ubc_maxpercent settings.

[David_854]

Hello Managers,
Is there a way to change the ubc_maxpercent without a reboot.
In the man pages mentions that a reboot is required.

David

[Michael Schulte zur Sur]

Hi,

it looks like you run 4.X.
In 5.X you can change it dynamically.

greetings,

Michael

[Ivan Ferreira · Accepted solution]

Use sysconfig -Q to verify:

sysconfig -Q vm |grep ubc_max
ubc_maxpercent - type=INT op=CRQ min_val=0 max_val=100


If you get the R in op, can be changed at run time.

Then you can use:

sysconfig -r vm ubc_maxpercent=

[David_854]

Right, It states that it can be chanced online using the sysconfig -r command but when I displayed the value of the ubc_maxpercent still shows what it was before I changed it.

# sysconfigdb -l vm | grep ubc
ubc_maxpercent = 30
vm_ubcseqstartpercent = 30

# sysconfig -r vm ubc_maxpercent=20
ubc_maxpercent: reconfigured

# sysconfigdb -l vm | grep ubc
ubc_maxpercent = 30
vm_ubcseqstartpercent = 30

David

[David_854]

Got it, using the wrong command.
Thanks everyone.

# sysconfigdb -l vm | grep ubc
ubc_maxpercent = 30
vm_ubcseqstartpercent = 30

# sysconfig -q vm | grep ubc_maxpercent
ubc_maxpercent = 20

#