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scripts: amend scheduler option in fio.py

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The 4.16 Linux Kernel does not appear to have a noop scheduler for block
devices. Instead, it supplies a none option to turn off the scheduler
entirely.

Change-Id: I2dfb75b845cfff2ce2cabcfd86183b01432ad898
Signed-off-by: Seth Howell <seth.howell@intel.com>
Reviewed-on: https://review.gerrithub.io/410954
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
This commit is contained in:
Seth Howell 2018-05-11 14:51:54 -07:00 committed by Daniel Verkamp
parent d0b7400c08
commit b484547f57
1 changed files with 12 additions and 3 deletions
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15
scripts/fio.py
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@ -98,11 +98,19 @@ def create_fio_config(size, q_depth, devices, test, run_time, verify):
def set_device_parameter(devices, filename_template, value): def set_device_parameter(devices, filename_template, value):
valid_value = True
for dev in devices: for dev in devices:
filename = filename_template % dev filename = filename_template % dev
f = open(filename, 'r+b') f = open(filename, 'r+b')
f.write(value.encode()) try:
f.close() f.write(value.encode())
f.close()
except OSError:
valid_value = False
continue
return valid_value
def configure_devices(devices): def configure_devices(devices):
@ -120,7 +128,8 @@ def configure_devices(devices):
print("Could not set block device queue depths.") print("Could not set block device queue depths.")
else: else:
print("Requested queue_depth {} but only {} is supported.".format(str(requested_qd), str(qd))) print("Requested queue_depth {} but only {} is supported.".format(str(requested_qd), str(qd)))
set_device_parameter(devices, "/sys/block/%s/queue/scheduler", "noop") if not set_device_parameter(devices, "/sys/block/%s/queue/scheduler", "noop"):
set_device_parameter(devices, "/sys/block/%s/queue/scheduler", "none")
if __name__ == "__main__": if __name__ == "__main__":