JAVA铏氭嫙鏈哄弬鏁拌鏄
http://blog.****.net/jackpk/archive/2008/08/20/2800056.aspx
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鈥淢yEclipse has detected that less than 5% of the 64MB of Perm Gen (Non-heap memory) space remains.鈥濇剰鎬濇槸璇村綋鍓嶅彧鏈夊皬浜?%鐨勯潪鍫嗗唴瀛樻槸绌洪棽鐨勩€傛墍浠ユ垜浠彧瑕佸皢杩欎釜鍊艰缃ぇ涓€浜涘氨鍙互浜嗐€?
鎻愮ず涓粰鍑轰簡璁剧疆鐨勫弬鏁帮細
- -vmargs -Xms128M -Xmx512M -XX:PermSize=64M -XX:MaxPermSize=128M
杩欓噷鏈夊嚑涓棶棰橈細
1. 鍚勪釜鍙傛暟鐨勫惈涔変粈涔堬紵
2. 涓轰粈涔堟湁鐨勬満鍣ㄦ垜灏?Xmx鍜?XX:MaxPermSize閮借缃负512M涔嬪悗Eclipse鍙互鍚姩锛岃€屾湁浜涙満鍣ㄦ棤娉曞惎鍔紵
3. 涓轰綍灏嗕笂闈㈢殑鍙傛暟鍐欏叆鍒癳clipse.ini鏂囦欢Eclipse娌℃湁鎵ц瀵瑰簲鐨勮缃紵
涓嬮潰鎴戜滑涓€涓€杩涜鍥炵瓟
1. 鍚勪釜鍙傛暟鐨勫惈涔変粈涔堬紵
鍙傛暟涓?vmargs鐨勬剰鎬濇槸璁剧疆JVM鍙傛暟锛屾墍浠ュ悗闈㈢殑鍏跺疄閮芥槸JVM鐨勫弬鏁颁簡锛屾垜浠鍏堜簡瑙ｄ竴涓婮VM鍐呭瓨绠＄悊鐨勬満鍒讹紝鐒跺悗鍐嶈В閲婃瘡涓弬鏁颁唬琛ㄧ殑鍚箟銆?/p>
鍫?Heap)鍜岄潪鍫?Non-heap)鍐呭瓨
鎸夌収瀹樻柟鐨勮娉曪細鈥淛ava 铏氭嫙鏈哄叿鏈変竴涓爢锛屽爢鏄繍琛屾椂鏁版嵁鍖哄煙锛屾墍鏈夌被瀹炰緥鍜屾暟缁勭殑鍐呭瓨鍧囦粠姝ゅ鍒嗛厤銆傚爢鏄湪 Java 铏氭嫙鏈哄惎鍔ㄦ椂鍒涘缓鐨勩€傗€濃€滃湪JVM涓爢涔嬪鐨勫唴瀛樼О涓洪潪鍫嗗唴瀛?Non-heap memory)鈥濄€傚彲浠ョ湅鍑篔VM涓昏绠＄悊涓ょ绫诲瀷鐨勫唴瀛橈細鍫嗗拰闈炲爢銆傜畝鍗曟潵璇村爢灏辨槸Java浠ｇ爜鍙強鐨勫唴瀛橈紝鏄暀缁欏紑鍙戜汉鍛樹娇鐢ㄧ殑锛涢潪鍫嗗氨鏄疛VM鐣欑粰鑷繁鐢ㄧ殑锛屾墍浠ユ柟娉曞尯銆丣VM鍐呴儴澶勭悊鎴栦紭鍖栨墍闇€鐨勫唴瀛?濡侸IT缂栬瘧鍚庣殑浠ｇ爜缂撳瓨)銆佹瘡涓被缁撴瀯(濡傝繍琛屾椂甯告暟姹犮€佸瓧娈靛拰鏂规硶鏁版嵁)浠ュ強鏂规硶鍜屾瀯閫犳柟娉曠殑浠ｇ爜閮藉湪闈炲爢鍐呭瓨涓€?鍫嗗唴瀛樺垎閰?/strong>
