How to tell what grade of CPU your phone has? - AT&T LG Optimus G

So, I was searching around the Nexus 4 forum when I found this exert from the Harsh Kernel thread. Don't know if this would be doable on our phones, but I tried it through terminal and it didn't seem to work. But . . . . I'm not the smartest Linux user . .
Well, our cpu are made at some quality standards. We have 4 different quality of cpu for apq8064 from Qualcomm. so depending on which one is on your phone it selects frequency table from slow, nominal, fast and faster.
Google kernel source have same frequency table for fast and faster. So those with faster are not getting their extra advantage
Quote:
You can identify you CPU chip by below command in terminal.
adb shell dmesg | grep PVS
It will give you some output as given example below
Code:
adb shell dmesg | grep PVS
[ 0.873920] acpuclk-8064 acpuclk-8064: ACPU PVS: FAST
And faster binned CPU has lot to do with UV, when you look as frequency table of faster, it is already preconfigured to have lower voltages than fast, and lot lower than slow binned.
Phones with faster binned should have better battery than slower binned phone out of box without any other configuration.
And for UV its already hardcoded and can be adjusted by System Tuner app further. And OC I am not willing to add. Maybe will adjust frequency(underclock) later on but hardcoded and tested.
Click to expand...
Click to collapse
Here's the Linky to the actual thread

---

That's a good question. Hmm. Seems like there should be a forum for questions like this and the answers to those questions...

---

Nastybutler said:
That's a good question. Hmm. Seems like there should be a forum for questions like this and the answers to those questions...
Click to expand...
Click to collapse
Oh I see what you just did there... :thumbup:
Well played, sir, well played.
Sent from my LG-E970 using xda app-developers app

---

Nastybutler said:
That's a good question. Hmm. Seems like there should be a forum for questions like this and the answers to those questions...
Click to expand...
Click to collapse
I literally thought I was in the Q&A forum. My bad.
(Waits for the Mods to move to correct forum)
While you've read the thread . . . . any idea on if this would work for our devices?

---

Globalrebel said:
I literally thought I was in the Q&A forum. My bad.
Click to expand...
Click to collapse
I thought I'd go for a gentle, subtle route as opposed to the usual, "This is in the wrong forum" reply.
Globalrebel said:
While you've read the thread . . . . any idea on if this would work for our devices?
Click to expand...
Click to collapse
I hope someone much smarter and more knowledgeable than I can answer this question; it's way out of my depth.

---

Get Sk8erwitskil in this thread. I had no idea about this until he was talking about it in his kernel thread
Sent from my LG-E970 using xda premium

---

This command doesn't work for our kernel. I also looked at the entire dmsg and couldn't find anything close to that.

---

Patsfan123 said:
This command doesn't work for our kernel. I also looked at the entire dmsg and couldn't find anything close to that.
Click to expand...
Click to collapse
you need to be rooted and grant root access to android shell.
try this one:
reboot
open android terminal emulator
su
cat /proc/last_kmsg | grep PVS
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

---

chrone said:
you need to be rooted and grant root access to android shell.
try this one:
reboot
open android terminal emulator
su
cat /proc/last_kmsg | grep PVS
Click to expand...
Click to collapse
That didn't work for me.
Sent from my badass LG Optimus G

---

Nastybutler said:
That didn't work for me.
Sent from my badass LG Optimus G
Click to expand...
Click to collapse
oops sorry, i was on nexus 4, thought we're using same hardware and the method would work.
Sent from my Nexus 4

---

chrone said:
oops sorry, i was on nexus 4, thought we're using same hardware and the method would work.
Sent from my Nexus 4
Click to expand...
Click to collapse
It was worth a shot. Thanks for trying.
Sent from my Nexus 7 using Tapatalk HD

---

chrone said:
you need to be rooted and grant root access to android shell.
try this one:
reboot
open android terminal emulator
su
cat /proc/last_kmsg | grep PVS
Click to expand...
Click to collapse
You may have to reboot twice in a row. /proc/last_kmsg holds the kernel message buffer as it was when you last rebooted. But it's limited in size and older messages get thrown away to make room for new. So the first time you reboot, if the relevant info has already scrolled past, it won't be saved. The second time you reboot, the messages from the beginning of the boot are still there
(also, depending on your rom and how you rooted, you may not have grep, but you should have busybox - so if "grep" is not found, use "busybox grep" in its place)
Here's what I see on mine (stock rom):
[70-01-01 00:00:00.070] get_pvs: ACPU PVS: Faster
(this is before the time gets set)

---

jdock said:
You may have to reboot twice in a row. /proc/last_kmsg holds the kernel message buffer as it was when you last rebooted. But it's limited in size and older messages get thrown away to make room for new. So the first time you reboot, if the relevant info has already scrolled past, it won't be saved. The second time you reboot, the messages from the beginning of the boot are still there
(also, depending on your rom and how you rooted, you may not have grep, but you should have busybox - so if "grep" is not found, use "busybox grep" in its place)
Here's what I see on mine (stock rom):
[70-01-01 00:00:00.070] get_pvs: ACPU PVS: Faster
(this is before the time gets set)
Click to expand...
Click to collapse
Rebooting twice did the trick I think! It tells me my ACPU PVS is 1. Does that mean I have the slowest CPU?
Sent from my Nexus 7 using Tapatalk HD

---

Nastybutler said:
Rebooting twice did the trick I think! It tells me my ACPU PVS is 1. Does that mean I have the slowest CPU?
Sent from my Nexus 7 using Tapatalk HD
Click to expand...
Click to collapse
@Nastybutler, I bet you had eco mode on. Lol. I did this with eco mode on and it showed "1". With echo mode off it showed "FASTER".
Sent from my LG-E970 using xda premium

---

Cojam1 said:
@Nastybutler, I bet you had eco mode on. Lol. I did this with eco mode on and it showed "1". With echo mode off it showed "FASTER".
Sent from my LG-E970 using xda premium
Click to expand...
Click to collapse
Nope. I haven't used Eco mode since going to the SnowJB ROM. Guess I'll try it again just to see.
Sent from my Nexus 7 using Tapatalk HD

---

Nastybutler said:
Nope. I haven't used Eco mode since going to the SnowJB ROM. Guess I'll try it again just to see.
Sent from my Nexus 7 using Tapatalk HD
Click to expand...
Click to collapse
Oh well, my bad. . Give it a shot though and see with you come up with.
Sent from my LG-E970 using xda premium

---

Nastybutler said:
Nope. I haven't used Eco mode since going to the SnowJB ROM. Guess I'll try it again just to see.
Sent from my Nexus 7 using Tapatalk HD
Click to expand...
Click to collapse
It looks like you do have eco mode at least enabled, look at the leaf in the status bar of the screen shot.

---

Sent from my LG-E970 using xda premium

---

have you guys succeed by doing this command line?
adb shell dmesg | grep PVS
Click to expand...
Click to collapse

---

jsylvia007 said:
It looks like you do have eco mode at least enabled, look at the leaf in the status bar of the screen shot.
Click to expand...
Click to collapse
That's Power Saver mode which has nothing to do with the processor. It just changes the phone's profile when the battery hits a certain level.
Sent from my Nexus 7 using Tapatalk HD