銆銆涓嬮潰鏄痜ree鐨勮繍琛岀粨鏋滐紝涓鍏辨湁4琛屻備負(fù)浜?jiǎn)鏂逛究璇存槑锛屾垜鍔犱笂浜?jiǎn)鍒楀彿銆傝繖鏍峰彲浠ユ妸free鐨勮緭鍑虹湅鎴愪竴涓簩緇存暟緇凢O(Free Output)銆備緥濡傦細(xì)
- FO[2][1] = 24677460
- FO[3][2] = 10321516
1 total used free shared buffers cached
2 Mem: 24677460 23276064 1401396 0 870540 12084008
3 -/+ buffers/cache: 10321516 14355944
4 Swap: 25151484 224188 24927296
銆銆free鐨勮緭鍑轟竴鍏辨湁鍥涜錛岀鍥涜涓轟氦鎹㈠尯鐨勪俊鎭紝鍒嗗埆鏄氦鎹㈢殑鎬婚噺錛坱otal錛夛紝浣跨敤閲忥紙used錛夊拰鏈夊灝戠┖闂茬殑浜ゆ崲鍖猴紙free錛夛紝榪欎釜姣旇緝娓呮錛屼笉璇村お澶氥?/p>
銆銆free杈撳嚭鍦扮浜岃鍜岀涓夎鏄瘮杈冭浜鴻糠鎯戠殑銆傝繖涓よ閮芥槸璇存槑鍐呭瓨浣跨敤鎯呭喌鐨勩傜涓鍒楁槸鎬婚噺錛坱otal錛夛紝絎簩鍒楁槸浣跨敤閲忥紙used錛夛紝絎笁鍒楁槸鍙敤閲忥紙free錛夈?/p>
銆銆絎竴琛岀殑杈撳嚭鏃朵粠鎿嶄綔緋葷粺錛圤S錛夋潵鐪嬬殑銆備篃灝辨槸璇達(dá)紝浠嶰S鐨勮搴︽潵鐪嬶紝璁＄畻鏈轟笂涓鍏辨湁:
- 24677460KB錛堢己鐪佹椂free鐨勫崟浣嶄負(fù)KB錛夌墿鐞嗗唴瀛橈紝鍗矲O[2][1]錛?/li>
- 鍦ㄨ繖浜涚墿鐞嗗唴瀛樹腑鏈?span style="padding-bottom: 0px; margin: 0px; padding-left: 0px; padding-right: 0px; color: rgb(0,0,0); padding-top: 0px">23276064KB錛堝嵆FO[2][2]錛夎浣跨敤浜?jiǎn)锛?/li>
- 榪樼敤1401396KB錛堝嵆FO[2][3]錛夋槸鍙敤鐨勶紱
榪欓噷寰楀埌絎竴涓瓑寮忥細(xì)
- FO[2][1] = FO[2][2] + FO[2][3]
FO[2][4]琛ㄧず琚嚑涓繘紼嬪叡浜殑鍐呭瓨鐨勶紝鐜板湪宸茬粡deprecated錛屽叾鍊兼繪槸0錛堝綋鐒跺湪涓浜涚郴緇熶笂涔熷彲鑳戒笉鏄?錛屼富瑕佸彇鍐充簬free鍛戒護(hù)鏄庝箞瀹炵幇鐨勶級(jí)銆?/p>
FO[2][5]琛ㄧず琚玂S buffer浣忕殑鍐呭瓨銆侳O[2][6]琛ㄧず琚玂S cache鐨勫唴瀛樸傚湪鏈変簺鏃跺檅uffer鍜宑ache榪欎袱涓瘝緇忓父娣風(fēng)敤銆備笉榪囧湪涓浜涙瘮杈冧綆灞傜殑杞歡閲屾槸瑕佸尯鍒嗚繖涓や釜璇嶇殑錛岀湅鑰佸鐨勬磱鏂?
- A buffer is something that has yet to be "written" to disk.
- A cache is something that has been "read" from the disk and stored for later use.
