• 实际大小体系结构相关的。

    The actual page size is architecture dependent.

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  • dbspace使用默认大小

    The root dbspace is the default page size.

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  • DB 2支持多种大小

    DB2 supports multiple page sizes.

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  • 大小4KB

    The page size is always 4 KB.

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  • 获取纸张其他介质大小名称

    Gets the name of the page size for paper or other media.

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  • 压缩使用多大大小

    What compressed page size to use.

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  • 注意缓冲空间大小8K,两者是相同的。

    Note that the page sizes of 8K for the buffer pool and table space are the same.

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  • 不能分割到不同的因此具有长行需要有合适大小

    Rows cannot be split between pages, so tables with long rows require the appropriate page size.

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  • 而在其他平台上缓冲大小250个大小4k

    For other platforms, the buffer pool size is 250 pages with a 4k pagesize.

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  • 默认大小创建数据库决定可以481632K

    The default page size is determined at database creation time and can be 4, 8, 16 or 32k.

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  • 对于每个不同大小表空间应该存在一个页大小相匹配缓冲

    For every different page size tablespace, there should be a matching page size buffer pool.

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  • 大小(PAGESIZE):目录空间指定大小4 KB。

    PAGESIZE: a 4 KB-page size is specified for the catalog tablespace.

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  • 如果通常顺序访问大量(该表可能进行了群集),那么比较大的大小会更有效。

    If typically more rows are accessed sequentially (maybe the table is clustered), then the larger page size is more efficient.

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  • 某些形状扩展到了绘图边界是否大小调整到恰好容纳内容

    Some shapes extend beyond the edge of the drawing page. Do you wish to resize the page to tightly fit the contents?

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  • (注意这个系统大小4K因此一个8的预读取为32 K)。

    Note that page size on this system was 4 K, so an eight-page read-ahead was 32 K.

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  • 如果一些具有不同大小空间那么每种大小必须至少一个缓冲

    If there are table Spaces with different page sizes, there must be at least one buffer pool per page size.

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  • 2.6内核中支持两种虚拟大小传统4K b大小以及16MB页大小

    In the 2.6 kernel, there will be support for two virtual page sizes: the traditional 4kb page size and the 16mb page size.

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  • 可以使用新增BUFFER POOL配置参数创建dbspace大小对应缓冲

    You can also use the new BUFFERPOOL configuration parameter to create a buffer pool that corresponds to the page size of the dbspace.

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  • 如果希望指定大小,指定必须默认页大小整数倍,而且不能超过16KB

    If you want to specify a page size, the size must be an integral multiple of the default page size, not greater than 16 kilobytes.

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  • 磁盘读取相像大小数据内存应用大的大小运用小的页大小耗费工夫更少

    Transferring the same amount of data from disk to memory often requires less time with larger pages than with smaller pages.

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  • 如果某个行的大小大于大小(大于2KB),那么包含该行可能置换内存

    If a row is larger than a page (that is larger than 2 KB), then the page containing that row might be kicked out of memory.

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  • 如果随机访问那么较小大小db2可以更好地利用缓冲区因为同样的存储区域可以容纳更多

    If rows are accessed randomly, then the smaller page size enables DB2 to make better use of the buffer, because more pages fit into the same storage area.

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  • 没有必要拥有多个具有相同大小临时空间通常只需个具有最大页大小的临时表空间就够了。

    There is no reason to have more than one temporary table space of the same page size, and usually one with the largest page size is sufficient.

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  • 如果可以放到具有较小空间中,或者可以充分利用较大的大小那么常用访问方法将确定一个更好

    If a table can either be placed into a smaller page size table space or fully utilize a larger page size, then the most frequent method of access determines which one is better.

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  • 可以使用新的BUFFER POOL配置参数或者onparams工具为dbspace所有特殊大小对应定义缓冲

    You can use the new BUFFERPOOL configuration parameter or the onparams utility to define a buffer pool for pages that correspond to each unique page size in use by your dbspaces.

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  • 内存可以更少实际来提供更多内存,相当于较小大小使用的大内存越多,就有越多的内存可以通过TLB引用

    Large pages can accommodate more memory in fewer actual pages, so as more large pages are used, more memory can be referenced through the TLB than with smaller page sizes.

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  • 假定前面使用大小4MB内存同样1 GB内存只用256个条目可以映射而不需要262,144个。

    Assuming a large page size of 4 MB is used in the same example from above, that same 1 GB of memory could be mapped with only 256 page-table entries instead of 262,144.

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  • 但是如果总的缓冲区大小并且没有足够的存储器可用分配给它们,那么将每种大小分配最少缓冲性能会急剧下降

    However, if the total buffer size is too large, and there is not enough storage to allocate them, a minimum system buffer pool for each page size is allocated, and performance is sharply reduced.

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  • 为需要内存很多应用程序提供了(largepage)支持允许使用16MB大小同时支持传统4K b页大小

    Large page support is provided for memory intensive applications, allowing 16mb page sizes while still providing the traditional 4kb page sizes.

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  • 为需要内存很多应用程序提供了(largepage)支持允许使用16MB大小同时支持传统4K b页大小

    Large page support is provided for memory intensive applications, allowing 16mb page sizes while still providing the traditional 4kb page sizes.

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