nikon/tuned
1
0
Fork 0
Code Activity Actions

realtime: added support for netdev_queue_count

Browse source 
This allows the user to adjust the queue count for each
network device.

Also add check_net_queue_count built-in function.

The functions check if the user has specified any
queue count value or not. If no value is passed the function
returns the number of housekeeping CPUs as the queue count.

Resolves: rhbz#1846767

Signed-off-by: Nitesh Narayan Lal <nitesh@redhat.com>
This commit is contained in:
Nitesh Narayan Lal 2021-01-22 11:01:05 -05:00
parent 0ab1f8cc3f
commit c002d93b59
3 changed files with 33 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
profiles/realtime/realtime-variables.conf
View file

@ -9,3 +9,11 @@
# kernel supports it.
#
# isolate_managed_irq=Y
#
#
# Set the desired combined queue count value using the parameter provided
# below. Ideally this should be set to the number of housekeeping CPUs i.e.,
# in the example given below it is assumed that the system has 4 housekeeping
# (non-isolated) CPUs.
#
# netdev_queue_count=4

3
profiles/realtime/tuned.conf
View file

@ -35,6 +35,9 @@ assert2=${f:assertion:isolated_cores contains online CPU(s):${isolated_cores_exp
isolate_managed_irq = ${isolate_managed_irq}
managed_irq=${f:regex_search_ternary:${isolate_managed_irq}:\b[y,Y,1,t,T]\b:managed_irq,domain,:}
[net]
channels=combined ${f:check_net_queue_count:${netdev_queue_count}}
[sysctl]
kernel.hung_task_timeout_secs = 600
kernel.nmi_watchdog = 0

22
tuned/profiles/functions/function_check_net_queue_count.py Normal file
View file

@ -0,0 +1,22 @@
import tuned.logs
from . import base
log = tuned.logs.get()
class check_net_queue_count(base.Function):
"""
Checks whether the user has specified a queue count for net devices. If
not, return the number of housekeeping CPUs.
"""
def __init__(self):
# 1 argument
super(check_net_queue_count, self).__init__("check_net_queue_count", 1, 1)
def execute(self, args):
if not super(check_net_queue_count, self).execute(args):
return None
if args[0].isdigit():
return args[0]
(ret, out) = self._cmd.execute(["nproc"])
log.warn("net-dev queue count is not correctly specified, setting it to HK CPUs %s" % (out))
return out