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- 来自专栏技术杂记
fio基础9
randrepeat=boolForrandomIOworkloads,seedthegeneratorinapredictablewaysothatresultsarerepeatableacrossrepetitions.Defaultstotrue.randseed=intSeedtherandomnumbergeneratorsbasedonthisseedvalue,tobeabletocontrolwhatsequenceofoutputisbeinggenerated.Ifnotset,therandomsequencedependsontherandrepeatsetting.fallocate=strWhetherpre-allocationisperformedwhenlayingdownfiles.Acceptedvaluesare:noneDonotpre-allocatespaceposixPre-allocateviaposix_fallocate()keepPre-allocateviafallocate()withFALLOC_FL_KEEP_SIZEset0Backward-compatiblealiasfor'none'1Backward-compatiblealiasfor'posix'Maynotbeavailableonallsupportedplatforms.'keep'isonlyavailableonLinux.IfusingZFSonSolaristhismustbesetto'none'becauseZFSdoesn't support it. Default: 'posix'. fadvise_hint=bool By default, fio will use fadvise() to advise the kernel on what IO patterns it is likely to issue. Sometimes you want to test specific IO patterns without telling the kernel about it, in which case you can disable this option. If set, fio will use POSIX_FADV_SEQUENTIAL for sequential IO and POSIX_FADV_RANDOM for random IO. fadvise_stream=int Notify the kernel what write stream ID to place these writes under. Only supported on Linux. Note, this option may change going forward. size=int The total size of file io for this job. Fio will run until this many bytes has been transferred, unless runtime is limited by other options (such as 'runtime', for instance, or increased/decreased by 'io_size'). Unless specific nrfiles and filesize options are given, fio will divide this size between the available files specified by the job. If not set, fio will use the full size of the given files or devices. If the files do not exist, size must be given. It is also possible to give size as a percentage between 1 and 100. If size=20% is given, fio will use 20% of the full size of the given files or devices. io_size=int io_limit=int Normally fio operates within the region set by 'size', which means that the 'size' option sets both the region and size of IO to
70150编辑于 2022-04-24 - 来自专栏技术杂记
Codis 基础9
添加 Redis Server Group 准备配置文件 [root@h102 codis]# grep -v "^#" extern/redis-2.8.21/redis.conf | grep -v "^$" > /etc/codis/redis_s.conf [root@h102 codis]# grep -v "^#" extern/redis-2.8.21/redis.conf | grep -v "^$" > /etc/codis/redis2.conf [root@h102 codis
35620编辑于 2022-03-22 - 来自专栏技术杂记
Snort 基础9
解决方法 : 安装 pcre.x86_64 和 pcre-devel.x86_64 软件包
38020编辑于 2022-05-03 - 来自专栏技术杂记
SQLite 基础9
分离数据库 无法分离 main 和 temp 数据库 sqlite> .databases seq name file --- --------------- ---------------------------------------------------------- 0 main /usr/local/sqlite3.11/bin/
24210编辑于 2021-12-01 - 来自专栏技术杂记
memcached基础9
stats查看状态statsSTAT pid 8917STAT uptime 1183STAT time 1442996635STAT version 1.4.24STAT libevent 1.4.13-stableSTAT pointer_size 64STAT rusage_user 0.014997STAT rusage_system 0.105983STAT curr_connections 12STAT total_connections 14STAT connection_structures
21410编辑于 2022-06-26 - 来自专栏技术杂记
Logstash 基础9
打开本地的 tcp udp 5000端口 标记类型为 syslog filter中作判断如果类型是 syslog 拆分解析信息 添加 received_at received_from 字段 使用 syslog_pri { } 来处理 定义 syslog_timestamp 的格式 输出到ES 以 rubydebug 的格式输出到终端 启动 Logstash [root@h102 etc]# /opt/logstash/bin/logstash -f logstash-syslog.conf Setti
