首页 \ 问答 \ G1充分的时间很多时间(G1 full gc time much time)

G1充分的时间很多时间(G1 full gc time much time)

我在第eigth核心和264G memeory linux机器中使用了hazelcast。下面是我的启动脚本。

nohup java -Djava.rmi.server.hostname=172.19.141.2 -server -Xms40G -Xmx40G -XX:+PrintGCDateStamps -XX:+PrintGCDetails -Xloggc:./logs/gc.log -Xss256k -XX:PermSize=128M -XX:MaxPermSize=512M  -Djava.util.Arrays.useLegacyMergeSort=true -XX:+UseG1GC -XX:G1HeapRegionSize=32 -XX:MaxGCPauseMillis=600 -XX:InitiatingHeapOccupancyPercent=70 -XX:+HeapDumpOnOutOfMemoryError -Dhazelcast.jmx=true -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=2222 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.net.preferIPv4Stack=true -Djava.ext.dirs=../lib:../lib-business:../lib-other com.hazelcast.core.server.StartServer &

我的问题是,完整的GC需要大约12秒,这是不可接受的。我试图设置-XX:MaxGCPauseMillis = 600参数。但它没有用。这是gc日志。

2017-04-28T21:38:17.795+0800: 9237.910: [Full GC (Allocation Failure)  27G->7361M(40G), 15.6893722 secs]
[Eden: 1024.0K(2010.0M)->0.0B(2048.0M) Survivors: 38.0M->0.0B Heap: 27.5G(40.0G)->7361.6M(40.0G)], [Metaspace: 17817K->17726K(18432K)]
[Times: user=23.49 sys=0.16, real=15.69 secs] 

希望得到你的帮助。


I am using hazelcast in a eigth core and 264G memeory linux machine.Next is my start script.

nohup java -Djava.rmi.server.hostname=172.19.141.2 -server -Xms40G -Xmx40G -XX:+PrintGCDateStamps -XX:+PrintGCDetails -Xloggc:./logs/gc.log -Xss256k -XX:PermSize=128M -XX:MaxPermSize=512M  -Djava.util.Arrays.useLegacyMergeSort=true -XX:+UseG1GC -XX:G1HeapRegionSize=32 -XX:MaxGCPauseMillis=600 -XX:InitiatingHeapOccupancyPercent=70 -XX:+HeapDumpOnOutOfMemoryError -Dhazelcast.jmx=true -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=2222 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.net.preferIPv4Stack=true -Djava.ext.dirs=../lib:../lib-business:../lib-other com.hazelcast.core.server.StartServer &

My problem is that the full gc takes about 12 seconds,which is unacceptable.I have tried to set -XX:MaxGCPauseMillis=600 param.But it is not useful.This is the gc log.

2017-04-28T21:38:17.795+0800: 9237.910: [Full GC (Allocation Failure)  27G->7361M(40G), 15.6893722 secs]
[Eden: 1024.0K(2010.0M)->0.0B(2048.0M) Survivors: 38.0M->0.0B Heap: 27.5G(40.0G)->7361.6M(40.0G)], [Metaspace: 17817K->17726K(18432K)]
[Times: user=23.49 sys=0.16, real=15.69 secs] 

Wish for your help.


原文:https://stackoverflow.com/questions/43682401
更新时间:2023-02-13 19:02

最满意答案

使用CSS,Ext会在计算组件大小并将其布局时考虑到它。

首先,在您的面板上放置一个自定义CSS类:

var p = new Ext.Panel({
    title: 'My Panel',       
    width:400,
    border: true //default also true.

    ,cls: 'my-panel'
});

风格吧:

.x-panel.my-panel {
    border: 5px solid red;
}

Use CSS, Ext will account for it when calculating the component size and laying it out.

First, put a custom CSS class on your panel:

var p = new Ext.Panel({
    title: 'My Panel',       
    width:400,
    border: true //default also true.

    ,cls: 'my-panel'
});

Then style it:

.x-panel.my-panel {
    border: 5px solid red;
}

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