Linux - System performance

so into our previous video we have

checked for the resource which can we

can see 40 what the performance they

have and also we can use a different

diagnostic tools as well as command to

use it so here in this video I'm going

to show how to use the stools and how we

can modify the processes entries and the

priorities into this particular video so

let us start with the terminal here so

we can check the processes of the system

by using the PS based - II and we can

check the number of processes that will

contain your process IDs in which

terminal you generally have logged in

from when you heart you know start you

have started with that particular

process and which process you are subtle

so for example I'm using Firefox I have

started

so if I've started the Firefox from root

log

so basically this is a foreground

process so until I'm you know closing my

firefox I wouldn't be able to get D

prompter so that's the reason I'm coming

into the other terminal and

I'm going to

come on

so

I have to find the password and let us

check the process right so you're just

showing you

that the Firefox process is start just

for second cycle right

so this is the PID automatically gets in

rigid and then leave process it will

give the detail of the process now once

I end the process by pressing the ctrl C

the Firefox is gone from here and you

can find again into processbook - II

there will be no white foxtrots this

year means it will create your process

and it will also manage your process

will check for what particular processes

generally you have same way this is like

you know if I'm starting a process I

need to move into this particular

command and I need to check it what the

status is

but what if I want to check the stages

continuously I can give top come on just

give top and hit enter so it will show

you the complete you know information

about your different that's particular

your processes and also it will add you

what is the resources it relies so you

can see it is showing you the percentage

of utilize resources let is your CPU the

memory what is the virtual memory we

have used what is the nice value and

what is the priority so let us check

what the nice values and priorities are

like whenever we have certain tasks or

you know certain

processes all these processes are having

some priority it's like based on the

highest priority or you know not which

is having the high priority will have

the first preference by the resources to

perform the same way here if you have

the lowest one you cannot but how you

are going to set this priority but if

you I'm talking about setting the

priority then superiority switch we can

set that is from minus 20 to plus 20

now when I'm going to set the process

this number is the highest number but it

will have the lowest reality the highest

priority will be given to this

particular number this is minus 20 so

how will check here you can see the

priority numbers we have 20 some have 9

some have 0 so these are the priorities

generally we have by defining the top

commands right so if I want to know

create a particular process and I want

to change the priority of it I can also

do it by using very nice value so if I

want to check for a nice value for a

particular process how we generally do

it

so generally I can give nice command so

there is no process as I've now started

so I'm just going to start my Firefox

process and took back in so if I want to

make it as a playground process I can

give no ampersand signed along with the

process so it will be started in the

bracket and I'll be getting the prompt

here right

in spite my Firefox it's on I'm getting

the product that is the background

process generally we can put it out now

if I'm going to check for the jobs so it

is showing me this is a job which is

running as of now

correct so now we can check for the job

which we have started that is this is a

job and it has the priority

you

and check for firefox like rectifier

foxes

you

we need to find that for the Firefox is

located true this

you

the different processes are continuously

they cannot they are changing their

priority that the reason it is

completely wiring

I'm showing you the status of all the

running processes sleeping processes

stopped processes and zombie processes

and I want to check what's in ounce

value I have for my process so we can

also check into

yes - II

you

or we can also move here into the

utility

and we can check sorry into the system

tools and we can check for the system

monitors so I can it will check show me

into the process window the process

which are going on but they know

priorities which we have set to it right

until it is a normal priority you can

check for the priority which we have set

so I just showing you the CPU and this

is a second generally we have just

started the priorities again normal

right so this is how generally we can

change the priority of a particular

devices now we also have the you know

process called as Firefox which is in

the world

actually showing you the processes

started by the trainer so we are we have

started the process and uh the fire for

this's root so it's not able to show us

the process here

or we can also use the Spears command by

adding some parameters into it like if I

want to add oh and ER so please show me

the Priya IDs and I can also check for

all the priorities ideas along with the

process IDs and a person's name I can

give at PS base - II - oh I want to

check for UID

I want to check for a PID that is a

process ID I want to check for ppit and

PRI there's my priorities IDs nice value

and your command

so I want to check everything so here

just showing me the command but I will

be using into thee

it has more you can see this is the pids

and Zardi processes generally you have

so I'm going to check for the process

which I have a nibble so I have enabled

the process called as the Firefox we can

also check for a particular process over

here

more we can also use grips and more

actually we have use thicker up yet but

I'm going to use it now grip fire force

so you can check this is the command I

have used completely

so these are having a multiple

parameters I have told my process to

check and this particular and headings I

require into it and I just want to check

the fire first because it gives me a lot

of lists so I do not want to check for

all the lists just I want to search for

Firefox into it and I want paint choice

so now if like you know if you filter so

you don't if you do not point to define

more also you can because there is only

two processes which is you know running

into this system so this is the Firefox

process which is having a process ID and

they you know your nice value which we

are going to see over here so very first

column is for UID and GID we don't

really have and this is PID and this is

a process ID so now it is cutting a

process ID 19 minutes it is not on the