JVM鍒濆鍒嗛厤鐨勫唴瀛樼敱-Xms鎸囧畾锛岄粯璁ゆ槸鐗╃悊鍐呭瓨鐨?/64锛汮VM鏈€澶у垎閰嶇殑鍐呭瓨鐢?Xmx鎸囧畾锛岄粯璁ゆ槸鐗╃悊鍐呭瓨鐨?/4銆傞粯璁ょ┖浣欏爢鍐呭瓨灏忎簬40%鏃讹紝JVM灏变細澧炲ぇ鍫嗙洿鍒?Xmx鐨勬渶澶ч檺鍒讹紱绌轰綑鍫嗗唴瀛樺ぇ浜?0% 鏃讹紝JVM浼氬噺灏戝爢鐩村埌-Xms鐨勬渶灏忛檺鍒躲€傚洜姝ゆ湇鍔″櫒涓€鑸缃?Xms銆?Xmx鐩哥瓑浠ラ伩鍏嶅湪姣忔GC 鍚庤皟鏁村爢鐨勫ぇ灏忋€?闈炲爢鍐呭瓨鍒嗛厤
JVM浣跨敤-XX:PermSize璁剧疆闈炲爢鍐呭瓨鍒濆鍊硷紝榛樿鏄墿鐞嗗唴瀛樼殑1/64锛涚敱XX:MaxPermSize璁剧疆鏈€澶ч潪鍫嗗唴瀛樼殑澶у皬锛岄粯璁ゆ槸鐗╃悊鍐呭瓨鐨?/4銆?JVM鍐呭瓨闄愬埗(鏈€澶у€?
棣栧厛JVM鍐呭瓨闄愬埗浜庡疄闄呯殑鏈€澶х墿鐞嗗唴瀛?搴熻瘽锛佸懙鍛?锛屽亣璁剧墿鐞嗗唴瀛樻棤闄愬ぇ鐨勮瘽锛孞VM鍐呭瓨鐨勬渶澶у€艰窡鎿嶄綔绯荤粺鏈夊緢澶х殑鍏崇郴銆傜畝鍗曠殑璇村氨32浣嶅鐞嗗櫒铏界劧鍙帶鍐呭瓨绌洪棿鏈?GB,浣嗘槸鍏蜂綋鐨勬搷浣滅郴缁熶細缁欎竴涓檺鍒讹紝杩欎釜闄愬埗涓€鑸槸2GB-3GB锛堜竴鑸潵璇碬indows绯荤粺涓嬩负1.5G-2G锛孡inux绯荤粺涓嬩负2G-3G锛夛紝鑰?4bit浠ヤ笂鐨勫鐞嗗櫒灏变笉浼氭湁闄愬埗浜嗐€?
2. 涓轰粈涔堟湁鐨勬満鍣ㄦ垜灏?Xmx鍜?XX:MaxPermSize閮借缃负512M涔嬪悗Eclipse鍙互鍚姩锛岃€屾湁浜涙満鍣ㄦ棤娉曞惎鍔紵
閫氳繃涓婇潰瀵笿VM鍐呭瓨绠＄悊鐨勪粙缁嶆垜浠凡缁忎簡瑙ｅ埌JVM鍐呭瓨鍖呭惈涓ょ锛氬爢鍐呭瓨鍜岄潪鍫嗗唴瀛橈紝鍙﹀JVM鏈€澶у唴瀛橀鍏堝彇鍐充簬瀹為檯鐨勭墿鐞嗗唴瀛樺拰鎿嶄綔绯荤粺銆傛墍浠ヨ璁剧疆VM鍙傛暟瀵艰嚧绋嬪簭鏃犳硶鍚姩涓昏鏈変互涓嬪嚑绉嶅師鍥狅細
1) 鍙傛暟涓?Xms鐨勫€煎ぇ浜?Xmx锛屾垨鑰?XX:PermSize鐨勫€煎ぇ浜?XX:MaxPermSize锛?/p>
2) -Xmx鐨勫€煎拰-XX:MaxPermSize鐨勬€诲拰瓒呰繃浜咼VM鍐呭瓨鐨勬渶澶ч檺鍒讹紝姣斿褰撳墠鎿嶄綔绯荤粺鏈€澶у唴瀛橀檺鍒讹紝鎴栬€呭疄闄呯殑鐗╃悊鍐呭瓨绛夌瓑銆傝鍒板疄闄呯墿鐞嗗唴瀛樿繖閲岄渶瑕佽鏄庝竴鐐圭殑鏄紝濡傛灉浣犵殑鍐呭瓨鏄?024MB锛屼絾瀹為檯绯荤粺涓敤鍒扮殑骞朵笉鍙兘鏄?024MB锛屽洜涓烘湁涓€閮ㄥ垎琚‖浠跺崰鐢ㄤ簡銆?/p>
