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>&#20122;&#27954;&#20154;&#25104;&#24433;&#38498;&#22312;&#32447;&#26080;&#30721;&#35266;&#30475;&#44;&#51;&#51;&#55;&#112;&#27431;&#27954;&#20122;&#27954;&#22823;&#32966;&#33402;&#26415;&#44;&#22269;&#20135;&#31934;&#21697;&#20122;&#27954;&#19968;&#21306;&#20108;&#21306;&#19977;&#21306;&#22312;&#32447;&#35266;&#30475;&#13;</title><link>http://m.tkk7.com/anchor110/category/45631.html</link><description /><language>zh-cn</language><lastBuildDate>Mon, 01 Dec 2014 05:41:28 GMT</lastBuildDate><pubDate>Mon, 01 Dec 2014 05:41:28 GMT</pubDate><ttl>60</ttl><item><title>java cpu楂橀棶棰樺垎鏋愭柟娉?/title><link>http://m.tkk7.com/anchor110/articles/420528.html</link><dc:creator>灝忎竴璐ユ秱鍦?/dc:creator><author>灝忎竴璐ユ秱鍦?/author><pubDate>Mon, 24 Nov 2014 10:26:00 GMT</pubDate><guid>http://m.tkk7.com/anchor110/articles/420528.html</guid><wfw:comment>http://m.tkk7.com/anchor110/comments/420528.html</wfw:comment><comments>http://m.tkk7.com/anchor110/articles/420528.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://m.tkk7.com/anchor110/comments/commentRss/420528.html</wfw:commentRss><trackback:ping>http://m.tkk7.com/anchor110/services/trackbacks/420528.html</trackback:ping><description><![CDATA[<div>鏂規硶鎬葷粨濡備笅錛?br />1銆乼op鏌ョ湅鑰桟PU鐨刯ava綰跨▼ID錛屽亣璁劇嚎紼婭D涓?987銆?br />2銆乼op -H -p 1987鏌ョ湅姝よ繘紼嬩笅鐨勬墍鏈夌嚎紼嬶紝璁板綍涓嬭�桟PU鐨凧AVA綰跨▼ID錛屽亣濡傦細12706銆?br />3銆乯stack 1987 &gt; thread.dump錛屽皢榪涚▼褰撴椂鐨勫唴瀛樻儏鍐礑UMP鍒頒竴涓枃浠朵腑銆?br />4銆乿i thread.dump錛岀劧鍚庡皢綰跨▼ID12706杞寲涓哄崄鍏繘鍒訛紝鍗?1A2錛屾敞鎰忔澶勯渶瑕佸皢鎵�鏈夊ぇ鍐欏瓧姣嶅皬鍐欏寲錛屽嵆鏈�緇堜負錛?1a2錛屽湪thread.dump涓煡鎵?1a2錛屽嵆鍙畾浣嶅埌闂浠ｇ爜銆?/div><img src ="http://m.tkk7.com/anchor110/aggbug/420528.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.tkk7.com/anchor110/" target="_blank">灝忎竴璐ユ秱鍦?/a> 2014-11-24 18:26 <a href="http://m.tkk7.com/anchor110/articles/420528.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>鐩戞帶緋葷粺鏈嶅姟鍜岀鍙ｏ紝寮傚父鏃跺疄鐜拌嚜鍔ㄩ噸鍚?/title><link>http://m.tkk7.com/anchor110/articles/395939.html</link><dc:creator>灝忎竴璐ユ秱鍦?/dc:creator><author>灝忎竴璐ユ秱鍦?/author><pubDate>Fri, 01 Mar 2013 09:08:00 GMT</pubDate><guid>http://m.tkk7.com/anchor110/articles/395939.html</guid><wfw:comment>http://m.tkk7.com/anchor110/comments/395939.html</wfw:comment><comments>http://m.tkk7.com/anchor110/articles/395939.