I cannot figure out how to upload files as attachments, is this feature broken?

Here is a script I have tried to optimize various Linux settings based on the LSI support pages:

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#!/bin/bash

# turn off seek re-ordering
echo "0" > /sys/block/sda/queue/rotational

# set I/O scheduler to noop
echo "noop" > /sys/block/sda/queue/scheduler

# set block layer queue depth
echo "975" > /sys/block/sda/queue/nr_requests

# set device layer queue depth
echo "975" > /sys/block/sda/device/queue_depth

# disable kernel background thread
echo "N" > /sys/module/drm_kms_helper/parameters/poll

# set MegaRAID IRQ affinity masks
irqs=`cat /proc/interrupts |grep mega|awk -F ":" '{ print $1}'`
mask[0]=1
mask[1]=2
mask[2]=4
mask[3]=8
mask[4]=10
mask[5]=20
mask[6]=40
mask[7]=80
i=0
for irq in $irqs; do
# echo "irq=$irq, i=$i, mask=${mask[$i]}";
echo ${mask[$i]} > /proc/irq/$irq/smp_affinity
let i++;
done

# set irq affinity
echo "0" > /sys/block/sda/queue/rq_affinity