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Message #05817
Review request : MDEV-573 (mysqlreport update)
Hi,
I have been doing modifications to the MariaDB mysqlreport version
(which is shipped on the Debian/Ubuntu packages and can be found on the
debian/additions/ directory), especially to add stats/informations about
MariaDB specific functions but also to fix some bugs and limitations of
the tool.
As of today, the script works without throwing a warning and seems to
output correct informations on MariaDB 5.5 (either with or without
threadpool and binary log activated), MariaDB 5.5 + TokuDB, MySQL 5.1,
MySQL 5.5 and it solves some small bugs and issues that could lead
warning messages, invalid values returned or truncated values.
The main additions are the AriaDB pagecache stats, binlog cache stats,
subquery cache stats, TokuDB stats and Threadpool stats.
There are also some "cosmetic" changes/fixes : the addition of values
such as the % of disk tables used or the InnoDB read "From file"
modified to "From disk" as of the documentation of the status variables
states ; values such as the threads cache size or the table cache size
that were limited to 3 chars are now limited to 5 chars ; the per
seconds stats was truncated to 5 chars max on Questions and Query Cache
sections (for example 153.6k/s was truncated to 153.6/s).
The JIRA task : https://mariadb.atlassian.net/browse/MDEV-573
The GIT repository where i put the latest revisions (i only have been
using it lately but i commented all the changes and bugfixes along the
time on the JIRA task and could provide older revisions/diff if
required) :
https://github.com/jb-boin/mariadb/blob/5.5.30/debian/additions/mysqlreport
I would like to be sure that the values/stats i added are really useful
to monitor (and the calculations of these correct) and that the way
informations are shown, named and ordered is clear enough ; for example,
the way the test that determines if its a MariaDB or a MySQL server
might not be the best possible (it checks if the Aria engine is available).
There is still an upstream bug on the "Questions" and the "SELECT and
Sort" section, the %Total values are not correctly calculated and lead
to values > 100%, i havent got time to give it a look yet and i included
in the example output below values hitting that bug.
Here is an example of the output of the latest revision on a server
having about all the possible functions enabled (values are mixed from
different servers) :
MariaDB 5.5.30-tokudb-7.0.1 uptime 70 9:4:47 Thu Jul 4 01:48:24 2013
__ Key _________________________________________________________________
Buffer used 651.41M of 1.00G %Used: 63.61
Current 675.43M %Usage: 65.96
Write hit 79.79%
Read hit 99.99%
__ Questions ___________________________________________________________
Total 2.57M 0.4/s
-Unknown 39.92M 6.6/s %Total: 1550.4
DMS 39.78M 6.5/s 1545.3
Com_ 2.71M 0.4/s 105.09
COM_QUIT 444 0.0/s 0.02
Slow 4 s 285 0.0/s 0.01 %DMS: 0.00 Log: OFF
DMS 39.78M 6.5/s 1545.3
UPDATE 39.76M 6.5/s 1544.5 99.95
SELECT 21.11k 0.0/s 0.82 0.05
REPLACE 0 0/s 0.00 0.00
DELETE 0 0/s 0.00 0.00
INSERT 0 0/s 0.00 0.00
Com_ 2.71M 0.4/s 105.09
show_proces 2.51M 0.4/s 97.33
admin_comma 152.51k 0.0/s 5.92
show_status 9.23k 0.0/s 0.36
__ Rows ________________________________________________________________
Rows 186.00G 240.3k/s
Using idx 168.06G 217.1k/s %Index: 90.35
Rows/question 158.90
__ SELECT and Sort _____________________________________________________
Scan 42.33k 0.0/s %SELECT: 200.53
Range 0 0/s 0.00
Full join 19.27k 0.0/s 91.29
Range check 0 0/s 0.00
Full rng join 0 0/s 0.00
Sort scan 0 0/s
Sort range 0 0/s
Sort mrg pass 0 0/s
__ Table Locks _________________________________________________________
Waited 8.86M 11.4/s %Total: 0.46
Immediate 1.93G 2.5k/s
__ Tables ______________________________________________________________
Open 6843 of 8192 %Cache: 83.53
Opened 14.14k 0.0/s
__ Connections _________________________________________________________
Max used 5403 of 22000 %Max: 24.56
Total 176.48M 228.0/s
__ Created Temp ________________________________________________________
Disk table 7.76k 0.0/s %Disk: 14.55
Table 53.38k 0.0/s Size: 64.0M
File 12 0.0/s
__ Threads _____________________________________________________________
Running 274 of 2788
Created 181.68k 0.2/s
Slow 0 0/s
Threadpool 892 of 1200 %Used: 74.33
Running 458 of 1200 %Running: 38.17
Idle 434 of 1200 %Idle: 36.17
__ Aborted _____________________________________________________________
Clients 5.03k 0.0/s
Connects 3.65k 0.0/s
__ Bytes _______________________________________________________________
Sent 1.51T 1.9M/s
Received 445.91G 576.0k/s
__ InnoDB Buffer Pool __________________________________________________
Usage 25.97G of 26.00G %Usage: 99.89
Read hit 100.00%
Pages
Free 1.83k %Total: 0.11
Data 1.67M 98.23 %Drty: 0.07
Misc 28381 1.67
Latched 0 0.00
Reads 527.54G 681.5k/s
From disk 100.00k 0.1/s %Disk: 0.00
Ahead Rnd 0 0/s
Writes 5.21G 6.7k/s
Flushes 17.35M 22.4/s
Wait Free 9 0.0/s %Wait: 0.00
__ InnoDB Lock _________________________________________________________
Waits 36660726 47.4/s
Current 0
Time acquiring
Total 627441780 ms
Average 171 ms
Max 1537520 ms
__ InnoDB Data, Pages, Rows ____________________________________________
Data
Reads 512.26k 0.7/s
Writes 181.92M 235.0/s
fsync 2.07M 2.7/s
Pending
Reads 0
Writes 0
fsync 0
Pages
Created 3.72M 4.8/s
Read 512.18k 0.7/s
Written 17.35M 22.4/s
Rows
Deleted 175.85M 227.2/s
Inserted 200.46M 259.0/s
Read 174.52G 225.4k/s
Updated 224.40M 289.9/s
__ Aria Pagecache ______________________________________________________
Buffer used 3.43M of 512.00M %Used: 0.67
Current 20.26M %Usage: 3.96
Write hit 47.09%
Read hit 99.96%
__ Subquery Cache ______________________________________________________
Hit ratio 99.91%
Hits 38.63G 49.9k/s
Miss 35.97M 46.5/s
__ Binary Log Cache _____________________________________________________
Disk use
Transactional 0.43%
Non transactional 0.50%
__ TokuDB ______________________________________________________________
Cachetable 4.00G of 4.00G %Usage: 99.99
Miss 1.83M 0.3/s
Evictions 1.95M 0.3/s
Thanks in advance,
Jean Weisbuch
