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084f2db8c6 Red Hat Enterprise Linux 4 used this I/O scheduler as the default even though it used a kernel based on a 2.6.9.. It can be considered a natural extension of granting I/O time slices to a process. ^ D. Please help. Jens Axboe made improvements to his first implementation, calling the new version the Completely Fair Queueing scheduler, and produced a patch to apply it to the 2.5.60 development series kernel. Reply Link Ron July 28, 2014, 1:55 pmKedar: you would need to specify how exactly the external disk is attached Reply Link daft117 July 28, 2014, 8:37 pmwe can automate this step for every reboot by:cat /etc/rc.local grep -iv ^exit > /tmp/temp echo -e echo deadline > /sys/block/vda/queue/schedulernexit 0 >> /tmp/temp cat /tmp/temp > /etc/rc.local; rm /tmp/tempas u can see i used deadline for vda in this example.
Unsourced material may be challenged and removed. The second release of the CFQ scheduler dubbed CFQv2 is included in the 2.6.10, improvements include better responsiveness and the elimination of some starvation issues which were present in the earlier version. Description. Short detail about CFQ (archived from here) Coming in 2.6.10 . "Choosing an I/O Scheduler for Red Hat Enterprise Linux 4 and the 2.6 Kernel". Its unclear to me which setting wins if you are running lvm on top of software raid (which isnt incredibly uncommon), and have different schedulers set for the physical disks, raid devices, and lvm devices&PS: it looks like you can find out which LVM volume maps to dm-6, for example, by dong an ls -l on /dev/block/252:*. Kernel 2.6.10 (24 December 2004). Follow him on Twitter. Asynchronous requests for all processes are batched together in fewer queues, one per priority. In February 2003 Andrea Arcangeli put forward his idea for a Stochastic Fair Queueing I/O scheduler to Jens Axboe who then implemented it.