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://m.tkk7.com/anchor110/comments/commentRss/395939.html</wfw:commentRss><trackback:ping>http://m.tkk7.com/anchor110/services/trackbacks/395939.html</trackback:ping><description><![CDATA[璇﹁錛歨ttp://www.51testing.com/html/86/n-214186.html<br /><br />紺轟緥錛岀洃鍚瑂sh鏈嶅姟錛屽鏋滃仠姝㈠垯鑷姩閲嶅惎鏈嶅姟錛屾楠ゅ涓嬶細<br />1銆乿i /etc/monit.d/sshd.monit銆?br />2銆佹挵鍐欏唴瀹癸紝濡備笅錛?br /><div>check process sshd with pidfile /var/run/sshd.pid<br />&nbsp;&nbsp;&nbsp; start program = "/etc/init.d/sshd start"<br />&nbsp;&nbsp;&nbsp; stop program = "/etc/init.d/sshd stop"<br />&nbsp;&nbsp;&nbsp; if failed port 22 protocol ssh then restart<br />&nbsp;&nbsp;&nbsp; if 5 restarts within 5 cycles then timeout</div>3銆佸鏋滆璁劇疆monit鐨勭浉鍏沖弬鏁幫紝姣斿澶氶暱鏃墮棿媯�嫻嬩竴嬈★紝璇蜂慨鏀?etc/monit.conf錛岀ず渚嬫枃浠跺涓嬶細<br /><div>set daemon 300<br /><br />set logfile /var/log/monit.log<br />set idfile /var/monit/id<br />set statefile /var/monit/state<br /><br />set httpd port 2812 and use address 127.0.0.1<br />&nbsp;&nbsp;&nbsp; allow 127.0.0.1<br />&nbsp;&nbsp;&nbsp; allow surfront:surfront<br /><br />check system 127.0.0.1<br /><br />include /etc/monit.d/*.monit<br />4銆侀噸鍚痬onit鏈嶅姟錛?etc/init.d/monit restart銆?br />5銆佸畬姣曪紝monit鐨勭浉鍏蟲棩蹇椾綅浜?var/log/monit.log銆?/div><br /><img src ="http://m.tkk7.com/anchor110/aggbug/395939.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.tkk7.com/anchor110/" target="_blank">灝忎竴璐ユ秱鍦?/a> 2013-03-01 17:08 <a href="http://m.tkk7.com/anchor110/articles/395939.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>mysql鏌ョ湅鏁版嵁搴撹繛鎺ユ暟鍙婄姸鎬?/title><link>http://m.tkk7.com/anchor110/articles/391643.html</link><dc:creator>灝忎竴璐ユ秱鍦?/dc:creator><author>灝忎竴璐ユ秱鍦?/author><pubDate>Tue, 20 Nov 2012 07:02:00 GMT</pubDate><guid>http://m.tkk7.com/anchor110/articles/391643.html</guid><wfw:comment>http://m.tkk7.com/anchor110/comments/391643.html</wfw:comment><comments>http://m.tkk7.com/anchor110/articles/391643.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://m.tkk7.com/anchor110/comments/commentRss/391643.html</wfw:commentRss><trackback:ping>http://m.tkk7.com/anchor110/services/trackbacks/391643.html</trackback:ping><description><![CDATA[鍛戒護濡備笅錛?br /><div style="background-color:#eeeeee;font-size:13px;border:1px solid #CCCCCC;padding-right: 5px;padding-bottom: 4px;padding-left: 4px;padding-top: 4px;width: 98%;word-break:break-all"><!