# Throttle Slave IO BW

**URL:** <https://forums.percona.com/t/throttle-slave-io-bw/782>\
**Category:** Other MySQL® Questions\
**Created:** [May 29, 2008, 10:46am UTC](https://forums.percona.com/t/throttle-slave-io-bw/782 "2008-05-29T10:46:42Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Jjhuff](https://avatars.discourse-cdn.com/v4/letter/j/977dab/32.png) [@Jjhuff](https://forums.percona.com/u/Jjhuff)\
**Post date:** [May 29, 2008, 10:46am UTC](https://forums.percona.com/t/throttle-slave-io-bw/782/1 "2008-05-29T10:46:42Z")

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Is it possible to throttle how fast the slave IO thread reads data from the master? When I bring a slave back from 8hrs of running an ALTER, my master pegs it’s disk transferring binlogs to the slave.  
thanks!  
–Justin