# MySQL 5.6 slave Slave\_IO\_State is in system lock state

**URL:** <https://forums.percona.com/t/mysql-5-6-slave-slave-io-state-is-in-system-lock-state/3041>\
**Category:** Other MySQL® Questions\
**Created:** [October 28, 2013, 1:21pm UTC](https://forums.percona.com/t/mysql-5-6-slave-slave-io-state-is-in-system-lock-state/3041 "2013-10-28T13:21:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![vpestovnikov](https://avatars.discourse-cdn.com/v4/letter/v/a6a055/32.png) [@vpestovnikov](https://forums.percona.com/u/vpestovnikov)\
**Post date:** [October 28, 2013, 1:21pm UTC](https://forums.percona.com/t/mysql-5-6-slave-slave-io-state-is-in-system-lock-state/3041/1 "2013-10-28T13:21:08Z")

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MySQL 5.6 slave Slave\_IO\_State is in system lock state

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**Author:** ![vladfr](https://avatars.discourse-cdn.com/v4/letter/v/35a633/32.png) [@vladfr](https://forums.percona.com/u/vladfr)\
**Post date:** [November 9, 2013, 10:36am UTC](https://forums.percona.com/t/mysql-5-6-slave-slave-io-state-is-in-system-lock-state/3041/2 "2013-11-09T10:36:07Z")

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I’m seeing the same problem and I can replicate, I also only found the [COLOR=#252C2F] case but I don’t think I’m affected.  
We run 5.6.12 in AWS’s RDS, it’s a big Magento (php) installation.

What’s interesting for me is that I see System Lock on the master as well. Can you double-check in your case and confirm? I suspect you’ll see it on the master as well.  
I use monyog’s Real-Time feature and I’ve got 54% in System Lock…

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**Author:** ![vladfr](https://avatars.discourse-cdn.com/v4/letter/v/35a633/32.png) [@vladfr](https://forums.percona.com/u/vladfr)\
**Post date:** [November 9, 2013, 10:37am UTC](https://forums.percona.com/t/mysql-5-6-slave-slave-io-state-is-in-system-lock-state/3041/3 "2013-11-09T10:37:03Z")

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Oh, needless to say, any help will be very much appreciated. I will keep you posted of my progress.