As a result, you may not realize any benefits from using compressed pointers with large Java heap sizes. -XX:OnError=string Sets a custom command or a series of semicolon-separated commands to run when an irrecoverable error occurs. If the string contains spaces, then it must be enclosed ...
// These methods should be called whenever direct memory is allocated or// freed. They allow the user to control the amount of direct memory// which a process may access. All sizes are specified in bytes.staticvoidreserveMemory(longsize){synchronized(Bits.class) {if(!memoryLimitSet && VM.i...
Security Tools The following security tools set security policies on your system and create applications that can work within the scope of security policies set at remote sites: ⢠keytool: You use the keytool command and options to manage a keystore (database) of cryptographic keys, ...
gcoldcapacity 年老代行为统计。Statistics of the sizes of the old generation. gcpermcapacity 永生代行为统计。Statistics of the sizes of the permanent generation. printcompilation HotSpot编译方法统计。HotSpot compilation method statistics. option 参数详解 -class 监视类装载、卸载数量、总空间以及耗费的时间 ...
IANA Data 2017c JDK 8u161 contains IANA time zone data version 2017c. For more information, refer to Timezone Data Versions in the JRE Software. New Feature: Support DHE sizes up to 8192-bits and DSA sizes up to 3072-bits Enhance the JDK security providers to support 3072-bit Diffie...
Object packing functionality has been added to minimize the wasted space between data types of different sizes. This is primarily a benefit in 64-bit environments, but offers a small advantage even in 32-bit VMs. For example: public class Button { ...
// which a process may access. All sizes are specified in bytes. static void reserveMemory(long size) { synchronized (Bits.class) { if (!memoryLimitSet && VM.isBooted()) { maxMemory = VM.maxDirectMemory(); memoryLimitSet = true; ...
8037821 hotspot compiler Account for trampoline stubs when estimating code buffer sizes 8038048 hotspot compiler assert(null_obj->escape_state() == PointsToNode::NoEscape,etc) runThese -full 8038181 hotspot compiler Can't build product VM without precompiled header ...
本文主要针对 Hotspot VM 中“CMS + ParNew”组合的一些使用场景进行总结。重点通过部分源码对根因进行分析以及对排查方法进行总结,排查过程会省略较多。另外,本文专业术语较多,有一定的阅读门槛,如未介绍清楚,还请自行查阅相关材料。 本文总字数 2 万左右(不包含代码片段),整体阅读时间约 30min ,文章较长,可以选择...
* The result is equal to the last field offset + last field length + all array sizes + all child objects deep sizes * @return Deep object size */public long getDeepSize() {//return length + arraySize + getUnderlyingSize( arraySize != 0 );returnaddPaddingSize(arraySize + getUnderlying...