锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#20037;&#20037;&#39321;&#34121;&#22269;&#20135;&#32447;&#30475;&#35266;&#30475;&#20122;&#27954;&#29255;&#44;&#20122;&#27954;&#65;&#86;&#19968;&#21306;&#20108;&#21306;&#19977;&#21306;&#22235;&#21306;&#44;&#20122;&#27954;&#27431;&#27954;&#22312;&#32447;&#25773;&#25918;</title><link>http://www.tkk7.com/qbna350816/category/55092.html</link><description>201103</description><language>zh-cn</language><lastBuildDate>Tue, 26 Jul 2016 16:09:17 GMT</lastBuildDate><pubDate>Tue, 26 Jul 2016 16:09:17 GMT</pubDate><ttl>60</ttl><item><title>甯歌鐨勫唴瀛樻孩鍑虹殑涓夌鎯呭喌</title><link>http://www.tkk7.com/qbna350816/archive/2016/07/26/431337.html</link><dc:creator>鑳″皬鍐?/dc:creator><author>鑳″皬鍐?/author><pubDate>Tue, 26 Jul 2016 15:05:00 GMT</pubDate><guid>http://www.tkk7.com/qbna350816/archive/2016/07/26/431337.html</guid><wfw:comment>http://www.tkk7.com/qbna350816/comments/431337.html</wfw:comment><comments>http://www.tkk7.com/qbna350816/archive/2016/07/26/431337.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.tkk7.com/qbna350816/comments/commentRss/431337.html</wfw:commentRss><trackback:ping>http://www.tkk7.com/qbna350816/services/trackbacks/431337.html</trackback:ping><description><![CDATA[<div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 1.875;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">楦熸楂橀鍏堟尟緲咃紝浜烘眰涓婅繘鍏堣涔︺�傛湰鏂囨槸鍘熶功鐨勭9绔?綰跨▼鐨勭洃鎺у強鍏舵棩甯稿伐浣滀腑濡備綍鍒嗘瀽閲岀殑9.3.3鑺傚父瑙佺殑鍐呭瓨婧㈠嚭鐨勪笁縐嶆儏鍐點�?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#800000;background-color:#ffffff;font-weight:bold">3. 甯歌鐨勫唴瀛樻孩鍑虹殑涓夌鎯呭喌錛?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#ff0000;background-color:#ffffff;font-weight:bold">1錛塉VM Heap錛堝爢錛夋孩鍑猴細java.lang.OutOfMemoryError: Java heap space</span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">JVM鍦ㄥ惎鍔ㄧ殑鏃跺�欎細鑷姩璁劇疆JVM Heap鐨勫�鹼紝 鍙互鍒╃敤JVM鎻愪緵鐨?Xmn -Xms -Xmx絳夐�夐」鍙繘琛岃緗�侶eap鐨勫ぇ灝忔槸Young Generation 鍜孴enured Generaion 涔嬪拰銆傚湪JVM涓鏋?8%鐨勬椂闂存槸鐢ㄤ簬GC,涓斿彲鐢ㄧ殑Heap size 涓嶈凍2%鐨勬椂鍊欏皢鎶涘嚭姝ゅ紓甯鎬俊鎭�?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#ff0000;background-color:#ffffff;font-weight:bold">瑙ｅ喅鏂規硶錛氭墜鍔ㄨ緗甁VM Heap錛堝爢錛夌殑澶у皬銆?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#ff0000;background-color:#ffffff;font-weight:bold">2錛塒ermGen space婧㈠嚭錛?java.lang.OutOfMemoryError: PermGen space</span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">PermGen space鐨勫叏縐版槸Permanent Generation space,鏄寚鍐呭瓨鐨勬案涔呬繚瀛樺尯鍩熴�備負浠�涔堜細鍐呭瓨婧㈠嚭錛岃繖鏄敱浜庤繖鍧楀唴瀛樹富瑕佹槸琚獼VM瀛樻斁Class鍜孧eta淇℃伅鐨勶紝Class鍦ㄨLoad鐨勬椂鍊欒鏀懼叆PermGen space鍖哄煙錛屽畠鍜屽瓨鏀綢nstance鐨凥eap鍖哄煙涓嶅悓錛宻un鐨?GC涓嶄細鍦ㄤ富紼嬪簭榪愯鏈熷PermGen space榪涜娓呯悊錛屾墍浠ュ鏋滀綘鐨凙PP浼氳澆鍏ュ緢澶欳LASS鐨勮瘽錛屽氨寰堝彲鑳藉嚭鐜癙ermGen space婧㈠嚭銆備竴鑸彂鐢熷湪紼嬪簭鐨勫惎鍔ㄩ樁孌點�?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#ff0000;background-color:#ffffff;font-weight:bold">瑙ｅ喅鏂規硶錛?閫氳繃-XX:PermSize鍜?XX:MaxPermSize璁劇疆姘鎬箙浠ｅぇ灝忓嵆鍙�?