В Release Notes написано:

IEEE 8-byte Floating Point Support
Support has been added for IEEE 8-byte floating point (a.k.a. "double") values, making Caché
more attractive for calculation-intensive applications.
This enhancement includes:
• A new internal data type for both scalars and list members
• A new intrinsic function to cast a value to a double
• Assembler optimizations to enable Caché to take advantage of processor-specific floating
point instructions
• Object and SQL client enhancements to handle new server data types


Я пока не тестировал Cache' 5.2.

Можно скачать и попробовать!
Можно немного подождать, так как очень скоро появится Release Candidate!

Что касается сравнения производительности локальные переменные - глобалы, для больших переменных лучше использовать глобалы.

Полностью поддерживаю идею использовать профилировщик.
Вот еще материал на эту тему старая, но интересная презентация: Мониторинг и оптимизация производительности .


Вадим

1. CACHETEMP - находится в памяти, если достаточен размер кеша данных и программ.
Соответственно, работает все очень быстро!
Вот фрагмент документации:

Temporary Globals

For certain operations, you may need the power of globals without requiring persistence. For example, you may want to use a global to sort some data which you do not need to store to disk. For these operations, Caché provides temporary globals.
Temporary globals have the following characteristics:

*
Temporary globals are stored within the CACHETEMP database, which is always defined to be a local (that is, a non-network) database. All globals mapped to the CACHETEMP database are treated as temporary globals.
*
Changes to temporary globals are not written to disk. Instead the changes are maintained within the in-memory buffer pool. A large temporary global may be written to disk if there is not sufficient space for it within the buffer pool.
*
For maximum efficiency, changes to temporary globals are not logged to a journal file.
*
Temporary globals are automatically deleted whenever the Caché system is restarted. (Note: it can be a very long time before a live system is restarted; so you should not count on this for cleaning up temporary globals.)

By default, Caché defines any global whose name starts with “CacheTemp” as being a temporary global. To avoid conflict with any temporary globals that Caché itself may use, you should start your temporary global names with “CacheTempUser”.
Caché SQL uses temporary globals as scratch space for optimizing complex queries. It may also uses temporary globals as temporary indices during the execution of certain queries (for sorting, grouping, calculating aggregates, etc.)


2. Информация по process-private globals появится в Cache' 5.2. RC
Support has been added for process-private globals. Like local variables, they are accessible
only by the process that creates them and are automatically deleted when that process halts.
However, like globals they are essentially unlimited in size.

3. BMC Patrol - старый продукт BMC.
BMC сейчас предлагает новую линейку продуктов.
С какими-то есть интеграция.
Если интересны детали - напишите, будем разбираться.

Советую обратить внимание на поддержку SNMP в Cache' 5.1.


Вадим