--<br /><br />Code highlighting produced by Actipro CodeHighlighter (freeware)<br />http://www.CodeHighlighter.com/<br /><br />--><span style="color: #000000; ">mysqladmin&nbsp;</span><span style="color: #000000; ">-</span><span style="color: #000000; ">uroot&nbsp;</span><span style="color: #000000; ">-</span><span style="color: #000000; ">p123456&nbsp;status</span></div>娉細Threads鍗充負榪炴帴涓暟銆?br /><img src ="http://m.tkk7.com/anchor110/aggbug/391643.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.tkk7.com/anchor110/" target="_blank">灝忎竴璐ユ秱鍦?/a> 2012-11-20 15:02 <a href="http://m.tkk7.com/anchor110/articles/391643.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>甯哥敤鎺掗敊鎶�宸?/title><link>http://m.tkk7.com/anchor110/articles/391150.html</link><dc:creator>灝忎竴璐ユ秱鍦?/dc:creator><author>灝忎竴璐ユ秱鍦?/author><pubDate>Sat, 10 Nov 2012 12:32:00 GMT</pubDate><guid>http://m.tkk7.com/anchor110/articles/391150.html</guid><wfw:comment>http://m.tkk7.com/anchor110/comments/391150.html</wfw:comment><comments>http://m.tkk7.com/anchor110/articles/391150.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://m.tkk7.com/anchor110/comments/commentRss/391150.html</wfw:commentRss><trackback:ping>http://m.tkk7.com/anchor110/services/trackbacks/391150.html</trackback:ping><description><![CDATA[/var/log/messages錛岃褰曠郴緇熷嚭閿欎俊鎭�?br />/var/log/monit.log錛岃褰曟湇鍔¤繍琛岀浉鍏蟲儏鍐點�?br />/tmp錛宮ysql鏌ヨ鏃朵駭鐢熺殑涓存椂琛ㄩ粯璁や細瀛樻斁鍦ㄨ繖銆傚綋鐒訛紝浣犲彲浠ユ墜鍔ㄤ慨鏀?etc/my.cnf涓璽mpdir涓哄彟涓�浣嶇疆銆?img src ="http://m.tkk7.com/anchor110/aggbug/391150.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.tkk7.com/anchor110/" target="_blank">灝忎竴璐ユ秱鍦?/a> 2012-11-10 20:32 <a href="http://m.tkk7.com/anchor110/articles/391150.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>mysql澶ф暟鎹噺涓嬩慨鏀硅〃緇撴瀯鐨勬柟娉?/title><link>http://m.tkk7.com/anchor110/articles/361152.html</link><dc:creator>灝忎竴璐ユ秱鍦?/dc:creator><author>灝忎竴璐ユ秱鍦?/author><pubDate>Thu, 13 Oct 2011 07:17:00 GMT</pubDate><guid>http://m.tkk7.com/anchor110/articles/361152.html</guid><wfw:comment>http://m.tkk7.com/anchor110/comments/361152.html</wfw:comment><comments>http://m.tkk7.com/anchor110/articles/361152.html#Feedback</comments><slash:comments>1</slash:comments><wfw:commentRss>http://m.tkk7.com/anchor110/comments/commentRss/361152.html</wfw:commentRss><trackback:ping>http://m.tkk7.com/anchor110/services/trackbacks/361152.html</trackback:ping><description><![CDATA[褰撹〃鏁版嵁閲忔槸鍑犵櫨涓囨潯浠ヤ笂鏃訛紝濡傛灉瑕佷慨鏀瑰師琛ㄧ粨鏋勶紝姣斿緇欏師琛ㄥ姞涓垪瀛楁錛屽悓鏃跺湪榪欎釜琛ㄤ笂鍔犵儲寮曘�?br />璇峰嬁浣跨敤浠ヤ笅鏂瑰紡錛?br /><div>alter table video_names add column type VARCHAR(255) NOT NULL, add index(type)</div><br />鍘熷洜鏄細<br />緇忚繃瀹為檯嫻嬭瘯錛岃〃鏁版嵁閲忔槸800澶氫竾鏉★紝榪愯涓婅堪璇彞鏃訛紝鍑犱釜灝忔椂鎵ц涓嶅畬銆?br /><br /><br />姝ｇ‘鏂瑰紡錛?br />1銆佸垱寤轟竴涓柊琛╰mp_names<br />2銆佹墽琛宨nsert into tmp_names(****) select ***** from video_name;<br />3銆佸垹闄ideo_names<br />4銆侀噸鍛藉悕tmp_name涓簐ideo_names;璇彞涓簉ename table tmp_names to video_names;<img src ="http://m.tkk7.com/anchor110/aggbug/361152.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.tkk7.com/anchor110/" target="_blank">灝忎竴璐ユ秱鍦?/a> 2011-10-13 15:17 <a href="http://m.tkk7.com/anchor110/articles/361152.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>JVM鍐呭瓨綆＄悊鎬葷粨(娉細杞澆浜巋ttp://topic.csdn.net/u/20090602/10/bd9d4ba2-dbeb-49b3-8651-67c5de2b228a.html)</title><link>http://m.tkk7.com/anchor110/articles/330161.html</link><dc:creator>灝忎竴璐ユ秱鍦?/dc:creator><author>灝忎竴璐ユ秱鍦?/author><pubDate>Sun, 29 Aug 2010 05:13:00 GMT</pubDate><guid>http://m.tkk7.com/anchor110/articles/330161.html</guid><wfw:comment>http://m.tkk7.com/anchor110/comments/330161.html</wfw:comment><comments>http://m.tkk7.com/anchor110/articles/330161.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://m.tkk7.com/anchor110/comments/commentRss/330161.html</wfw:commentRss><trackback:ping>http://m.tkk7.com/anchor110/services/trackbacks/330161.html</trackback:ping><description><![CDATA[鍏堢湅涓�鐪婮VM鐨勫唴閮ㄧ粨鏋勨�斺�?br />
<img src="http://p.blog.csdn.net/images/p_blog_csdn_net/Ant_Yan/EntryImages/20090520/a7413588-2618-3301-9eb4-e025e5afc2d8.png" alt="" /><br />
<br />
濡?
鍥炬墍紺猴紝JVM涓昏鍖呮嫭涓や釜瀛愮郴緇熷拰涓や釜緇勪歡銆備袱涓瓙緋葷粺鍒嗗埆鏄疌lass loader瀛愮郴緇熷拰Execution engine(鎵ц寮曟搸)
瀛愮郴緇燂紱涓や釜緇勪歡鍒嗗埆鏄疪untime data area (榪愯鏃舵暟鎹尯鍩?緇勪歡鍜孨ative interface(鏈湴鎺ュ彛)緇勪歡銆?br />
&nbsp;<br />
Class
loader瀛愮郴緇熺殑浣滅敤錛氭牴鎹粰瀹氱殑鍏ㄩ檺瀹氬悕綾誨悕(濡?java.lang.Object)鏉ヨ杞絚lass鏂囦歡鐨勫唴瀹瑰埌 Runtime data
area涓殑method area(鏂規硶鍖哄煙)銆侸ava紼嬪簭鍛樺彲浠xtends
java.lang.ClassLoader綾繪潵鍐欒嚜宸辯殑Class loader銆?nbsp; <br />
<br />
Execution
engine瀛愮郴緇熺殑浣滅敤錛氭墽琛宑lasses涓殑鎸囦護銆備換浣旿VM specification瀹炵幇(JDK)鐨勬牳蹇冮兘鏄疎xecution
engine錛屼笉鍚岀殑JDK渚嬪Sun 鐨凧DK 鍜孖BM鐨凧DK濂藉潖涓昏灝卞彇鍐充簬浠栦滑鍚勮嚜瀹炵幇鐨凟xecution  engine鐨勫ソ鍧忋�?br />
<br />
Native
interface緇勪歡錛氫笌native
libraries浜や簰錛屾槸鍏跺畠緙栫▼璇█浜や簰鐨勬帴鍙ｃ�傚綋璋冪敤native鏂規硶鐨勬椂鍊欙紝灝辮繘鍏ヤ簡涓�涓叏鏂扮殑騫朵笖涓嶅啀鍙楄櫄鎷熸満闄愬埗鐨勪笘鐣岋紝鎵�浠ヤ篃寰堝鏄撳嚭鐜?
