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6.4. Configuring the I/O Scheduler
The I/O scheduler is configured one way for Red Hat Enterprise Linux 5 and 6 and a different way for Red Hat Enterprise Linux 7.
6.4.1. Configuring the I/O Scheduler for Red Hat Enterprise Linux 5 and 6
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The I/O scheduler can be selected at boot time using the
elevator kernel parameter.
In the following example
grub.conf stanza, the system is configured to use the noop scheduler. The example shown is for VMware ESX.
title Red Hat Enterprise Linux Server (2.6.18-8.el5) root (hd0,0) kernel /vmlinuz-2.6.18-8.el5 ro root=/dev/vg0/lv0 elevator=noop initrd /initrd-2.6.18-8.el5.img
title Red Hat Enterprise Linux Server (2.6.18-8.el5)
root (hd0,0)
kernel /vmlinuz-2.6.18-8.el5 ro root=/dev/vg0/lv0 elevator=noop
initrd /initrd-2.6.18-8.el5.img
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