chronos scheduler

SST-Structure Analysis of super simple task schedulerSST (Super Simple Task) is a Super Simple Task scheduler based on Task priority, preemptible, event-driven, RTC, and single stack. It is based on the idea of Rober Ward, miro Samek is implemented by re-programming in C. It is the basic idea of QK in QP. QK, the method for processing state machine events (QEP), the task registration and event storage and distribution functions (QF), the serial port d

Run the yum command in CentOS to install the crontab program of the scheduler.Overview With the "Task Scheduler", you can schedule any script, program, or document to run at a very convenient time. In general, it is to regularly execute a script or program.Common usage Timed ShutdownRegular check for updatesRegularly back up system configurations, databases, and logsRegular cleanup of junk filesCheck whether the installation is complete. # crontab-bas

2033 const struct sched_class rt_sched_class = {2034 .next = fair_sched_class,2035 .enqueue_task = enqueue_task_rt,2036 .dequeue_task = dequeue_task_rt,2037 .yield_task = yield_task_rt,2038 2039 .check_preempt_curr = check_preempt_curr_rt,（blank）2040 2041 .pick_next_task = pick_next_task_rt,2042 .put_prev_task = put_prev_task_rt,（blank）2043 2044 #ifdef CONFIG_SMP2045

practice this content. Screenshots show how you use unit test of Vs to ensure the quality of the classes you write. Show unit test's coverage for your written class Draw a UML diagram to show the relationships between entities (just draw a diagram) Describes the key of your algorithm (without listing the source code) and its uniqueness. Actually, there is nothing in the algorithm ...... And have no unique features. Because I was preparing to write a kind of intelligent elevator at the beginn

Virtual Web Host:Build LNMP ServiceInstallationNginxMARIADB, Mariadb-server, Mariadb-develPHP, PHP-FPM, Php-mysqlStart Nginx, MariaDB, FPM service;and test whether the LNMP is working properly.Build two Web services with different domain namesProxy Server:Build Nginx Service#vim/usr/local/nginx/conf/nginx.conf......HTTP {Server_tokens off;Client_header_buffer_size 1k;Large_client_header_buffers 4 4k;Include Mime.types;Default_type Application/octet-stream;Upstream Web {Server 201.1.2.100 weight=

/bin/run-parts, functions to execute all scripts/programs in a directory.Run-parts/etc/cron.hourly executes all scripts/programs under directory/etc/cron.hourly/.Run-parts below is the command to runThe first line means: 65 minutes a day after the boot to check whether the cron.daily file is executed, if not executed today to execute hisThe second line means: Every 7 days after the boot 70 minutes to check whether the cron.weekly file is executed, if not executed within a week to execute hisAnd

-mm-dd-hh-mm- SS;2 * * 7/bin/cp-a/etc/fstab/backup/fstab-' date +f '12 o'clock every night, get all lines in the/proc/meminfo file that begin with S or M, append to the/statistics/meminfo.txt file, and precede the daily message with a similar =============== separator line[[email protected] ~]# mkdir-pv/statisticsmkdir:created directory '/statistics ' 0 0 * * */bin/echo-e "===========\n" >>/statistics/meminfo.txt /bin/grep "^[s| M] "/proc/meminfo >>/statistics/meminfo.txtHow to use the Task

; default management of their own;-l:list, list the tasks;-r:remove to remove all tasks;-e:edit, edit, open a default editor for the current shell session to edit the cron task table;Ctrl+d Submitting a taskExample: I write to/etc/crontab1, every Monday to Saturday 3:20 A.M., run the CP command to archive the/etc/directory, storage location is/BACKUPS/ETC-YYYY-MM-DD;3 * * 1-6 root/bin/cp-a/etc//backups/etc-' date +%f ' >/dev/null 2>12, every Sunday 2:30 A.M., run the CP command to backup the/etc

protected] ~]# CRONTAB-L20 3 * * 1-6/bin/cp/etc-rpf/backups/etc-' file\%y-\%m-\%d 'title: Every Sunday wee 2 minutes, run the CP command to backup the/etc/fstab file, storage location is /backup/ Fstab-yyyy-mm-dd-hh-mm-ss[[email protected] ~]# CRONTAB-L30 2 * * 7/bin/cp/etc/fstab/backup/fstab-' file\%y-\%m-\%d-\%h-\%m-\%s 'q : every night , get all lines starting with S or M in the/proc/meminfo file , append to /statistics/ Meminfo.txt file, and the daily message is preceded by a similar =====

