Tag：Utilization Rate
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Time：2021-9-18
Command introduction The SAR command is used to comprehensively obtain the performance data of the system, such as CPU, run queue, disk I / O, paging (swap area), memory, CPU interrupt and network. Syntax format sar -[ options ] time_interval number_of_tines_to_display Option description -A # Summarize all reports -a # View file read / write usage -B # View the […]
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Time：2021-9-17
problem Will infinite loop while cause CPU utilization to soar?Will frequent use of young GC lead to soaring CPU utilization?Is CPU usage high for applications with a large number of threads?What is the number of threads in applications with high CPU utilization?Will threads in blocked state cause CPU utilization to soar?Is CPU consumption us or […]
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Time：2021-9-16
phenomenon Recently, I took over a colleague’s project. One day, the response time of the interface suddenly increased a lot, from tens of MS to tens of seconds. First, check the log on the machine. There is a timeout when calling the third-party interface and querying the database. Check the third-party interface monitoring and database […]
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Time：2021-9-4
This article is compiled from: Kangaroo cloud technology collection – abnormal CPU load handling of a customer’s production server Data stack is a cloud native one-stop data platform PAAS. We have an interesting open source project on GitHub and gitee: flinkx. Flinkx is a unified data synchronization tool for batch flow based on Flink. It […]
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Time：2021-8-21
1、 Installation of alertmanager 1. Download 2. Installation #Download different installation packages from different platforms wget https://github.com/prometheus/alertmanager/releases/download/v0.21.0/alertmanager-0.21.0.darwin-amd64.tar.gz #Decompress tar zxvf alertmanager-0.21.0.darwin-amd64.tar.gz #Rename mv alertmanager-0.21.0.darwin-amd64.tar.gz alertmanager 3. Start #When starting, specify the path of the configuration file and the start port ./alertmanager –config.file=alertmanager.yml –web.listen-address=”:9093″ #Display help information ./alertmanager –help 4. Integration of alertmanager and Prometheus Modify […]
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Time：2021-8-19
Hello, Hello, monkey, I’m writing the code into a bug. Official account: bigheadit technology. Original is not easy, but welcome to reprint. I don’t know why I woke up so early today. Maybe it’s fate. When I wake up and look at wechat, I find that the disk utilization rate of the online server exceeds […]
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Time：2021-7-30
preface: In daily work, whenever you want to deal with the server, the artifact that must be inseparable is shell script. Shell script can greatly improve the work efficiency of engineers and avoid hand errors caused by some factors. So today, I’ll share 28 shell scripts in a circle. I hope they can help you. […]
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Time：2021-7-27
Summary:Today, let’s talk about how DLI implements monitoring alarms to improve the overall operation and maintenance capability, so as to better provide customers with serverless DLI. DLI is a serverless big data computing service that supports multi-mode engine. Operation and maintenance free is also an important feature when facing customers as a serverless cloud service. […]
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Time：2021-7-27
This article is transferred from @twt community, [author] Boya. During this period, an application test server has a high CPU and cannot log in normally. The details are as follows: At 6:00 p.m. on February 28, the developer suddenly sent me a screenshot saying that 187 server could not log in and asked me if […]
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Time：2021-7-24
introduce Oshi is Java’s free JNA based (native) operating system and hardware information base. It does not need to install any other native libraries, and aims to provide a cross platform implementation to retrieve system information, such as OS version, process, memory and CPU utilization, disk and partition, device, sensor, etc. Functions supported by oshi […]
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Time：2021-7-23
Phpspreadsheet memory overflow processing | memory optimization Set cache Save memory:https://phpspreadsheet.readth… Here we use use Symfony\Component\Cache\Adapter\FilesystemAdapter; use Symfony\Component\Cache\Psr16Cache; … $adapter = new FilesystemAdapter(‘excel’, 60*60*10, storage_path(‘framework/cache/data’)); $cache = new Psr16Cache($adapter); \PhpOffice\PhpSpreadsheet\Settings::setCache($cache); Specify read sheet Because by default, we only need to read one worksheet. If you have multiple worksheets but do not need to load them […]
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Time：2021-6-3
Why is redis so fast? Conclusion there are three points, as we all know, here is mainly analysis. First of all, the first point Redis is memory access, so it’s fast Of course, we all know this, so it’s not the point IO intensive and CPU intensive Generally, we divide the task into two […]