3. 涓轰綍灏嗕笂闈㈢殑鍙傛暟鍐欏叆鍒癳clipse.ini鏂囦欢Eclipse娌℃湁鎵ц瀵瑰簲鐨勮缃紵
閭ｄ负浠€涔堝悓鏍风殑鍙傛暟鍦ㄥ揩鎹锋柟寮忔垨鑰呭懡浠よ涓湁鏁堣€屽湪eclipse.ini鏂囦欢涓槸鏃犳晥鐨勫憿锛熻繖鏄洜涓烘垜浠病鏈夐伒瀹坋clipse.ini鏂囦欢鐨勮缃鍒欙細
鍙傛暟褰㈠鈥滈」 鍊尖€濊繖绉嶅舰寮忥紝涓棿鏈夌┖鏍肩殑闇€瑕佹崲琛屼功鍐欙紝濡傛灉鍊间腑鏈夌┖鏍肩殑闇€瑕佺敤鍙屽紩鍙峰寘鎷捣鏉ャ€傛瘮濡傛垜浠娇鐢?vm C:\Java\jre1.6.0\bin\javaw.exe鍙傛暟璁剧疆铏氭嫙鏈猴紝鍦╡clipse.ini鏂囦欢涓鍐欐垚杩欐牱锛?/p>
- -vm
- C:\Java\jre1.6.0\bin\javaw.exe
鎸夌収涓婇潰鎵€璇寸殑锛屾渶鍚庡弬鏁板湪eclipse.ini涓彲浠ュ啓鎴愯繖涓牱瀛愶細
- -vmargs
- -Xms128M
- -Xmx512M
- -XX:PermSize=64M
- -XX:MaxPermSize=128M
瀹為檯杩愯鐨勭粨鏋滃彲浠ラ€氳繃Eclipse涓€淗elp鈥?鈥淎bout Eclipse SDK鈥濈獥鍙ｉ噷闈㈢殑鈥淐onfiguration Details鈥濇寜閽繘琛屾煡鐪嬨€?/p>
鍙﹀闇€瑕佽鏄庣殑鏄紝Eclipse鍘嬬缉鍖呬腑鑷甫鐨別clipse.ini鏂囦欢鍐呭鏄繖鏍风殑锛?/p>
- -showsplash
- org.eclipse.platform
- --launcher.XXMaxPermSize
- 256m
- -vmargs
- -Xms40m
- -Xmx256m
鍏朵腑鈥搇auncher.XXMaxPermSize锛堟敞鎰忔渶鍓嶉潰鏄袱涓繛鎺ョ嚎锛夎窡-XX:MaxPermSize鍙傛暟鐨勫惈涔夊熀鏈槸涓€鏍风殑锛屾垜瑙夊緱鍞竴鐨勫尯鍒氨鏄墠鑰呮槸eclipse.exe鍚姩鐨勬椂鍊欒缃殑鍙傛暟锛岃€屽悗鑰呮槸eclipse鎵€浣跨敤鐨凧VM涓殑鍙傛暟銆傚叾瀹炰簩鑰呰缃竴涓氨鍙互浜嗭紝鎵€浠ヨ繖閲屽彲浠ユ妸鈥搇auncher.XXMaxPermSize鍜屼笅涓€琛屼娇鐢?娉ㄩ噴鎺夈€?/p>
鍙洿鎺ヨ缃甧clipse.in閲岄潰鍙傛暟锛?/p>