memory

linux性能监控——CPU、Memory、IO、Network

由 。_饼干妹妹 提交于 2020-01-08 19:18:51
一、CPU 1、良好状态指标 CPU利用率：User Time <= 70%，System Time <= 35%，User Time + System Time <= 70%。 上下文切换：与CPU利用率相关联，如果CPU利用率状态良好，大量的上下文切换也是可以接受的。 可运行队列：每个处理器的可运行队列<=3个线程。 2、监控工具 vmstat $ vmstat 1 procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st 14 0 140 2904316 341912 3952308 0 0 0 460 1106 9593 36 64 1 0 0 17 0 140 2903492 341912 3951780 0 0 0 0 1037 9614 35 65 1 0 0 20 0 140 2902016 341912 3952000 0 0 0 0 1046 9739 35 64 1 0 0 17 0 140 2903904 341912 3951888 0 0 0 76 1044 9879 37 63 0 0 0 16 0 140 2904580

How to clear memory to prevent “out of memory error” in excel vba?

由 99封情书 提交于 2020-01-08 17:18:40
问题 I am running VBA code on a large spreadsheet. How do I clear the memory between procedures/calls to prevent an "out of memory" issue occurring? Thanks 回答1: The best way to help memory to be freed is to nullify large objects: Sub Whatever() Dim someLargeObject as SomeObject 'expensive computation Set someLargeObject = Nothing End Sub Also note that global variables remain allocated from one call to another, so if you don't need persistence you should either not use global variables or nullify

How to clear memory to prevent “out of memory error” in excel vba?

由 二次信任 提交于 2020-01-08 17:16:10
问题 I am running VBA code on a large spreadsheet. How do I clear the memory between procedures/calls to prevent an "out of memory" issue occurring? Thanks 回答1: The best way to help memory to be freed is to nullify large objects: Sub Whatever() Dim someLargeObject as SomeObject 'expensive computation Set someLargeObject = Nothing End Sub Also note that global variables remain allocated from one call to another, so if you don't need persistence you should either not use global variables or nullify

How to tune Tomcat 5.5 JVM Memory settings without using the configuration program

由 强颜欢笑 提交于 2020-01-08 12:27:41
问题 I need to configure Tomcat memory settings as part of a larger installation, so manually configuring tomcat with the configuration app after the fact is out of the question. I thought I could just throw the JVM memory settings into the JAVA_OPTS environment variable, but I'm testing that with jconsole to see if it works and it... doesn't. As per the comment below, CATALINA_OPTS doesn't work either. So far, the only way I can get it to work is via the Tomcat configuration GUI, and that's not

How to tune Tomcat 5.5 JVM Memory settings without using the configuration program

由 ↘锁芯ラ 提交于 2020-01-08 12:27:40
问题 I need to configure Tomcat memory settings as part of a larger installation, so manually configuring tomcat with the configuration app after the fact is out of the question. I thought I could just throw the JVM memory settings into the JAVA_OPTS environment variable, but I'm testing that with jconsole to see if it works and it... doesn't. As per the comment below, CATALINA_OPTS doesn't work either. So far, the only way I can get it to work is via the Tomcat configuration GUI, and that's not

How to tune Tomcat 5.5 JVM Memory settings without using the configuration program

由 天涯浪子 提交于 2020-01-08 12:27:15
问题 I need to configure Tomcat memory settings as part of a larger installation, so manually configuring tomcat with the configuration app after the fact is out of the question. I thought I could just throw the JVM memory settings into the JAVA_OPTS environment variable, but I'm testing that with jconsole to see if it works and it... doesn't. As per the comment below, CATALINA_OPTS doesn't work either. So far, the only way I can get it to work is via the Tomcat configuration GUI, and that's not

How do I monitor the computer's CPU, memory, and disk usage in Java?

由 ☆樱花仙子☆ 提交于 2020-01-08 09:33:13
问题 I would like to monitor the following system information in Java: Current CPU usage** (percent) Available memory* (free/total) Available disk space (free/total) *Note that I mean overall memory available to the whole system, not just the JVM. I'm looking for a cross-platform solution (Linux, Mac, and Windows) that doesn't rely on my own code calling external programs or using JNI. Although these are viable options, I would prefer not to maintain OS-specific code myself if someone already has

Function should clean data to half the size, instead it enlarges it by an order of magnitude

由 对着背影说爱祢 提交于 2020-01-08 08:06:11
问题 This has been driving me nuts all week weekend. I am trying merge data for different assets around a common timestamp. Each asset's data is a value in dictionary. The data of interest is stored in lists in one column, so this needs to be separated first. Here is a sample of the unprocessed df: data['Dogecoin'].head() market_cap_by_available_supply price_btc price_usd volume_usd 0 [1387118554000, 3488670] [1387118554000, 6.58771e-07] [1387118554000, 0.000558776] [1387118554000, 0.0] 1

CSE 109: Systems Programming CSE 109: Systems Programming

由 浪尽此生 提交于 2020-01-08 08:03:51
代做CSE 109作业、代做C/C++编程设计作业、代写Systems Programming作业、代写C/C++实验作业 CSE 109: Systems Programming Fall 2018 Program 4: Due on Sunday, October 21st at 9pm on CourseSite. Checkpoint Due: Due on Monday, October 15th at 9pm via checkpointer. Collaboration Reminder: 1. You must submit your own work. 2. In particular, you may not: (a) Show your code to any of your classmates (b) Look at or copy anyone else’s code (c) Copy material found on the internet (d) Work together on an assignment Assignment: Preparation 1. Make a Prog4 directory in your class folder. 2. Create the files Allocator.c, Allocator.h,

In c program, why free memory of string (which copy from strcpy) in osx is not woking? [duplicate]

由 此生再无相见时 提交于 2020-01-08 02:20:17
问题 This question already has answers here : Freeing malloced structure in a function (4 answers) Closed 2 years ago . my osx version is 10.12, when I copy string from origin string , then free it, it's not working, But in linux(centos 6.2) is ok, I print copy is invalid. I don't find the reason, It's really confused me. here is code: #include <string.h> #include <stdlib.h> #include <stdio.h> int main(){ char *copy; char *origin = "tutorialspoint"; copy = (char *) malloc(15); strcpy(copy, origin)
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