例如,假设由于测试系统上的内存约束,您无法获得大型的缓冲池,并且希望将大小配置得相同,实际上却不是真正有这么大。
For example, say that you cannot afford to have large buffer pools due to memory constraints on the test system and would like to configure the size the same without actually having them in reality.
对于DB2,系统主存的最大消耗者是它的缓冲池,这个缓冲池基本上是一个单独的、较大的共享内存区域。
For DB2, the largest consumer of system main memory is its buffer pool, which is basically a single, large Shared memory region.
当您配置新的缓冲池时,一定要理解它对系统可用内存的影响。
When you configure new buffer pools, make sure that you understand how it impacts the available memory of your system.
正确管理线程池非常重要,因为线程对于服务器中的内存使用量以及其他低级操作系统资源而言是相当珍贵的资源。
Proper management of the thread pools is important, because threads are fairly expensive resources in terms of memory consumption in the server, as well as other low-level operating system resources.
因为db2缓冲池是系统主内存的一部分,DB 2数据库管理器在它读取或写入磁盘介质时将它分配给缓存表和索引数据。
Since a DB2 buffer pool is a part of the main memory of the system, the DB2 database manager allocates it for caching tables and index data when it reads or writes to and from media disks.
对于大型OLTP数据库,在保持系统稳定的同时为缓冲池留出尽可能多的内存。
For for a large OLTP database, set aside as much as memory as possible for the buffer pool while keeping the system stable.
DB 2支持缓冲池共享内存区域使用底层系统上可用的所有页面大小(4KB、64KB、16 MB和16 GB)。
DB2 supports all the page sizes (4-kilobyte, 64-kilobyte, 16-megabyte, and 16-gigabyte) that are available with the underlying system for its buffer-pool-shared memory region.
在默认情况下,系统并不为大页面物理内存池分配任何内存。
By default, the system does not allocate any memory to the large page physical memory pool.
IBM称,通过将内存和处理器分离开来,系统将会利用到更大的内存池,有更好的扩展性,从而达到提升应用程序性能的目的。
By separating the memory and processor, systems will have access to a larger memory pool with better scalability which could help boost application performance, IBM said.
对大多数收集器实现而言,分配子系统持有一个自由堆内存池,应用程序通过分配对象使用该池,然后由收集器通过清理来补充该池。
For most collector implementations, the allocation subsystem keeps a pool of free heap memory, consumed by the application through allocating objects and replenished by the collector through sweeping.
如果系统内存不充裕,那么可以减少目标数据库中缓冲池的大小,因为DB 2LOAD实用程序不使用缓冲池。
If your system is constrained on memory, you can reduce the size of buffer pools in the target database because the DB2 LOAD utility does not use buffer pools.
受管理系统配置一个共享内存池,这个池有2GB的真实内存。
The managed system is configured with a Shared memory pool that has 2 GB of real memory assigned.
但是实际上,操作系统需要用这4GB内存的一部分处理映射和其他内存池,这是它运行的所有LotusDomino任务所需要的。
The operating system actually needs some of this 4 GB of memory for mapping and other memory pools for all the Lotus Domino tasks that it runs.
这里完全没有必要将64KB页面固定在内存中,AIX5l操作系统可以动态地移动4KB和64 KB页面大小的池之间的页面。
It is not necessary to pin the 64-kilobyte pages in memory and the AIX 5l operating system dynamically moves pages between 4-kilobyte and 64-kilobyte page-size pools.
这里完全没有必要将64KB页面固定在内存中,AIX5l操作系统可以动态地移动4KB和64 KB页面大小的池之间的页面。
It is not necessary to pin the 64-kilobyte pages in memory and the AIX 5l operating system dynamically moves pages between 4-kilobyte and 64-kilobyte page-size pools.
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