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#ff0000;background-color:#ffffff;font-weight:bold">3錛夋爤婧㈠嚭錛?java.lang.StackOverflowError : Thread Stack space</span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">鏍堟孩鍑轟簡錛孞VM渚濈劧鏄噰鐢ㄦ爤寮忕殑铏氭嫙鏈猴紝榪欎釜鍜孋鍜孭ascal閮芥槸涓�鏍風殑銆傚嚱鏁扮殑璋冪敤榪囩▼閮戒綋鐜板湪鍫嗘爤鍜岄��鏍堜笂浜嗐�傝皟鐢ㄦ瀯閫犲嚱鏁扮殑 &#8220;灞?#8221;澶浜嗭紝浠ヨ嚧浜庢妸鏍堝尯婧㈠嚭浜嗐�?閫氬父鏉ヨ錛屼竴鑸爤鍖鴻繙榪滃皬浜庡爢鍖虹殑錛屽洜涓哄嚱鏁拌皟鐢ㄨ繃紼嬪線寰�涓嶄細澶氫簬涓婂崈灞傦紝鑰屽嵆渚挎瘡涓嚱鏁拌皟鐢ㄩ渶瑕?1K鐨勭┖闂達紙榪欎釜澶х害鐩稿綋浜庡湪涓�涓狢鍑芥暟鍐呭０鏄庝簡256涓猧nt綾誨瀷鐨勫彉閲忥級錛岄偅涔堟爤鍖轟篃涓嶈繃鏄渶瑕?MB鐨勭┖闂淬�傞�氬父鏍堢殑澶у皬鏄?-2MB鐨勩�傞�氫織涓�鐐硅灝辨槸鍗曠嚎紼嬬殑紼嬪簭闇�瑕佺殑鍐呭瓨澶ぇ浜嗐�?閫氬父閫掑綊涔熶笉瑕侀�掑綊鐨勫眰嬈¤繃澶氾紝寰堝鏄撴孩鍑恒�?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#ff0000;background-color:#ffffff;font-weight:bold">瑙ｅ喅鏂規硶錛?錛氫慨鏀圭▼搴忋�?錛氶�氳繃 -Xss: 鏉ヨ緗瘡涓嚎紼嬬殑Stack澶у皬鍗沖彲銆?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#800000;background-color:#ffffff;font-weight:bold;text-decoration:underline">4. 鎵�浠erver瀹瑰櫒鍚姩鐨勬椂鍊欐垜浠粡甯稿叧蹇冨拰璁劇疆JVM鐨勫嚑涓弬鏁板涓嬶紙璇︾粏鐨凧VM鍙傛暟璇峰弬鐪嬮檮褰曚笁錛夛細</span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-Xms錛歫ava Heap鍒濆澶у皬錛?榛樿鏄墿鐞嗗唴瀛樼殑1/64銆?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-Xmx錛歛va Heap鏈�澶у�鹼紝涓嶅彲瓚呰繃鐗╃悊鍐呭瓨銆?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-Xmn錛歽oung generation鐨刪eap澶у皬錛屼竴鑸緗負Xmx鐨?銆?鍒嗕箣涓� 銆傚澶у勾杞諱唬鍚?灝嗕細鍑忓皬騫磋�佷唬澶у皬錛屽彲浠ユ牴鎹洃鎺у悎鐞嗚緗�?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-Xss錛氭瘡涓嚎紼嬬殑Stack澶у皬錛岃�屾渶浣沖�煎簲璇ユ槸128K,榛樿鍊煎ソ鍍忔槸512k銆?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-XX:PermSize錛氳瀹氬唴瀛樼殑姘鎬箙淇濆瓨鍖哄垵濮嬪ぇ灝忥紝緙虹渷鍊間負64M銆?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-XX:MaxPermSize錛氳瀹氬唴瀛樼殑姘鎬箙淇濆瓨鍖烘渶澶уぇ灝忥紝緙虹渷鍊間負64M銆?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-XX:SurvivorRatio錛欵den鍖轟笌Survivor鍖虹殑澶у皬姣斿�?璁劇疆涓?,鍒欎袱涓猄urvivor鍖轟笌涓�涓狤den鍖虹殑姣斿�間負2:8,涓�涓猄urvivor鍖哄崰鏁翠釜騫磋交浠ｇ殑1/10</span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-XX:+UseParallelGC錛欶騫磋交浠ｄ嬌鐢ㄥ茍鍙戞敹闆?鑰屽勾鑰佷唬浠嶆棫浣跨敤涓茶鏀墮泦.</span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-XX:+UseParNewGC錛氳緗勾杞諱唬涓哄茍琛屾敹闆?JDK5.0浠ヤ笂,JVM浼氭牴鎹郴緇熼厤緗嚜琛岃緗?鎵�鏃犻渶鍐嶈緗鍊箋�?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-XX:ParallelGCThreads錛氬茍琛屾敹闆嗗櫒鐨勭嚎紼嬫暟錛屽�兼渶濂介厤緗笌澶勭悊鍣ㄦ暟鐩浉絳?鍚屾牱閫傜敤浜嶤MS銆?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-XX:+UseParallelOldGC錛氬勾鑰佷唬鍨冨溇鏀墮泦鏂瑰紡涓哄茍琛屾敹闆?Parallel Compacting)銆?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-XX:MaxGCPauseMillis錛氭瘡嬈″勾杞諱唬鍨冨溇鍥炴敹鐨勬渶闀挎椂闂?鏈�澶ф殏鍋滄椂闂?錛屽鏋滄棤娉曟弧瓚蟲鏃墮棿,JVM浼氳嚜鍔ㄨ皟鏁村勾杞諱唬澶у皬,浠ユ弧瓚蟲鍊箋�?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">-XX:+ScavengeBeforeFullGC錛欶ull GC鍓嶈皟鐢╕GC,榛樿鏄痶rue銆?/span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; line-height: 2.5;"><span style="font-family:Arial;color:#666666;background-color:#ffffff">瀹炰緥濡傦細JAVA_OPTS=&#8221;-Xms4g -Xmx4g -Xmn1024m -XX:PermSize=320M -XX:MaxPermSize=320m -XX:SurvivorRatio=6&#8243;</span></div><div yne-bulb-block="paragraph" style="white-space: pre-wrap; 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