = Reads
Total Disk Writes = Writes from this table, is this calculation
correct?
3) Is the following formula correct for calculating Cache Miss Ratio
select "Miss_Ratio (%)" = convert(numeric(10,1),
((m.PhysicalReads*1.0/m.CacheSearches*1.0))*100.0) from monDataCache m

4)Is the following formula correct for calculating total db size?
select sum(((d.high - d.low) + 1) * @@maxpagesize/1048576) as
totalsize from sysusages u, sysdevices d where u.vstart between
d.low and d.high

Appreciate your help. I have tried various options and couldn't find
any reliable source to clarify my queries.

Thanks,
Rajeev









Thanks,
Rajeev