STATS commandTraversing the memcached cache object (C #)For performance considerations, memcached does not provide the traversal function, but we can use the following two stats commands to obtain all the cache objects.1. stats itemsDisplays the number of items in each slab.2. stats cachedump slab_id limit_numDisplays
Did you consider moving the screen size and properties before you made the app data graphic design? Have you considered visualizing data graphs to enhance your app temperament? Have you considered the difference between the display of data graphs on app and Web side? Perhaps you have thought about it, but as a popular science article, or to start from the most basic.
What are the main apps with data graphs?
Earlier, yoyo through the app Store, Mobilepattern, dribbble crazy Search map, accumu
Stats command
Traversing memcached Cache Objects (C #) reproduced in the Grass church
For performance reasons, memcached does not provide traversal functionality, but we can get all of the cached objects through the following two stats commands.
1, stats items
Displays the number of item in each slab.
2, stats cached
there is a direct correspondence between the v$ view in the SGA and the corresponding Statspack table, for example:
V$sysstat--------->stats$sysstat
Sql> DESC V$sysstat
Name Null? Type
----------------------------------------- -------- ----------------------------
statistic# number
NAME VARCHAR2 (64)
CLASS number
VALUE number
Sql> DESC Stats$sysstat
Name Null? Type
------------------------
/ss_get_mysql_stats.php /var/www/html/cacti/scripts/Edit the file to confirm that the user name and password are correct:
vi /var/www/html/cacti/scripts/ss_get_mysql_stats.php
$mysql_user = 'cacti';$mysql_pass = 'cacti';
Import template: Open the cactiy page --> Console --> Import Templates --> browse and add
Import result:
Import ResultsCacti has imported the following items:CDEF[success] Percona Turn Into Bits CDEF [new][success] Percona Negate CDEF [new]GPRINT Preset[success] Percona MySQL
/ss_get_by_ssh.php./usr/share/cacti/scripts/ss_get_mysql_stats.php./usr/share/cacti/scripts/ss_get_rds_stats.py
Now we only need two mysql files:
ss_get_mysql_stats.phpcacti_host_template_percona_mysql_server_ht_0.8.6i-sver1.1.4.xml
Copy ss_get_mysql_stats.php to the cacti directory:
cp ./usr/share/cacti/scripts/ss_get_mysql_stats.php /var/www/html/cacti/scripts/
Edit the file to confirm that the user name and password are correct:
vi /var/www/html/cacti/scripts/ss_get_mysql_stats.php
$m
/cacti/scripts/ss_get_mysql_ stats.php./usr/share/cacti/scripts/ss_get_rds_stats.pyNow as long as MySQL's two files:Ss_get_mysql_stats.phpcacti_host_template_percona_mysql_server_ht_0.8.6i-sver1.1.4.xmlCopy the ss_get_mysql_stats.php to the cacti directory:CP./usr/share/cacti/scripts/ss_get_mysql_stats.php/var/www/html/cacti/scripts/Edit the file to verify that the user name and password are correct:vi/var/www/html/cacti/scripts/ss_get_mysql_stats.php$mysql _user = ' cacti '; $mysql _pass = ' ca
Document directory
Windows Installation
Linux Installation
Install memcached
Start memcached
Stop memcached (locate the process and kill the process)
1. Add
2. Delete
1. Get
2. Gets
3. CAS
1. Stats
2. Stats items
3. Stats cachedump slab_id limit_num
4. other stats commands
1. append
2. prepend
3. f
Else Run_value
End
From
@ Fillfactor
Select Db_name () As Dbname, Quotename (S. Name) As Cchemaname, Quotename (O. Name) As Tablename,I. Name As Indexname,Stats. index_type_desc As Indextype,Stats. page_count As [ Pagecount ] ,Stats. partition_number As Partitionnumber, Case When I. fill_factor > 0 Then I. fill_factor Else @ Defafilfillfactor
Delete the corresponding data in the stats $ snapshot data table. The data in other tables will be deleted horizontally:
SQL> select max (snap_id) from stats $ snapshot;MAX (SNAP_ID)------------166SQL> delete from stats $ snapshot where snap_id 143 rows deleted
You can change the snap_id range to retain the data you need.
During the above deleti
At first, in the Internet to find a lot of template reference documents, are not suitable for their own environment, their own groping to find out, finally made.Thank you very much for the 51 technology "YANGZHIMINGG" provided by the monitoring template, suitable for yourself.First, to "http://down.51cto.com/data/382105" Download the template, download the decompression, the "ss_get_mysql_stats.php" script to upload to the server "/usr/share/cacti/site /"belowsudo cp/tmp/ss_get_mysql_stats.php/u
ncols = 3. the Function creates five rows (default) the multiplication table of the three columns (provided values.Function: return data
When using this method, what people want most is not always a multiplication table. You may want to complete a calculation and return the calculation result value to the calling code. To achieve these two goals, you need to call the call methods (subroutines) and return values (functions) that do not return any data respectively ). However, in Python, you do n
Question: I want to understand when to export and import by dbms_stats statistics and learn when it is a good idea to export and import statistics.
Answer: importing and exporting statistics for the CBO and the systems stats (external system statistics for CPU, I/O. etc) and useful in a variety of areas:
Export production into test to make test systems "look like" large systems for execution plan generation ".
Export/imports can be used to control
calling code. Sometimes to achieve these two purposes, you need to call methods (functions) that do not return any data, respectively, to call methods (subroutines) and return values. But in Python, you don't have to worry about these semantic issues, because by using the return statement, you can achieve these two goals in almost the same way (see Listing 4).Listing 4. Returns a value in a function
>>> def stats (data):
... sum = 0.0 ...
parameters.
[Root @ xxx-MIGPC-DB uploads] # dstat -- help
Usage: dstat [-afv] [options ..] [delay [count]
Versatile tool for generating system resource statistics
Dstat options:
-C, -- cpu enable cpu stats
-C 0, 3, total include cpu0, cpu3 and total
-D, -- disk enable disk stats
-D total, hda include hda and total
-G, -- page enable page stats
-I, -- int enable
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