JVM鏃犳硶鎺у埗鐨刵ative heap OutOfMemory銆?br />
<br />
Runtime Data Area緇勪歡錛氳繖灝辨槸鎴戜滑甯歌鐨凧VM鐨勫唴瀛樹簡銆傚畠涓昏鍒嗕負浜斾釜閮ㄥ垎鈥斺�?br />
1銆丠eap (鍫?錛氫竴涓狫ava铏氭嫙瀹炰緥涓彧瀛樺湪涓�涓爢絀洪棿<br />
2銆丮ethod Area(鏂規硶鍖哄煙)錛氳瑁呰澆鐨刢lass鐨勪俊鎭瓨鍌ㄥ湪Method area鐨勫唴瀛樹腑銆傚綋铏氭嫙鏈鴻杞芥煇涓被鍨嬫椂錛屽畠浣跨敤綾昏杞藉櫒瀹氫綅鐩稿簲鐨刢lass鏂囦歡錛岀劧鍚庤鍏ヨ繖涓猚lass鏂囦歡鍐呭騫舵妸瀹冧紶杈撳埌铏氭嫙鏈轟腑銆?br />
3銆丣ava Stack(java鐨勬爤)錛氳櫄鎷熸満鍙細鐩存帴瀵笿ava stack鎵ц涓ょ鎿嶄綔錛氫互甯т負鍗曚綅鐨勫帇鏍堟垨鍑烘爤<br />
4銆丳rogram Counter(紼嬪簭璁℃暟鍣?錛氭瘡涓�涓嚎紼嬮兘鏈夊畠鑷繁鐨凱C瀵勫瓨鍣紝涔熸槸璇ョ嚎紼嬪惎鍔ㄦ椂鍒涘緩鐨勩�侾C瀵勫瓨鍣ㄧ殑鍐呭鎬繪槸鎸囧悜涓嬩竴鏉″皢琚墽琛屾寚浠ょ殑楗垮湴鍧�錛岃繖閲岀殑鍦板潃鍙互鏄竴涓湰鍦版寚閽堬紝涔熷彲浠ユ槸鍦ㄦ柟娉曞尯涓浉瀵瑰簲浜庤鏂規硶璧峰鎸囦護鐨勫亸縐婚噺銆?nbsp; <br />
5銆丯ative method stack(鏈湴鏂規硶鏍?錛氫繚瀛榥ative鏂規硶榪涘叆鍖哄煙鐨勫湴鍧�<br />
<br />
浠ヤ笂浜旈儴鍒嗗彧鏈塇eap 鍜孧ethod Area鏄鎵�鏈夌嚎紼嬬殑鍏變韓浣跨敤鐨勶紱鑰孞ava stack, Program counter 鍜孨ative method stack鏄互綰跨▼涓虹矑搴︾殑錛屾瘡涓嚎紼嬬嫭鑷嫢鏈夎嚜宸辯殑閮ㄥ垎銆?br />
<br />
浜嗚ВJVM鐨勭郴緇熺粨鏋勶紝鍐嶆潵鐪嬬湅JVM鍐呭瓨鍥炴敹闂浜嗏�斺�?br />
Sun鐨凧VM Generational Collecting(鍨冨溇鍥炴敹)鍘熺悊鏄繖鏍風殑錛氭妸瀵硅薄鍒嗕負騫撮潚浠?Young)銆佸勾鑰佷唬(Tenured)銆佹寔涔呬唬(Perm)錛屽涓嶅悓鐢熷懡鍛ㄦ湡鐨勫璞′嬌鐢ㄤ笉鍚岀殑綆楁硶銆?鍩轟簬瀵瑰璞＄敓鍛藉懆鏈熷垎鏋?<br />
<img src="http://p.blog.csdn.net/images/p_blog_csdn_net/Ant_Yan/EntryImages/20090520/39bbb07d-fe97-3d9e-b55f-2f48a6d46395.png" alt="" /><br />
<br />
濡備笂鍥炬墍紺猴紝涓篔ava鍫嗕腑鐨勫悇浠ｅ垎甯冦�?nbsp; <br />
1. Young錛堝勾杞諱唬錛?br />
騫?
