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server linux va in blocco
Posted by: Damiano Sly
Date: June 05, 2009 01:47PM

Salve a tutti,

ultimamente il mio server dedicato va spesso in crash...mysql viene utilizzato pesantemente. La macchina ha 4GB e viene quasi sempre usata tutta quanta.

Vorrei capire se posso ottimizzare mysql, questo il report che mi da mysqlreport, mi potete dare qualche dritta?



MySQL 5.0.45 uptime 2 11:4:35 Fri Jun 5 23:11:06 2009

__ Key _________________________________________________________________
Buffer used 7.08M of 8.00M %Used: 88.48
Current 7.98M %Usage: 99.76
Write hit 98.69%
Read hit 99.99%

__ Questions ___________________________________________________________
Total 1.91M 9.0/s
DMS 1.68M 7.9/s %Total: 87.97
Com_ 156.73k 0.7/s 8.19
COM_QUIT 73.04k 0.3/s 3.82
+Unknown 478 0.0/s 0.02
Slow 10 s 0 0/s 0.00 %DMS: 0.00 Log: OFF
DMS 1.68M 7.9/s 87.97
SELECT 1.67M 7.9/s 87.51 99.48
UPDATE 5.78k 0.0/s 0.30 0.34
INSERT 1.89k 0.0/s 0.10 0.11
DELETE 1.04k 0.0/s 0.05 0.06
REPLACE 21 0.0/s 0.00 0.00
Com_ 156.73k 0.7/s 8.19
change_db 94.50k 0.4/s 4.94
set_option 57.40k 0.3/s 3.00
show_fields 1.04k 0.0/s 0.05

__ SELECT and Sort _____________________________________________________
Scan 105.11k 0.5/s %SELECT: 6.28
Range 155.00k 0.7/s 9.26
Full join 1 0.0/s 0.00
Range check 0 0/s 0.00
Full rng join 0 0/s 0.00
Sort scan 230.11k 1.1/s
Sort range 114.65k 0.5/s
Sort mrg pass 508 0.0/s

__ Table Locks _________________________________________________________
Waited 116 0.0/s %Total: 0.01
Immediate 2.10M 9.9/s

__ Tables ______________________________________________________________
Open 64 of 64 %Cache: 100.00
Opened 7.54k 0.0/s

__ Connections _________________________________________________________
Max used 22 of 100 %Max: 22.00
Total 73.05k 0.3/s

__ Created Temp ________________________________________________________
Disk table 121.69k 0.6/s
Table 230.82k 1.1/s Size: 32.0M
File 1.04k 0.0/s

__ Threads _____________________________________________________________
Running 2 of 2
Cached 0 of 0 %Hit: 0
Created 73.05k 0.3/s
Slow 38 0.0/s

__ Aborted _____________________________________________________________
Clients 22 0.0/s
Connects 10 0.0/s

__ Bytes _______________________________________________________________
Sent 791.71M 3.7k/s
Received 806.45M 3.8k/s

__ InnoDB Buffer Pool __________________________________________________
Usage 4.28M of 8.00M %Used: 53.52
Read hit 99.70%
Pages
Free 238 %Total: 46.48
Data 273 53.32 %Drty: 0.00
Misc 1 0.20
Latched 0 0.00
Reads 81.48k 0.4/s
From file 243 0.0/s 0.30
Ahead Rnd 3 0.0/s
Ahead Sql 1 0.0/s
Writes 1.39k 0.0/s
Flushes 321 0.0/s
Wait Free 0 0/s

__ InnoDB Lock _________________________________________________________
Waits 0 0/s
Current 0
Time acquiring
Total 0 ms
Average 0 ms
Max 0 ms

__ InnoDB Data, Pages, Rows ____________________________________________
Data
Reads 378 0.0/s
Writes 604 0.0/s
fsync 439 0.0/s
Pending
Reads 0
Writes 0
fsync 0

Pages
Created 1 0.0/s
Read 272 0.0/s
Written 321 0.0/s

Rows
Deleted 90 0.0/s
Inserted 21 0.0/s
Read 20.58k 0.1/s
Updated 181 0.0/s

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