Oracle T series platform file

Commands and Options Used to Submit Benchmark Runs

submit=echo 'pbind -b...' > dobmk; sh dobmk (SPEC tools, Unix shell)
When running multiple copies of benchmarks, the SPEC config file feature submit is often used to cause individual jobs to be bound to specific processors. If so, the specific command may be found in the config file; here is a brief guide to understanding that command:

Shell, Environment, and Other Software Settings

LD_LIBRARY_PATH controls the search order for both the compile-time and run-time linkers. Usually, it can be defaulted; but testers may sometimes choose to explicitly set it (as documented in the notes in the submission), in order to ensure that the correct versions of libraries are picked up.

MADV=access_lwp and
When the shared object is present in the LD_PRELOAD list, it is possible to provide advice to the system about how memory is likely to be accessed. The advice present in MADV applies to all processes and their descendants. A commonly used value is access_lwp, which means that when memory is allocated, the next process to touch it will be the primary user. Examples of other possible values include sequential, for memory that is used only once and then no longer needed and acces_many when many processes will be sharing data.

MPSSHEAP=<size>, MPSSSTACK=<size>, and
When these variables are set, the shared object will set the preferred page size for new processes, and their descendants, to the requested sizes for the heap and stack.

Operating System Tuning Parameters

Platform settings

One or more of the following settings may have been applied to the testbed. If so, the "Platform Notes" section of the report will say so; and you can read below to find out more about what these settings mean.

autoup=<n> (Unix /etc/system)
When the file system flush daemon fsflush runs, it writes to disk all modified file buffers that are more than n seconds old.

bufhwm=<n> (Unix /etc/system)
Sets the upper limit of the file system buffer cache. The units for bufhwm are in kilobytes.

cpu_bringup_set=<n> (Unix /etc/system)
Specifies which processors are enabled at boot time. <n> represents a bitmap of the processors to be brought online.

segmap_percent=<n> (Unix /etc/system)
This value controls the size of the segmap cache as a percent of total memory. Set this value to help keep the file system cache from consuming memory unnecessarily.

STACKSIZE=<n> (Unix environment variable)
Set the size of the stack (temporary storage area) for each slave thread of a multithreaded program.

psrset -c <n> (Unix, superuser commands)
Creates a new processor set and displays the new processor set ID.

psrset -e <n> (Unix, superuser commands)
Executes a command (with optional arguments) in the specified processor set. The command process and any child processes are executed only by processors in the processor set.

svcadm disable webconsole (Unix, superuser commands)
Turns off the Sun Web Console, a browser-based interface that performs systems management. If it is enabled, system administrators can manage systems, devices and services from remote systems.

ts_dispatch_extended=<n> (Unix /etc/system)
Controls which dispatch table is loaded upon boot. A value of 1 loads the large system table, a value of 0 loads the regular system table.

tune_t_fsflushr=<n> (Unix /etc/system)
Controls the number of seconds between runs of the file system flush daemon, fsflush.