….2 — New Features: Percona Server for MySQL has implemented priority connection scheduling for the Thread Pool. (Alexey Kopytov) Percona Server for… III). Fixed the upstream bug #62578 which caused MySQL client to abort the connections on terminal resize. Bug fixed #925343 (Sergei Glushchenko). Percona…
Post: Percona Server for MySQL 5.5.30-30.2 now available
April 10, 2013 By 10 Comments
… Launchpad. New Features: Percona Server for MySQL has implemented priority connection scheduling for the Thread Pool. (Alexey Kopytov) Percona Server for… III). Fixed the upstream bug #62578 which caused MySQL client to abort the connections on terminal resize. Bug fixed #925343 (Sergei Glushchenko). Percona…
Post: How Percona does a MySQL Performance Audit
November 24, 2008 By 17 Comments
…like this: [percona@db1 ~]$ mysqladmin ext -ri10 +———————————–+———————-+ | Variable_name | Value | +———————————–+———————-+ | Aborted_clients | 205174 | | Aborted_connects | 29 | | Binlog_cache_disk_use | 0 | | Binlog_cache_use…
Post: How to track down the source of Aborted_connects
August 23, 2008 By 19 Comments
… biggest measurable sign was [percona@server ~]$ mysqladmin ext | grep Abort | Aborted_clients | 14835 | | Aborted_connects | 15598 | These two status variables are actually unrelated (see the… 1500 -w tcp.out port 3306 After I saw an aborted connection, I cancelled tcpdump and looked at the resulting file. Inspecting…
Post: Ultimate MySQL variable and status reference list
January 8, 2011 By 4 Comments
…three sites in one! abort_slave_event_countblogpercona.commanual Aborted_clientsblogpercona.commanual Aborted_connectsblogpercona.commanual allow_…commanual Ssl_cipher_listblogpercona.commanual Ssl_client_connectsblogpercona.commanual Ssl_connect_renegotiatesblogpercona.commanual Ssl_ctx_verify…
Post: Apache PHP MySQL and Runaway Scripts
May 20, 2008 By 20 Comments
…” button in the browser to abort connection and check if script continues to run. ignore_user_abort was set to FALSE for running… not output anything to the browser neither automatic termination not connection_aborted() check seems to work. More over you need both ob… reliably as if no low level network send is attempted connection abort from client will not be discovered. This is unfortunately very serious…
Post: MySQL net_write_timeout vs wait_timeout and protocol notes
July 8, 2007 By 1 Comment
… you might need to increase net_write_timeout to avoid connection being aborted and now I think I should have better explained… be the good idea. This for example typical cause of aborted connections while using Sphinx with large data sets and large buffers…’re fetching data because there is buffering happening inside MySQL client library so you never know when real network read will…
Comment: How to track down the source of Aborted_connects
August 24, 2008 By 19 Comments
… split Aborted_connects to network related and Authentication_Failures as these are very different events. Aborted_clients may also benefit splitting somehow because unexpected aborts (network related) are not the same as aborts when client exists without closing connection or…
Comment: Why do you need many apache children ?
February 17, 2008 By 15 Comments
…. So mysql connection opened in slow HTTP connection reaches to wait_timeout and MySQL aborts those mysql connections. There were about 200 Aborted_Clients per hour in mysql error log. After changing Timeout directive in httpd.conf, all seems to be ok. Mysql connections…
Comment: MySQL Server Memory Usage
September 1, 2006 By 21 Comments
… tool that states that we often hit the “max_connections” threshold (650) connections. Cpu is fine (about 100% of 400% available, MPM… with these figures. Queries/sec: 265 Traffic: 1Mb/sec Connections:259 ‘Aborted_clients‘, ’267108′ ‘Aborted_connects‘, ’25997′ ‘Binlog_cache_disk_use’, ’145′ ‘Binlog_cache_use…