杞諱唬鍒嗕笁涓尯銆備竴涓狤den鍖猴紝涓や釜Survivor鍖恒�傚ぇ閮ㄥ垎瀵硅薄鍦‥den鍖轟腑鐢熸垚銆傚綋Eden鍖烘弧鏃訛紝榪樺瓨媧葷殑瀵硅薄灝嗚澶嶅埗鍒癝urvivor鍖?
錛堜袱涓腑鐨勪竴涓級錛屽綋榪欎釜Survivor鍖烘弧鏃訛紝姝ゅ尯鐨勫瓨媧誨璞″皢琚鍒跺埌鍙﹀涓�涓猄urvivor鍖猴紝褰撹繖涓猄urvivor鍘諱篃婊′簡鐨勬椂鍊欙紝浠庣涓�
涓猄urvivor鍖哄鍒惰繃鏉ョ殑騫朵笖姝ゆ椂榪樺瓨媧葷殑瀵硅薄錛屽皢琚鍒跺勾鑰佸尯(Tenured銆傞渶瑕佹敞鎰忥紝Survivor鐨勪袱涓尯鏄縐扮殑錛屾病鍏堝悗鍏崇郴錛屾墍浠?
鍚屼竴涓尯涓彲鑳藉悓鏃跺瓨鍦ㄤ粠Eden澶嶅埗榪囨潵
瀵硅薄錛屽拰浠庡墠涓�涓猄urvivor澶嶅埗榪囨潵鐨勫璞★紝鑰屽鍒跺埌騫磋�佸尯鐨勫彧鏈変粠絎竴涓猄urvivor鍘昏繃鏉ョ殑瀵硅薄銆傝�屼笖錛孲urvivor鍖烘�繪湁涓�涓槸絀?
鐨勩�?nbsp; <br />
2. Tenured錛堝勾鑰佷唬錛?br />
騫磋�佷唬瀛樻斁浠庡勾杞諱唬瀛樻椿鐨勫璞°�備竴鑸潵璇村勾鑰佷唬瀛樻斁鐨勯兘鏄敓鍛芥湡杈冮暱鐨勫璞°�?nbsp; <br />
3. Perm錛堟寔涔呬唬錛?br />
鐢?
浜庡瓨鏀鵑潤鎬佹枃浠訛紝濡備粖Java綾匯�佹柟娉曠瓑銆傛寔涔呬唬瀵瑰瀮鍦懼洖鏀舵病鏈夋樉钁楀獎鍝嶏紝浣嗘槸鏈変簺搴旂敤鍙兘鍔ㄦ�佺敓鎴愭垨鑰呰皟鐢ㄤ竴浜沜lass錛屼緥濡侶ibernate絳夛紝
鍦ㄨ繖縐嶆椂鍊欓渶瑕佽緗竴涓瘮杈冨ぇ鐨勬寔涔呬唬絀洪棿鏉ュ瓨鏀捐繖浜涜繍琛岃繃紼嬩腑鏂板鐨勭被銆傛寔涔呬唬澶у皬閫氳繃-XX:MaxPermSize=榪涜璁劇疆銆?br />
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涓?
