ram

How to Configure SBCL to Use More RAM When Started Through Emacs?

元气小坏坏 提交于 2019-12-04 08:35:46
问题 How can I configure SBCL so that it uses more memory than the default when I start it by using "M-x slime" in Emacs? From what I've seen online, the answer appears to be to call SBCL, passing the argument "--dynamic-space-size <size in MB>". Since I do not call SBCL directly, I do not know how to pass it arguments. I am using GNU Emacs 22.3.1 and SBCL 1.0.48 on Windows 7. I have no experience configuring either, so a novice's introduction would be appreciated. 回答1: The usual way is to set the

如何通过扩展手机内存来使手机发挥更好的性能

佐手、 提交于 2019-12-04 06:47:03
如何通过扩展手机内存来使手机发挥更好的性能 相信很多朋友的手机都遇到过这样的问题,发热烫手、红灯亮起、强制退出、无法操作……这可怎么办啊愁坏了我的好机友们。我们在上一篇文章《 如何应对手机应用闪退、强退的现象 》 http://www.morecomtech.com/community/article/jsfa/w2015100005.php 中也已经有了初步的探讨。 其实,出现这种状况很多时候是因为CPU占用率太高,也有可能是散热不行,但无论是什么原因导致,这都无一不提示我们,应该为手机降低降降负担了。今天,我们就来介绍一下通过扩展手机内存来为手机降低负担的方法。 在开始之前,先给大家推荐一篇科普文 《 手机显示出来的RAM比官方报的数据要小? 》 http://www.morecomtech.com/community/article/jsfa/w2015100004.php 。如果你也有这样的疑问,可以先看看这篇文章。 好了,开始!我们知道一般手机内存是无法改变的,手机一旦生产出来,手机内存就与手机结合一体了,像苹果和魅族都是融为一体的,连外部存储卡都没的装,这样一般人或者手机修理商都改不了的。所以,要扩大手机内存,首先就得,也可以通过Root来删除一些手机内置的无用系统软件,甚至是通过修改Data分区从根本上扩大内部储存空间留下更多空间,从而达到给手机减压的目的。 1

Java's RAM usage doesn't correspond to what the Task Manager says

ε祈祈猫儿з 提交于 2019-12-04 06:28:26
I have been playing with Java's JVM by making a 1024^3 (basically 1Gb) length byte array. I measured the RAM usage before, after the array creation and after the array's destruction by the garbage collector, using both the Task Manager (looking at the process) and this little snippet: public static void showMemory() { System.out.println("Memory used: " + (Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) / (1024.D * 1024.D) + "mB."); } The aforementioned code shows 2Mb, 1029Mb and 2Mb, respectively. -> It all seems normal. However, when looking at the TaskManager, the RAM

STS randomly crashes on ubuntu

耗尽温柔 提交于 2019-12-04 05:32:09
问题 Two months i experience crashing STS (3.7.3.RELEASE) on ubutnu 14.04. Before posting this, i made following steps: Reinstalled STS Reinstalled java-oracle (web8upd ppa) Changing workspace also made no difference The issue randomly appears after clicking on Server Tab (doesnt matter on server or not) and then it closes without any warning. The log file is huge, i leave link: http://pastebin.com/zFLQWf7u Hope someone can help me. Thanks 回答1: This looks like a bug to me that we might be able to

Can I access random data with random memory Addresses outside of my C++ Program

假如想象 提交于 2019-12-04 04:41:44
问题 If 2 programs are running, and one program stores a number at a memory address, and if I know that memory address, and hard code it into the 2nd program and print out the value at the address, would it actually get that info? Does C++ allow programs to access any data stored in RAM no matter if it is part of the program or not? 回答1: On system with no virtual memory management and no address space protection this would work. It would be undefined behavior from the point of view of the C

电脑的虚拟内存介绍

霸气de小男生 提交于 2019-12-04 01:57:55
虚拟内存是计算机系统内存管理的一种技术。电脑中所运行的程序均需经由内存执行,若执行的程序占用内存很大或很多,则会导致内存消耗殆尽,内存空间不足会影响程序的正常运行。 为解决该问题,Windows中运用了虚拟内存 技术,即 匀出一部分硬盘空间来充当内存使用 。当内存耗尽时,电脑就会自动调用硬盘来充当内存,以缓解内存的紧张。若计算机运行程序或操作所需的随机存储器(RAM)不足时,则 Windows 会用虚拟存储器进行补偿。它将计算机的RAM和硬盘上的临时空间组合。当RAM运行速率缓慢时,它便将数据从RAM移动到称为“分页文件”的空间中。将数据移入分页文件可释放RAM,以便完成工作。 温馨提示: 工具中”初始大小” 建议设置为您电脑内存,”最大值”可以根据您的使用需要设置; 虚拟内存会占用硬盘空间,根据硬盘剩余空间酌情设置; 如果您当前使用的是固态硬盘+机械硬盘(SSD+HDD )的硬盘组合, 虚拟内存设置在SSD固态硬盘分区上效果会比设置在机械硬盘分区效果好 ; 操作完成后需要将电脑重启后才能生效 ; 来源: https://www.cnblogs.com/chenshc/p/11827573.html

We need to preallocate. But MATLAB does not preallocate the preallocation?

穿精又带淫゛_ 提交于 2019-12-03 23:49:13
问题 While testing if any() short-circuits (it does!) I found out the following interesting behavior when preallocating the test variable: test=zeros(1e7,1); >> tic;any(test);toc Elapsed time is 2.444690 seconds. >> test(2)=1; >> tic;any(test);toc Elapsed time is 0.000034 seconds. However if I do: test=ones(1e7,1); test(1:end)=0; tic;any(test);toc Elapsed time is 0.642413 seconds. >> test(2)=1; >> tic;any(test);toc Elapsed time is 0.000021 seconds. Turns out that this happens because the variable

to SORT 1 BILLION of integer numbers with small physical memory

荒凉一梦 提交于 2019-12-03 21:07:47
Want to SORT 1 BILLION of integer numbers and my system has just 1 GB of RAM.What could be the fastest and efficient way to sort? Say we have an input in a text file an integer per line. We are using java program to sort. I have specified RAM as we cannot hold all the input integers in the RAM. Update: Integers are 7 digit numbers. The simplest thing to do is break the input into smaller files that can fit in memory and sort each, and then merge the results. Guido van Rossum has a good description of doing this in python while obviously not the same language the principle is the same. Integers

Configure Visual Studio to use more ram

做~自己de王妃 提交于 2019-12-03 14:41:46
I read a blog post at one time on how to increase the amount of RAM that Visual Studio will use. I am getting a "Not enough memory free" error message when trying to copy a small line of text in the visual studio editor. Does anybody know how or where I can configure this? I used to get that. I forget which of the many hotfixes got rid of it. https://connect.microsoft.com/VisualStudio/Downloads ajnatural Here is a blog posts matching your description: http://mkwec.de/2010/01/08/make-visual-studio-use-more-than-2-gig-of-memory/ 来源: https://stackoverflow.com/questions/3845188/configure-visual

Looking for a Perl module to store a Hash structure in shared RAM

最后都变了- 提交于 2019-12-03 13:41:03
问题 I'd like to store a data structure persistently in RAM and have it accessible from pre-forked web server processes in Perl. Ideally I would like it to behave like memcached but without the need for a separate daemon. Any ideas? 回答1: Use Cache::FastMmap and all you need is a file. It uses mmap to provide a shared in-memory cache for IPC, which means it is quite fast. See the documentation for possible issues and caveats. 回答2: IPC::SharedMem might fit the bill. 回答3: Mod_perl shares RAM on