涔熷氨鏄buffer鏄敤浜庡瓨鏀捐杈撳嚭鍒癲isk錛堝潡璁懼錛夌殑鏁版嵁鐨勶紝鑰宑ache鏄瓨鏀句粠disk涓婅鍑虹殑鏁版嵁銆傝繖浜岃呮槸涓轟簡(jiǎn)鎻愰珮I(yè)O鎬ц兘鐨勶紝騫剁敱O(jiān)S綆＄悊銆?/p>
Linux鍜屽叾浠栨垚鐔熺殑鎿嶄綔緋葷粺錛堜緥濡倃indows錛夛紝涓轟簡(jiǎn)鎻愰珮I(yè)O read鐨勬ц兘錛屾繪槸瑕佸cache涓浜涙暟鎹紝榪欎篃灝辨槸涓轟粈涔團(tuán)O[2][6]錛坈ached memory錛夋瘮杈冨ぇ錛岃孎O[2][3]姣旇緝?yōu)畯鐨勫師鍥犮傛垜浠彲浠ュ仛涓涓畝鍗曠殑嫻嬭瘯:
- 閲婃斁鎺夎緋葷粺cache鍗犵敤鐨勬暟鎹紱
echo 3>/proc/sys/vm/drop_caches
- 璇諱竴涓ぇ鏂囦歡錛屽茍璁板綍鏃墮棿錛?/li>
- 鍏抽棴璇ユ枃浠訛紱
- 閲嶈榪欎釜澶ф枃浠訛紝騫惰褰曟椂闂達(dá)紱
絎簩嬈¤搴旇姣旂涓嬈″揩寰堝銆傚師鏉ユ垜鍋氳繃涓涓狟erkeleyDB鐨勮鎿嶄綔錛屽ぇ姒傝璇?G鐨勬枃浠訛紝鍑犲崈涓囨潯璁板綍銆傚湪鎴戠殑鐜涓婏紝絎簩嬈¤姣旂涓嬈″ぇ姒傚彲浠ュ揩9鍊嶅乏鍙熾?/p>
銆銆free杈撳嚭鐨勭浜岃鏄粠涓涓簲鐢ㄧ▼搴忕殑瑙掑害鐪嬬郴緇熷唴瀛樼殑浣跨敤鎯呭喌銆?/p>
- 瀵逛簬FO[3][2]錛屽嵆-buffers/cache錛岃〃紺轟竴涓簲鐢ㄧ▼搴忚涓虹郴緇熻鐢ㄦ帀澶氬皯鍐呭瓨錛?/span>
- 瀵逛簬FO[3][3]錛屽嵆+buffers/cache錛岃〃紺轟竴涓簲鐢ㄧ▼搴忚涓虹郴緇熻繕鏈夊灝戝唴瀛橈紱
鍥犱負(fù)琚郴緇焎ache鍜宐uffer鍗犵敤鐨勫唴瀛樺彲浠ヨ蹇熷洖鏀訛紝鎵浠ラ氬父FO[3][3]姣擣O[2][3]浼?xì)澶у緢澶氥?/p>
榪欓噷榪樼敤涓や釜絳夊紡錛?/p>
- FO[3][2] = FO[2][2] - FO[2][5] - FO[2][6]
- FO[3][3] = FO[2][3] + FO[2][5] + FO[2][6]
榪欎簩鑰呴兘涓嶉毦鐞嗚В銆?/p>
銆銆free鍛戒護(hù)鐢眕rocps.*.rpm鎻愪緵錛堝湪Redhat緋誨垪鐨凮S涓婏級(jí)銆俧ree鍛戒護(hù)鐨勬墍鏈夎緭鍑哄奸兘鏄粠/proc/meminfo涓鍑虹殑銆?/p>
鍦ㄧ郴緇熶笂鍙兘鏈塵eminfo(2)榪欎釜鍑芥暟錛屽畠?yōu)鏄皋Z簡(jiǎn)瑙ｆ瀽/proc/meminfo鐨勩俻rocps榪欎釜鍖呰嚜宸卞疄鐜頒簡(jiǎn)meminfo()榪欎釜鍑芥暟銆傚彲浠ヤ笅杞戒竴涓猵rocps鐨則ar鍖呯湅鐪嬪叿浣撳疄鐜幫紝鐜板湪鏈鏂扮増寮?.2.8銆?/p>
2.閫氳繃chmod 錛媥 jdk-1_6_x-rc-linux-i586-rpm.bin鍛戒護(hù)浣垮叾鑾峰緱鍙墽琛屾潈闄?/p>
4.閫氳繃 rpm –ivh jdk-1_6_x-rc-linux-i586-rpm.bin鏉ヨ繘琛屽畨瑁?/p>
5.瀹夎瀹屾瘯,JDK瀹夎鍦?usr/java/鐩綍涓?/p>
6.鍒癮pache涓婁笅杞絫ar.gz鍖呫?/p>
7.cp鍒?usr涓?鐒跺悗瑙ｅ帇 tar xzvf tomcat.tar.gz ./銆?/p>
8.寮鏈哄惎鍔ㄥ鐞嗭細(xì)
(1) vi /etc/profile 錛岃緗互涓嬬幆澧冨彉閲忥紝浠ヤ究linux鍦ㄥ惎鍔╟atalina.sh鏃朵笉浼?xì)鍑洪?br />
export JAVA_HOME = /usr/java/jdk1.6
export PATH = $JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH
export CLASSPATH=.:/usr/java/jdk1.6/lib:/usr/java/jdk1.6/jre/lib:$CLASSPATH
export CATALINA_HOME="/usr/tomcat"
export CATALINA_BASE="/usr/tomcat"
export CATALINA_TMPDIR="/usr/tomcat/tmp"
(2)vi /etc/rc.local
娣誨姞/usr/tomcat/bin/catalina.sh start
娉ㄦ剰錛屽鏋滄?zhèn)ㄤ娇鐢╩ysql鐨勮瘽錛岃淇濊瘉mysql鍦╰omcat涔嬪墠鍚姩錛屼篃鍙互鍦ㄦ湰鏂囦歡涓坊鍔狅紝濡備笅錛?br />
/etc/init.d/mysqld start //鍚姩mysql
sleep 3 //浼戠湢3縐?br />
/usr/tomcat/bin/catalina.sh start //鍚姩tomcat
]]>