涓緥瀛愶細褰撳湪紼嬪簭涓敓鎴愬璞℃椂錛屾甯稿璞′細鍦ㄥ勾杞諱唬涓垎閰嶇┖闂達紝濡傛灉鏄繃澶х殑瀵硅薄涔熷彲鑳戒細鐩存帴鍦ㄥ勾鑰佷唬鐢熸垚錛堟嵁瑙傛祴鍦ㄨ繍琛屾煇紼嬪簭鏃跺�欐瘡嬈′細鐢熸垚涓�涓崄鍏嗙殑
絀洪棿鐢ㄦ敹鍙戞秷鎭紝榪欓儴鍒嗗唴瀛樺氨浼氱洿鎺ュ湪騫磋�佷唬鍒嗛厤錛夈�傚勾杞諱唬鍦ㄧ┖闂磋鍒嗛厤瀹岀殑鏃跺�欏氨浼氬彂璧峰唴瀛樺洖鏀訛紝澶ч儴鍒嗗唴瀛樹細琚洖鏀訛紝涓�閮ㄥ垎騫稿瓨鐨勫唴瀛樹細琚嫹璐濊嚦
Survivor鐨刦rom鍖猴紝緇忚繃澶氭鍥炴敹浠ュ悗濡傛灉from鍖哄唴瀛樹篃鍒嗛厤瀹屾瘯錛屽氨浼氫篃鍙戠敓鍐呭瓨鍥炴敹鐒跺悗灝嗗墿浣欑殑瀵硅薄鎷瘋礉鑷硉o鍖恒�傜瓑鍒皌o鍖轟篃婊＄殑鏃?
鍊欙紝灝變細鍐嶆鍙戠敓鍐呭瓨鍥炴敹鐒跺悗鎶婂垢瀛樼殑瀵硅薄鎷瘋礉鑷沖勾鑰佸尯銆?br />
<br />
閫氬父鎴戜滑璇寸殑JVM鍐呭瓨鍥炴敹鎬繪槸鍦ㄦ寚鍫嗗唴瀛樺洖鏀訛紝紜疄鍙湁鍫嗕腑鐨勫唴瀹規槸鍔ㄦ�佺敵璇峰垎閰嶇殑錛屾墍浠ヤ互涓婂璞＄殑騫磋交浠ｅ拰騫磋�佷唬閮芥槸鎸囩殑JVM鐨凥eap絀洪棿錛岃�屾寔涔呬唬鍒欐槸涔嬪墠鎻愬埌鐨凪ethod Area錛屼笉灞炰簬Heap銆?br />
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浜嗚В瀹岃繖浜涗箣鍚庯紝浠ヤ笅鐨勮漿杞戒竴鐑》浜庨捇鐮旀妧鏈殑鍝ヤ滑Richen Wang鍏充簬鍐呭瓨綆＄悊鐨勪竴浜涘緩璁�斺�?br />
1銆佹墜鍔ㄥ皢鐢熸垚鐨勬棤鐢ㄥ璞★紝涓棿瀵硅薄緗負null錛屽姞蹇唴瀛樺洖鏀躲�?br />
2銆佸璞℃睜鎶�鏈?濡傛灉鐢熸垚鐨勫璞℃槸鍙噸鐢ㄧ殑瀵硅薄錛屽彧鏄叾涓殑灞炴�т笉鍚屾椂錛屽彲浠ヨ�冭檻閲囩敤瀵硅薄姹犳潵杈冨皯瀵硅薄鐨勭敓鎴愩�傚鏋滄湁絀洪棽鐨勫璞″氨浠庡璞℃睜涓彇鍑轟嬌鐢紝娌℃湁鍐嶇敓鎴愭柊鐨勫璞★紝澶уぇ鎻愰珮浜嗗璞＄殑澶嶇敤鐜囥�?br />
3銆丣VM璋冧紭 閫氳繃閰嶇疆JVM鐨勫弬鏁版潵鎻愰珮鍨冨溇鍥炴敹鐨勯�熷害錛屽鏋滃湪娌℃湁鍑虹幇鍐呭瓨娉勯湶涓斾笂闈袱縐嶅姙娉曢兘涓嶈兘淇濊瘉鍐呭瓨鐨勫洖鏀舵椂錛屽彲浠ヨ�冭檻閲囩敤JVM璋冧紭鐨勬柟寮忔潵瑙ｅ喅錛屼笉榪囦竴瀹氳緇忚繃瀹炰綋鏈虹殑闀挎湡嫻嬭瘯錛屽洜涓轟笉鍚岀殑鍙傛暟鍙兘寮曡搗涓嶅悓鐨勬晥鏋溿�傚-Xnoclassgc鍙傛暟絳夈�?br />
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鎺ㄨ崘鐨勪袱嬈懼唴瀛樻嫻嬪伐鍏?br />
1銆?
