污网站视频在线观看,国产精品激情偷乱一区二区,caoporn超碰随时会被屏蔽,madou精品一区二区

VimIy微民網(wǎng),讓世界傾聽微民的聲音! 設(shè)為首頁 | 加入收藏 | 網(wǎng)站地圖
當(dāng)前位置:主頁 > 惡搞 >

BerkeleyDB的最大緩存設(shè)置問題。資深碼農(nóng)快幫忙

整理時(shí)間:2013-01-25 18:44 來源:m.99912.com.cn 作者:編輯 點(diǎn)擊:

【樓主】(18464942)2013-01-23 19:18

» BerkeleyDB的最大緩存設(shè)置問題。資深碼農(nóng)快幫忙
    有使用過的大牛來幫忙呀。
    
    其官網(wǎng)的介紹如下:
    
    
    Set the size of the shared memory buffer pool, that is, the size of the cache.
    
    The cache should be the size of the normal working data set of the application, with some small amount of additional memory for unusual situations. (Note: the working set is not the same as the number of pages accessed simultaneously, and is usually much larger.)
    
    The default cache size is 256KB, and may not be specified as less than 20KB. Any cache size less than 500MB is automatically increased by 25% to account for buffer pool overhead; cache sizes larger than 500MB are used as specified. The current maximum size of a single cache is 4GB. (All sizes are in powers-of-two, that is, 256KB is 2^18 not 256,000.)
    
    The database environment's cache size may also be set using the environment's DB_CONFIG file. The syntax of the entry in that file is a single line with the string "set_cachesize", one or more whitespace characters, and the cache size specified in three parts: the gigabytes of cache, the additional bytes of cache, and the number of caches, also separated by whitespace characters. For example, "set_cachesize 2 524288000 3" would create a 2.5GB logical cache, split between three physical caches. Because the DB_CONFIG file is read when the database environment is opened, it will silently overrule configuration done before that time.
    
    This method configures a database environment, including all threads of control accessing the database environment, not only the operations performed using a specified Environment handle.
    
    This method may not be called after the environment has been opened. If joining an existing database environment, any information specified to this method will be ignored.
    
    This method may be called at any time during the life of the application.
    
    
    Parameters:
    cacheSize The size of the shared memory buffer pool, that is, the size of the cache.
    
    
    
    
    這里大概說的是什么意思?
     cache最大開到4G?或者說,我可以設(shè)置多個(gè)內(nèi)存塊。每個(gè)內(nèi)存卡最大開到4G
    
網(wǎng)友評(píng)論(18464942)2013-01-23 19:20


    自挽.exe
    
網(wǎng)友評(píng)論(18464942)2013-01-23 19:46


    again.exe
    
網(wǎng)友評(píng)論(18464942)2013-01-23 20:36


    再挽.exe
    
網(wǎng)友評(píng)論(18464942)2013-01-24 09:58


    再挽.exe
    

    
    
    

關(guān)于網(wǎng)站 | 網(wǎng)站聲明 | 用戶反饋 | 合作伙伴 | 聯(lián)系我們
Copyright © 2012年2月8日
97欧美日韩国产| 日本迷奸视频一区二区不卡| 五月婷婷成人在线视频| 九九视频青青草| 精品福利片区| 91视频在线你懂得| 成人 日韩 插 国产| 久久亚日本精品| 国产精品99久久国产一区| 人妖av一区| 久久九九极品| 日韩中文字幕网页八区| 男女草逼视频网站大全| 成人国产久久久| 韩国三级AV网| 亚洲国产精品伦理片| 99久久人妻精品免费| 888av一区二区三区| 台湾xxxx综合免费| 91精品国产色综后久久| 欧美三级视频交换| 国产中日韩久久久| 九九久久,国产精品| 日韩一级9| 亚洲AV无码一二三四区在线播放| 91视频网站国产| 操嫩水B小视频| 国产成人精品午夜动态图| 成人午夜香蕉综合久久久| 白领邻居国产AV| 国语一级内射| 不卡 欧美在线| 国产欧美精品图片综合| 国产88区| 久久艹久久精品| 天干夜天天干天天射天天| 国产精品高清无码久久一区二区| 蜜臀精品99| 人凄久久婷婷中文字幕| 日本一视频区二视频| 女人裸体照牲交日本欧美亚洲一区 |