ceph file system performance

format. Currently, you must configure the tracing application and the path to save the log file by editing the system registry. 4. Alarm When the performance monitoring data of a counter reaches the preset threshold, the Perfmon alarm is triggered. The alarm refers to the preset action, such as sending emails and running specified commands. You can also set the

Some unnecessary services are enabled by default in various major linux releases. For Ubuntu, we can use the method of selective shutdown to accelerate startup and improve system performance. Here we install a software: sudoapt-getinstallsysv-rc-conf and start it like this: sudosysv-rc-conf in this software, you can use the keyboard's arrow key to move and use spaces to select, you can also select the servi

1. Conclusion:The SAR command is a common tool for analyzing system performance on Linux systems, and can be used to view CPU, memory, disk IO, file read and write, system calls,2, the SAR will have a scheduled task, regularly record the current system information to/VAR/LOG

file system or swap partitions Bi Number of disk blocks that are replaced by a file system or swap partition to ram The output of the vmstat below shows that a large number of virtual storage is used at the peak of an I/O application: From the above output, we can get the following inference: A larg

communication settings (NIC, IP address, route table, ping,/etc/hosts, DNS settings, and so on ).(11) Is there any data protection method such as raid10/RAID5? Whether there is hotSpare.(12) whether the system dump settings are correct.(13) check whether the system parameters are correct.(14) Check whether rootvg is an image.(15) Check errdemon? Whether srcmstr is running normally.(16) Check the IDC enviro

.pptxWhy does performance affect the company's earnings? The root cause is also that performance affects the user experience. Loading delays, operation Lag, and so on will affect the user experience. In particular, mobile users have low tolerance for page response delays and connection interruptions. Imagine you're holding a cell phone. To open a webpage to see a message but load a half-day mood, you probab

Introduction A few days ago, w3ctech's entry into the famous enterprise-Baidu frontend Fex session once said that he could build his own front-end performance monitoring system seven days after listening to the lecture. Since he said it, he could not give up. In the previous article, the beauty of front-end data I believe everyone has a certain understanding of front-end data. The following describes the

IntroductionBefore the W3ctech into the name enterprise-Baidu front-end FEX "bombast" said that after seven days after the lecture can build their own front-end performance monitoring system, since said out of can not promise. The beauty of front-end data in a previous article believe that we have a certain understanding of the front-end data, the following is a detailed description of the

Sysbench-benchmarkSysBench is an open-source, cross-platform, modular, and multi-threaded performance testing tool that runs on databases with high load, you can perform performance tests on CPU/memory/thread/IO/database. Performance parameters used to evaluate the operating system... sysbench-benchmark SysBench is an

: CentOS 5:partprobe [DEVICE] CentOS 6, 7: Partx Kpartx PARTX command: Partx DEVICE Partx-a DEVICE Partx-a-N m:n DEVICE M M: : N KPARTX command: Kpartx-af DEVICE Linux File System Management File system: Vfs:virtual File System Li

RsizeWsize The block size of reading (rsize) and writing (wrize). This setting can affect the buffer storage of data transmitted between the client and the server. Generally, if the local area network (LAN) and the client and server have enough memory, this value can be set to a larger value (65535 bytes ), improving the buffer block improves the transmission capability of the NFS file system.