jconsole  JDK鑷甫鐨勫唴瀛樼洃嫻嬪伐鍏鳳紝璺緞jdk
bin鐩綍涓媕console.exe錛屽弻鍑誨彲榪愯銆傝繛鎺ユ柟寮忔湁涓ょ錛岀涓�縐嶆槸鏈湴鏂瑰紡濡傝皟璇曟椂榪愯鐨勮繘紼嬪彲浠ョ洿鎺ヨ繛錛岀浜岀鏄繙紼嬫柟寮忥紝鍙互榪炴帴浠ユ湇鍔?
褰㈠紡鍚姩鐨勮繘紼嬨�傝繙紼嬭繛鎺ユ柟寮忔槸錛氬湪鐩爣榪涚▼鐨刯vm鍚姩鍙傛暟涓坊鍔?Dcom.sun.management.jmxremote.port=1090
-Dcom.sun.management.jmxremote.ssl=false
-Dcom.sun.management.jmxremote.authenticate=false
1090鏄洃鍚殑绔彛鍙峰叿浣撲嬌鐢ㄦ椂瑕佽繘琛屼慨鏀癸紝鐒跺悗浣跨敤IP鍔犵鍙ｅ彿榪炴帴鍗沖彲銆傞�氳繃璇ュ伐鍏峰彲浠ョ洃嫻嬪埌褰撴椂鍐呭瓨鐨勫ぇ灝忥紝CPU鐨勪嬌鐢ㄩ噺浠ュ強綾葷殑鍔犺澆錛岃繕鎻愪緵
浜嗘墜鍔╣c鐨勫姛鑳姐�備紭鐐規槸鏁堢巼楂橈紝閫熷害蹇紝鍦ㄤ笉褰卞搷榪涜榪愯鐨勬儏鍐典笅鐩戞祴浜у搧鐨勮繍琛屻�傜己鐐規槸鏃犳硶鐪嬪埌綾繪垨鑰呭璞′箣綾葷殑鍏蜂綋淇℃伅銆備嬌鐢ㄦ柟寮忓緢綆�鍗曠偣鍑誨嚑涓嬪氨
鍙互鐭ラ亾鍔熻兘濡備綍浜嗭紝紜疄鏈変笉鏄庣櫧涔嬪鍙互涓婄綉鏌ヨ鏂囨。銆?br />
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2銆丣Profiler
鏀惰垂鐨勫伐鍏鳳紝浣嗘槸鍒板閮芥湁鐮磋В鍔炴硶銆傚畨瑁呭ソ浠ュ悗鎸夌収閰嶇疆璋冭瘯鐨勬柟寮忛厤緗ソ涓�涓湰鍦扮殑session鍗沖彲榪愯銆傚彲浠ョ洃嫻嬪綋鏃剁殑鍐呭瓨銆丆PU銆佺嚎紼嬬瓑錛岃兘鍏蜂綋
鐨勫垪鍑哄唴瀛樼殑鍗犵敤鎯呭喌錛岃繕鍙互灝辨煇涓被榪涜鍒嗘瀽銆備紭鐐瑰緢澶氾紝緙虹偣澶獎鍝嶉�熷害錛岃�屼笖鏈夌殑綾誨彲鑳芥棤娉曡緇囧叆鏂規硶錛屼緥濡傛垜浣跨敤jprofiler鏃朵竴鐩存病鏈夊浠?
鎴愬姛榪囷紝鎬諱細鏈変竴浜涚被鐨勯敊璇�?br />
<img src ="http://m.tkk7.com/anchor110/aggbug/330161.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://m.tkk7.com/anchor110/" target="_blank">灝忎竴璐ユ秱鍦?/a> 2010-08-29 13:13 <a href="http://m.tkk7.com/anchor110/articles/330161.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss>                                                                                                  <footer>
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