# iostat shows large amount of activity

**URL:** <https://forums.percona.com/t/iostat-shows-large-amount-of-activity/1016>\
**Category:** Other MySQL® Questions\
**Created:** [November 30, 2008, 9:59pm UTC](https://forums.percona.com/t/iostat-shows-large-amount-of-activity/1016 "2008-11-30T21:59:37Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dcampano](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/dcampano/32/779_2.png) [@dcampano](https://forums.percona.com/u/dcampano)\
**Post date:** [November 30, 2008, 9:59pm UTC](https://forums.percona.com/t/iostat-shows-large-amount-of-activity/1016/1 "2008-11-30T21:59:37Z")

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Quick question. I have an LVM volume group set up with 2 logigal volumes. One of the volumes only contains the binary logs. When I watch the speed at which the logs grow with `ls -al` command, they are growing about 1MB every 3-4 seconds, yet iostat shows my write MB/s around 4-5. Anyone know why this could be?

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<div class="post-metadata">

**Author:** ![dcampano](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/dcampano/32/779_2.png) [@dcampano](https://forums.percona.com/u/dcampano)\
**Post date:** [December 4, 2008, 9:06pm UTC](https://forums.percona.com/t/iostat-shows-large-amount-of-activity/1016/2 "2008-12-04T21:06:37Z")

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Anyone have any idea what would cause the difference in these numbers? Is it normal?