/sbin/backup.sh ' 14th per month, 4:10 "/bin/sh/usr/local/sbin/ backup_month.sh " execute every 8 hours ntpdate time.windows.com " "/bin/sh/usr/local/sbin/test2.sh" at 9 to 18 O ' Day exercise answer: 1. 201***echo "" >/var/log/slow.log 2. 03**0/bin/sh/usr/local/sbin/backup.sh 3.10 414**/bin/sh/usr/local/sbin/backup_month.sh 4.0 */8***ntpdatetime.windows.com 5.01,12,18 ***/bin/sh/usr/local/sbin/test.sh 6.09-18* **/bin/sh/usr/local/sbin/test2.s

notation:1. Specific time: All valid values in the range of valid values for a given point in time;0 5 3 9 *2. Wildcard Time: *, meaning "every ..." means, all valid values at a given point in time;* * * * *3. Discrete time: At a given point in time, use commas to separate;0 8,20 * * 1,3,54. Continuous time: At a given point in time, use a minus sign to separate;0 8 * 1-55. Step time: At a given point in time, use division sign to separate;*/2 * * * **/7 * * * * This method does not implement s

remove the parameter Rum-parts, you can write a script name to run, not the folder name.* * * * * Root run-parts/etc/cron.hourly4 * * * Root run-parts/etc/cron.daily4 * * 0 root run-parts/etc/cron.weekly4 1 * * Root run-parts/etc/cron.monthly[[email protected] etc]# ls cron*Cron.deny crontabCRON.D:0hourly SysstatCron.daily:Logrotate Makewhatis.cron Mlocate.cron prelink Readahead.cron tmpwatchCron.hourly:0anacron Mcelog.cronCron.monthly:Readahead-monthly.cronCron.weekly:99-raid-check[[email prot

Minute Minutes, the value range is (0-59) Hour Hours, the value range is (0-23) Day_of_month Date, value range is (0-31) Month month, the value range is (1-12), you can also use jan,feb,mar,apr ... Said Day_of_week Week, the value range is (0-6), of which Sunday is 0 or 7, can also be expressed in Sun,mon,tue,wed,thu,fri,sat Command The command to execute Sp

Today a shell script is written, and direct execution is possible.But it's not done with a task plan.The script is as follows:#!/bin/bashtime=0504timea=05Mysqd-f-u root DTS Tangled up half a day, then changed to absolute path on it.The script is as follows:#!/bin/bashtime=0504timea=05/usr/local/mysql/bin/mysqd-f-u root DTS This article is from the "Falling Star" blog, make sure to keep this source http://xiao987334176.blog.51cto.com/2202382/1642022Shell Script Task

Label:Crontab-eNo crontab for root-using an empty oneCrontab:installing New Crontab"/tmp/crontab. Jkmaak ": 1:bad minuteErrors in crontab file, can ' t install.Want to retry the same edit?Enter Y or NWant to retry the same edit? YCrontab:installing New Crontab"/tmp/crontab. Jkmaak ": 1:bad minuteErrors in crontab file, can ' t install.Want to retry the same edit?Enter Y or NWant to retry the same edit? Enter Y or NWant to retry the same edit?Enter Y or NWant to retry the same edit? YCrontab:inst

Reference:Not currently1 CreateEvent Event_demo2 onSchedule3Every1 DayStarts'2014-12-23 16:07:00'4 Do5 Insert intoDemo1 (col1, col2)Values(Date_format (Date_add (now), interval-1 Day),'%y-%m-%d'), Date_format (now (),'%y-%m-%d'));6 7 AlterEvent Event_demo8 onSchedule9Every1 DayStarts'2014-12-23 16:08:00'Ten Do One Insert intoDemo1 (col1, col2)Values(Date_format (Date_add (now), interval-1 Day),'%y-%m-%d'), Date_format (now (),'%y-%m-%d')); A - -Show variables like '%event%'; the - D

be executed here should be a standard PL/SQL code. If Program_type is specified earlier as"stored_procedure", the action to be performed here should be a stored procedure defined in Oracle (with a Java stored procedure), if the previous specified Program_type is"executable", the command line information for the external command (with path information) should be specified here; number_of_arguments: Specifies the number of supported parameters and the default value is 0 without parameters. Each p

(job_class_name = ' No_logging_class ', Resource_consumer_group = > ' Default_consumer_group ', logging_level = Dbms_scheduler. Logging_off); end;--Disable the job itself log, modify the log level Logging_level properties:BEGIN dbms_scheduler.set_attribute (' job_name ', ' logging_level ', Dbms_scheduler. Logging_off); END;--1) Dbms_scheduler. Logging_off: Turn off logging function;--2) Dbms_scheduler. Logging_runs: The operation information of the task is recorded;--3) Dbms_scheduler. Logging_

relevant parameters and commands/P /M /d [{+|-}][{/C for all files to execute the specified command, the command body must be in double quotation marks ("), the default is" cmd/c echo @file ". The "cmd/c del/f @path" is used above to delete the specified file. (Here the @file and @path are variables and will be explained later.) ）Here are the parameters that are used in the above:@PATH: Represents the full path of the file. http://blog.csdn.net/babauyang/article/details/25742797Automatically de

The quartz scheduler executes the scheduling task jobdetail in multi-thread mode. The default thread pool size is 10. That is to say, if 10 jobs in the scheduler are working (the thread is not finished ), even if jobdetail is triggered, the new jobdetail will not be executed. That is to say, the blocking condition is that the number of jobdetail running in the scheduler