Mike Morton said: > Dan: > > Thanks for the suggest. I will check it out. The strange thing is that > as I mentioned, the PHP code that I am using is straightforward, and I > have never had any problems with the database not disconnecting properly > with PHP, but that being said, the possibility that it is a db connector > problem I guess would be OS specific rather than PHP or MYSQL specific > necessarily? > > We will try upgrading PHP to 4.3.4 to see if that helps, and it may be > also that a MYSQL 4 upgrade is also on the way. > > Talking to the host provider, they did mention that the 3 disk array is > served only by 1 controller, and they will be adding more, perhaps the > bottleneck is in the disk writes, but I cannot see that being a big > issue on the relativly low traffic (only around 2GB/month web > traffic...) > > Any other ideas? > > On 1/6/04 2:29 PM, "Dan Greene" <[EMAIL PROTECTED]> wrote: > >> Is it possible that some portions of your code do not disconnect thier >> db connections when they are done? I've seen issues like this with >> platforms that do not use db pool managers to ensure release of db >> connections when they are idle for a while. Particularly if there are >> error scenerios where the normal connection closure may be skipped... >> >> My $0.02... >> >> Dan Greene >> >> >> >>> -----Original Message----- >>> From: Mike Morton [mailto:[EMAIL PROTECTED] >>> Sent: Tuesday, January 06, 2004 2:15 PM >>> To: [EMAIL PROTECTED] >>> Subject: Sleeping Processes >>> >>> >>> I have a mysql database that is running in conjunction with a >>> PHP website, >>> and I am experiencing some significant slowdowns in times of moderate >>> traffic. >>> >>> Now, by moderate, I mean moderate for them, but fairly light >>> traffic in >>> terms of actual visitors. >>> >>> The library the is causing the slowdowns simple updates a >>> 'last_active' >>> variable in a sessions table in mysql which normally has no affect on >>> loading speed at all, but what I am noticing during this high traffic >>> period, is anywhere from 50 - 60 processes that are 'sleeping' in the >>> database when I do a show processlist. E.g. >>> +--------+--------+-----------+--------+---------+------+----- >>> ---------+---- >>> -------------------------------------------------------------- >>> --------+ >>> | Id | User | Host | db | Command | Time | >>> State | >>> Info >>> | >>> +--------+--------+-----------+--------+---------+------+----- >>> ---------+---- >>> -------------------------------------------------------------- >>> --------+ >>> | 680849 | tienda | localhost | tienda | Sleep | 22 | >>> | >>> NULL >>> | >>> | 680859 | tienda | localhost | tienda | Sleep | 154 | >>> | >>> NULL >>> | >>> | 680878 | tienda | localhost | tienda | Sleep | 101 | >>> | >>> NULL >>> | >>> | 680942 | tienda | localhost | tienda | Sleep | 96 | >>> | >>> NULL >>> | >>> >>> >>> But upwards of as I said, 50 - 60 of them at any given time. >>> >>> I do not have a slow day comparison to offer, but I have done >>> many a sight >>> and never seen sleeping processes like this. >>> >>> The question is, could these be affecting the slowness of the >>> database, as I >>> have determined that it is the database that is slowing down the >>> site. >>> >>> The largest table holds only 42K rows, and the most accessed table is >>> indexed with the most accessed fields and holds only 16K >>> rows, so there >>> should be no problem there. >>> >>> The max connections is set to 300, and the version is 3.23.47 >>> >>> The PHP version is 4.2.3 and I am NOT using mysql_pconnect but rather >>> mysql_connect: >>> [EMAIL PROTECTED]("localhost","<blocked>","<blocked>"); >>> @mysql_select_db("tienda"); >>> >>> Because it is a shared box, I do not have access to make a >>> lot of changes, >>> but the company is very co-operative and I am sure would be >>> helpful for >>> making small setting changes, as long as we are not talking >>> major version >>> updates, as they do have other clients using the server. >>> >>> I cannot think of anything else that I can pass on, if anyone has any >>> suggestions or ideas I would appreciate it as I am plumb out >>> of them! :) >>> >>> TIA >>> >>> -- >>> Cheers >>> >>> Mike Morton >>> >>> **************************************************** >>> * >>> * Tel: 905-465-1263 >>> * Email: [EMAIL PROTECTED] >>> * >>> **************************************************** >>> >>> "Indeed, it would not be an exaggeration to describe the >>> history of the >>> computer industry for the past decade as a massive effort to >>> keep up with >>> Apple." >>> - Byte Magazine >>> >>> Given infinite time, 100 monkeys could type out the complete works of >>> Shakespeare. Win 98 source code? Eight monkeys, five minutes. >>> -- NullGrey >>> >>> >>> -- >>> MySQL General Mailing List >>> For list archives: http://lists.mysql.com/mysql >>> To unsubscribe: >>> http://lists.mysql.com/[EMAIL PROTECTED] >>> >>> > > -- > Cheers > > Mike Morton > > **************************************************** > * > * Tel: 905-465-1263 > * Email: [EMAIL PROTECTED] > * > **************************************************** > > "Indeed, it would not be an exaggeration to describe the history of the > computer industry for the past decade as a massive effort to keep up > with Apple." > - Byte Magazine > > Given infinite time, 100 monkeys could type out the complete works of > Shakespeare. Win 98 source code? Eight monkeys, five minutes. > -- NullGrey > > I have one php application with php and mysql where php is imbedded in the apache children and when connection pooling is on, there is a connection for each apache child process.
William R. Mussatto, Senior Systems Engineer Ph. 909-920-9154 ext. 27 FAX. 909-608-7061 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