28110编辑于 2022-02-10 - 来自专栏技术杂记
etcd 基础9
刷新目录过期时间 [root@docker ~]# date +%s ;curl http://127.0.0.1:2379/v2/keys/testdir -XPUT -d ttl=10 -d dir=true 1454394195 {"action":"set","node":{"key":"/testdir","dir":true,"expiration":"2016-02-02T06:23:25.962070512Z","ttl":10,"modifiedIndex":85,"createdInde
25810编辑于 2022-01-20 - 来自专栏技术杂记
Tengine基础9
upstream 是nginx 负载均衡的主要模块，它提供了一个简单方法来轮询后端的服务器
44220编辑于 2022-05-03 - 来自专栏技术杂记
UnrealIRCd 基础9
error: /root/unrealircd/conf/unrealircd.conf:378: set::cloak-keys: (key 2) Keys should be mixed a-zA-Z0-9, error: /root/unrealircd/conf/unrealircd.conf:379: set::cloak-keys: (key 3) Keys should be mixed a-zA-Z0-9, IRCd configuration failed to pass testing 分别为： 1.要求修改操作员角色的用户名和密码 2.cloak-keys 必须得相互不一样，并且由 a-zA-Z0-9
42820编辑于 2021-11-29 - 来自专栏技术杂记
RabbitMQ基础9
日志信息 =INFO REPORT==== 23-Oct-2015::16:52:50 === Starting RabbitMQ 3.5.6 on Erlang R14B04 Copyright (C) 2007-2015 Pivotal Software, Inc. Licensed under the MPL. See http://www.rabbitmq.com/ =INFO REPORT==== 23-Oct-2015::16:52:50 === node : rabbi
32820编辑于 2022-05-04 - 来自专栏技术杂记
Consul 基础9
我们还可以使用 DNS API 结合 tag 来过滤服务 [root@h104 ~]# dig @127.0.0.1 -p 8600 rails.web.service.consul ; <<>> DiG 9.9.4-RedHat-9.9.4-29.el7_2.1 <<>> @127.0.0.1 -p 8600 rails.web.service.consul ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<
38610编辑于 2021-12-01 - 来自专栏技术杂记
nginx基础9
启动 查看配置 [root@h102 conf]# grep -v "#" /usr/local/nginx/conf/nginx.conf | grep -v "^$" worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on;
19010编辑于 2022-05-12 - 来自专栏技术杂记
HAproxy 基础9
启动haproxy [root@h102 ~]# /usr/local/haproxy/sbin/haproxy -f /etc/haproxy/transparent_proxy.cfg ... ... ... ---------- [root@h102 ~]# netstat -ant | grep 1234 tcp 0 0 0.0.0.0:1234 0.0.0.0:* LISTEN [root@h1
24510编辑于 2022-01-19 - 来自专栏技术杂记
Docker 基础9
可见 docker.service 是依赖于 docker.socket 的，但是并不必要开启
33320编辑于 2022-02-09 - 来自专栏技术杂记
ZooKeeper 基础9
redo 再次执行之前命令 Tip: 历史命令的保持是在当前会话中，不论此时是否已经成功连接服务 [zk: localhost:2181(CONNECTED) 20] history 10 - ls 11 - ls / 12 - create /test test 13 - get /test 14 - ls / 15 - close 16 - ls / 17 - connect localhost:2181 18 - ls / 19 - help 20 - history [zk: localhos
32220编辑于 2022-03-25 - 来自专栏编程基础
C编程基础-基础篇 9
struct #include <stdio.h> int main() { struct Contacts { char name[100]; int age; char mobile[12]; }; struct Contacts person1 = {"John", 30, }; printf("name: %s, age: %d, mobile: %s\n", person1.name, person1.age, p
32031发布于 2021-02-26 - 来自专栏编程基础
Go编程基础-基础篇 9
Go 语言中只有值传递，没有引用传递，想要指针作为参数传入函数中，只能传递地址进入函数进行修改
34511发布于 2021-03-02 - 来自专栏侯哥的Python分享
python基础-函数(9)
定义一个具有两个形式参数的函数 def sum(a,b):#a,b就是形参 result = a+b print(result) #sum()函数的调用 sum(4,5)#4,5就是真实参数 运行结果为：9 def sum(a,b): result = a+b return result#result就是程序要返回出去的值 res = sum(4,5) print(res) 运行结果为：9
66030发布于 2019-09-11 - 来自专栏瓜大三哥
matlab GUI基础9
数字图像的采集 一、USB摄像头设置 在matlab中通过函数imaqhwinfo()检测用户的matlab软件是否安装了图像采集工作箱，并显示图像采集工具箱的版本。USB摄像头的适配器为winvideo。 二、图像和视频的采集 在matlab中，通过函数videoinput()建立摄像头对象后，可以采用函数preview()进行视频采集和显示。该函数的调用格式为：preview(obj)，其中obj为摄像头对象。调用函数stoppreview()暂停视频的采集和显示，利用函数closepreview()关
92190发布于 2018-02-26 - 来自专栏技术杂记
Varnish 基础概览9
##varnishtop可以产生下列形式的 top 统计信息list length 275 h101.temp 3.20 VCL_return fetch 3.20 VCL_return deliver 2.4
18040编辑于 2022-06-30
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