system IO load is high while copying huge amounts of data to USB disk.

Solution Verified - Updated -

Issue

  • system load is high while copying huge amounts of data to USB disk.

  • We have found out that our system became IO bound due to copying 43GB of data from a SAN block device with "dd" to a mounted USB disk.

My question is: how can we safely copy this amount of data without other processes being stalled? Are there any kernel parameters to influence the process priority? Is there any solution?.

Environment

  • Red Hat Enterprise Linux 5

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content