Mysql lockups

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  • Petre Agenbag

    Mysql lockups

    Hi List

    Been trying to help out with this problem on a SunOS5.8 box running
    3.23.56

    It experiences periodic lockups of mysql. It does not seem that this
    server has a my.cnf file for mysql, and I'm not sure if that matters
    (what are the defaults mysql use when it cannot find the .cnf file?)

    Anyway, I have asked for any help in making a my.cnf file in other
    threads, but it seems everyone is on 4.x already, or they cannot help in
    that regard.

    Below is some feedback from the server 1st : top


    last pid: 11217; load averages: 0.00, 0.00,
    0.00 07:54:43
    17 processes: 16 sleeping, 1 on cpu
    CPU states: 85.2% idle, 10.2% user, 4.4% kernel, 0.2% iowait, 0.0%
    swap
    Memory: 2048M real, 667M free, 2065M swap in use, 3403M swap free

    PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND
    22435 xxxxxxxx 21 58 0 89M 32M sleep 2:43 0.58% caspeng
    11210 xxxxxxxx 1 58 0 2896K 1664K cpu 0:00 0.54% top
    9961 xxxxxxxx 31 58 0 15M 6600K sleep 0:13 0.27% mysqld
    11139 xxxxxxxx 1 58 0 5608K 1752K sleep 0:00 0.01% sshd
    18642 xxxxxxxx 5 58 0 2312K 936K sleep 0:20 0.00% caspd
    491 xxxxxxxx 5 58 0 3768K 2016K sleep 0:10 0.00% httpd
    9948 xxxxxxxx 1 40 0 1048K 760K sleep 0:00 0.00%
    safe_mysqld
    11141 xxxxxxxx 1 48 0 2384K 1904K sleep 0:00 0.00% tcsh
    9228 xxxxxxxx 3 58 0 4000K 2576K sleep 0:00 0.00% httpd
    10999 xxxxxxxx 4 58 0 3920K 2472K sleep 0:00 0.00% httpd
    10510 xxxxxxxx 3 58 0 3888K 2448K sleep 0:00 0.00% httpd
    11001 xxxxxxxx 4 58 0 3888K 2440K sleep 0:00 0.00% httpd
    11081 xxxxxxxx 4 58 0 3880K 2432K sleep 0:00 0.00% httpd
    11075 xxxxxxxx 4 58 0 3872K 2424K sleep 0:00 0.00% httpd
    11076 xxxxxxxx 4 58 0 3872K 2408K sleep 0:00 0.00% httpd

    and 2nd is

    xxxxxxxx.xxxxxx xx.xxxxxxxx% mysqladmin -u root -p -v pro
    Enter password:
    +-----+--------+-----------+--------------------+---------+------+-------+-----------------------+
    | Id | User | Host | db | Command | Time | State
    | Info |
    +-----+--------+-----------+--------------------+---------+------+-------+-----------------------+
    | 187 | root | localhost | Users | Sleep | 278 |
    | |
    | 190 | root | localhost | Boards | Sleep | 278 |
    | |
    | 191 | root | localhost | Users | Sleep | 278 |
    | |
    | 192 | root | localhost | Boards | Sleep | 278 |
    | |
    | 193 | root | localhost | Boards | Sleep | 278 |
    | |
    | 194 | root | localhost | Boards | Sleep | 278 |
    | |
    | 226 | root | localhost | Boards | Sleep | 278 |
    | |
    | 227 | root | localhost | Users | Sleep | 123 |
    | |
    | 228 | root | localhost | Boards | Sleep | 123 |
    | |
    | 229 | root | localhost | Boards | Sleep | 123 |
    | |
    | 230 | root | localhost | Users | Sleep | 11 |
    | |
    | 231 | root | localhost | Boards | Sleep | 123 |
    | |
    | 232 | root | localhost | Boards | Sleep | 123 |
    | |
    | 233 | root | localhost | Users | Sleep | 271 |
    | |
    | 237 | user1 | localhost | Philosophies | Sleep | 113 |
    | |
    | 238 | user1 | localhost | PhilosophiesCus tom | Sleep | 133 |
    | |
    | 239 | user1 | localhost | Countries | Sleep | 133 |
    | |
    | 240 | root | localhost | Debatabase | Sleep | 123 |
    | |
    | 241 | root | localhost | Debatabase | Sleep | 123 |
    | |
    | 242 | root | localhost | Debatabase | Sleep | 123 |
    | |
    | 243 | root | localhost | Debatabase | Sleep | 123 |
    | |
    | 244 | root | localhost | Debatabase | Sleep | 14 |
    | |
    | 245 | root | localhost | Debatabase | Sleep | 14 |
    | |
    | 246 | root | localhost | Debatabase | Sleep | 14 |
    | |
    | 248 | root | localhost | | Query | 0 |
    | show full processlist |
    +-----+--------+-----------+--------------------+---------+------+-------+-----------------------+
    xxxxxxxx.xxxxxx xx.xxxxxxxx%

    and this is the error reported by the browser on such lockups.

    ADODB.Recordset .1 error '80004005'

    SQLState: S1000
    Native Error Code: 2013
    [TCX][MyODBC]Lost connection to MySQL server during query

    /main/home.asp, line 48


    PS, the output of both top and the entire process list are as the system
    is now, after a restart of mysql, ie, unfortunately it does probably not
    reflect anything that is prevalent during a lockup.

    Any ideas.




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