Please tell us where these values came from - we need to know the source of the values in the table.
vmstat is a system tool, prstat is a process/thread tool. vmstat will tell you how much memory is free from the kernel's perspective. prstat will tell you how much memory is being used per-process, but does not account for shared memory. Use "prstat -s rss" to sort processes by memory usage and determine how much physical memory is being used (RSS). You can not add these up for a total of how much memory is being used by all processes, because, as I said, shared segments are not accounted for. Run "pmap -x [PID]" per-process for a detailed view. What are you trying to figure out? What release of Solaris? /jim tanglinfu wrote: > When calculate and compare the memory usage when > a Application starts, with "prstat" and "vmstat". > > We found 384MB memory gap. > > Timing | Memory Used |Free Memory | > --------------------------+---------------+------------+ > Before start App 'A' | 1648MB | 1073MB | > --------------------------+---------------+------------+ > After start App 'A' | 2001MB | 336MB | > =========================================================== > Change |353MB increased|737MB decreased| > > > >From man page, seem prstat only reports active process statistics. > > Can any one advise where the 384 MB was used. > > Thanks in advance! > > > This message posted from opensolaris.org > _______________________________________________ > perf-discuss mailing list > perf-discuss@opensolaris.org > _______________________________________________ perf-discuss mailing list perf-discuss@opensolaris.org