priority now if I want to change the

priority of this particular process will

give the green eyes value and we can

define the value here like if I want to

make it as priority so I'll give - so

I'll define theta into the negative

values I'll define the magnin

-12 - the same for society we can define

as a process name we can define so I'm

just going to define the for society so

I'm going to define personality as

five six zero each sorry

five six zero eight

so what is the for society we need to

check for this Firefox

this three h40

okay so this is three eight four zero

this is your for society okay this is

the UID okay so really nice - none -

twelve two three eight four zero let us

check the process ID of this value again

by giving me same command we can check

the first Society is changed to minus

twelve means this is at higher priority

so let us check generally if I am

logging through the particular user now

for example if I get log in with the

user and you can see this top command

has taken this Firefox on the top

because it has thee

high-priority right so this is all

exactly the priority they like how we

can change the priority like nice and to

nice values as well like if suppose I

want to directly get access to the my

trainer itself because as I feel got

locked in through my the user that is my

super user route you are not able to get

the process which I'm going to start

into the graphical terminal as well so

if I want to use the graphical terminal

in spite of using the pick command which

we have used over there

I'll be using just the application

system tools are your custom monitor and

I'm going to start a task here I'm going

to start a task called as

Firefox and percent and I'm going to

gain start the G edit and ampersand

means I'm starting a background task I'm

going to minimize both the task here and

we can find this particular task into

this so just I'm going to refresh the

same so we can check here it was just

showing you the active process so our

Firefox was Firefox is over here so it

is getting you know the ECP utilization

this is this is the priority which is

normal as of now so I just want to raise

their priorities of both of this

particular processes so for that I know

the process for even the process you can

check by using the jobs as well as you

can use by using the - Chi and find out

what the process you want that is

Firefox I want so I can check for

Firefox process this is the process ID

and I want to realize the value I want

to change the priority so I can give

very nice - n

to for example I want to make it a

highest priority that is -18 I'll define

and then I'll define five three six four

hit enter

okay so it's showing you minus 18 is not

for many types of numbers it's okay you

still

- 14

okay so operation is not permitted

because we are not a root or user and

limit of radios I cannot do it

so I'll use this very nice

- n - 18 or - 14 we can use it and 5 3 6

4 hit enter so you can see it has been

changed and net let's see over here the

Firefox is has changed the clarity -

very high

same way we can also change it for thee

get it at well it is again normal I'm

just going to keep it around you know -

for itself you can see here the priority

of your g8 it is again normal if I keep

it

- ten and I'll change the process I am

so sorry I have not changed the process

idea of the machine I made it for your

Firefox so Firefox has gone for high so

if I want to change the process idea of

my Gaea that again I need to check for

the jobs and for that again I want to

get login through thee trainer profile

so trainer is having G added and this is

a job which we are running so again we

will be giving the command PS pays - e

and crap and then the kernel G edit the

process which we are running but showing

you G added notices a process ID again

if I want to change it again I have to

get log in through the loot as we do not

have rights for it I'm going to change

it by giving the command again green

eyes - n - 11 for the G ended process

that is five seven five five we can set

here the G edit s became very high

priority right so this is how we can

change the priority by using the nice

come on so we have seen rise of the Mons

we have seen three nice come on and also

we have seen like how we can change the

priorities and too high very high and

the others with same way we can also use

the net set command to check the net

status that will show you which are the

network ports are enabled which are

running so all this particular of course

I can check into this terminal so next

it I sign more you can check for all the

network status what is the you know the

status of the network is correct so what

are the processes which are running into

back-end and also we have the command so

G this particular all the commands we

generally use for the you know

monitoring process and also we can check

the uptime of the system you can check

this is the uptime and what is the load

average generating system has and also

we have seen the using the PS command

we can use the profiling so we can use

the profile command forgetting the

now profile okay so this command is

brought

okay so user profiling is my supporter

actually be I do not have packages for

it so I won't be able to use it into the

Red Hat so you can also check what the

profiles for thee you know what are the

company process which region really have

so generally we are using PS it is the

same thing which generally we get over

here so the same we have used multiple

utilities to check for the performance

to manage the processes generally we

have even we have seen how we can manage

the process and we can start the process

into the backend we have seen we have

the jobs which are running into the

backend into the trainer terminal so we

can check for the chops which are

running into the backend now if I want

to take it into the foreground process

that I can work it on that so I can use

FG and the process ID I can define or

the job number we can define so right

now we are doing to define F G G edit so

I can see now it has on this particular

process now until I'm closing this

particular process or you know I'm

terminating this particular G edit I

won't be able to get the console that

means it is a foreground process same

way if I want to send anybody care

process with a background again I will

be able to use PG

right so this is the process management

tools and really we have by default into

the Linux operating system and we have

seen how to use those particular tools

so there are a lot of commands there are

a lot of parameters of this commands

which we have just seen into the Linux

operating systems and you can check with

all the particular commands and there

you know the complete parameters we have

so the next we are going to check for

the locks of this particular internal

operating systems so let us see how we

can check it into the next video