Results 1 to 10 of 10

Thread: Intel P States - N3350

  1. #1

    Post Intel P States - N3350

    Hello,

    I purchased a new laptop from Asus and it has an Intel N3350 CPU. From my understanding it has a set CPU speed and boosts up or down using C or P states.

    Here is the CPU Info:

    Code:
    processor       : 0
    vendor_id       : GenuineIntel
    cpu family      : 6
    model           : 92
    model name      : Intel(R) Celeron(R) CPU N3350 @ 1.10GHz
    stepping        : 9
    microcode       : 0x2c
    cpu MHz         : 900.000
    cache size      : 1024 KB
    physical id     : 0
    siblings        : 2
    core id         : 0
    cpu cores       : 2
    apicid          : 0
    initial apicid  : 0
    fpu             : yes
    fpu_exception   : yes
    cpuid level     : 21
    wp              : yes
    flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pd
    pe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx 
    est tm2 ssse3 sdbg cx16 xtpr pdcm sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave rdrand lahf_lm 3dnowprefetch ida arat pln pts dtherm i
    ntel_pt retpoline kaiser tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust smep erms mpx rdseed smap clflushopt sha_ni xsaveopt xsavec xgetbv1
    bugs            : cpu_meltdown spectre_v1 spectre_v2
    bogomips        : 2188.80
    clflush size    : 64
    cache_alignment : 64
    address sizes   : 39 bits physical, 48 bits virtual
    power management:
    
    processor       : 1
    vendor_id       : GenuineIntel
    cpu family      : 6
    model           : 92
    model name      : Intel(R) Celeron(R) CPU N3350 @ 1.10GHz
    /proc/cpuinfo lines 1-32/54 55%
    It should be 1.1Ghz and boost up to 2.1Ghz when needed. I am running Leap 42.3.

    Does anyone have any recommendations on how I can improve the performance of my CPU?

    Thank you,
    00USERNAME

  2. #2
    Join Date
    Jun 2008
    Location
    Podunk
    Posts
    26,670
    Blog Entries
    15

    Default Re: Intel P States - N3350

    Quote Originally Posted by 00USERNAME View Post
    Hello,

    I purchased a new laptop from Asus and it has an Intel N3350 CPU. From my understanding it has a set CPU speed and boosts up or down using C or P states.
    <snip>
    Hi and Welcome to the Forum
    Use the command cpupower to check the frequency and boost states, lscpu only provides info on the current frequency when the command is run, so can be random in nature;
    Code:
    cpupower -c all frequency-info
    cpupower monitor mperf
    Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
    SUSE SLE, openSUSE Leap/Tumbleweed (x86_64) | GNOME DE
    If you find this post helpful and are logged into the web interface,
    please show your appreciation and click on the star below... Thanks!

  3. #3

    Default Re: Intel P States - N3350

    Quote Originally Posted by malcolmlewis View Post
    Hi and Welcome to the Forum
    Use the command cpupower to check the frequency and boost states, lscpu only provides info on the current frequency when the command is run, so can be random in nature;
    Code:
    cpupower -c all frequency-info
    cpupower monitor mperf

    Code:
     cpupower -c all frequency-info
    analyzing CPU 0:
      driver: acpi-cpufreq
      CPUs which run at the same hardware frequency: Not Available
      CPUs which need to have their frequency coordinated by software: Not Available
      maximum transition latency: 10.0 us
      hardware limits: 800 MHz - 1.10 GHz
      available frequency steps:  1.10 GHz, 1.10 GHz, 1000 MHz, 900 MHz, 800 MHz
      available cpufreq governors: ondemand performance
      current policy: frequency should be within 800 MHz and 1.10 GHz.
                      The governor "ondemand" may decide which speed to use
                      within this range.
      current CPU frequency: Unable to call hardware
      current CPU frequency: 1.10 GHz (asserted by call to kernel)
      boost state support:
        Supported: yes
        Active: yes
    
    analyzing CPU 1:
      driver: acpi-cpufreq
      CPUs which run at the same hardware frequency: Not Available
      CPUs which need to have their frequency coordinated by software: Not Available
      maximum transition latency: 10.0 us
      hardware limits: 800 MHz - 1.10 GHz
      available frequency steps:  1.10 GHz, 1.10 GHz, 1000 MHz, 900 MHz, 800 MHz
      available cpufreq governors: ondemand performance
      current policy: frequency should be within 800 MHz and 1.10 GHz.
                      The governor "ondemand" may decide which speed to use
                      within this range.
      current CPU frequency: Unable to call hardware
      current CPU frequency: 1.10 GHz (asserted by call to kernel)
      boost state support:
        Supported: yes
        Active: yes
    
    cpupower monitor mperf
    Available monitor Nehalem needs root access
    Available monitor Mperf needs root access
    mperf took 0.00070 seconds and exited with status 0
        |RAPL                       || Idle_Stats                                            
    CPU | pack | core | unco | dram || POLL | C1-B | C1E- | C6-B | C7s- | C8-B | C9-B | C10- 
       0|     0|     0|     0|   122||  0.00|  1.20| 19.60|  0.00| 47.80|  0.00|  0.00|  0.00
       1|     0|     0|     0|   122||  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
    mperf took 0.00222 seconds and exited with status 0
        |RAPL                       || Idle_Stats                                            
    CPU | pack | core | unco | dram || POLL | C1-B | C1E- | C6-B | C7s- | C8-B | C9-B | C10- 
       0|  6897|  5493|     0|   244||  0.00| 32.65|  4.34|  0.00| 18.45|  0.00|  0.00|  0.00
       1|  6897|  5493|     0|   244||  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
    Thank you. Does this look correct?

  4. #4

    Default Re: Intel P States - N3350

    Updated

    Code:
    cpupower monitor mperf
    mperf took 0.00074 seconds and exited with status 0
        |Nehalem                    || Mperf              || RAPL                      || Idle_Stats                                            
    CPU | C3   | C6   | PC3  | PC6  || C0   | Cx   | Freq || pack | core | unco | dram || POLL | C1-B | C1E- | C6-B | C7s- | C8-B | C9-B | C10- 
       0|  0.00|  0.00|  0.00|  0.00|| 86.17| 13.83|  2304||  3845|  3296|     0|   122||  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
       1|  0.00| 54.40|  0.00|  0.00|| 33.83| 66.17|  2205||  3845|  3296|     0|   122||  0.00|  0.00|  0.00|  0.00| 71.23|  0.00|  0.00|  0.00
    mperf took 0.00585 seconds and exited with status 0
        |Nehalem                    || Mperf              || RAPL                      || Idle_Stats                                            
    CPU | C3   | C6   | PC3  | PC6  || C0   | Cx   | Freq || pack | core | unco | dram || POLL | C1-B | C1E- | C6-B | C7s- | C8-B | C9-B | C10- 
       0|  0.00|  4.10|  0.00|  0.00|| 48.00| 52.00|  2344|| 15747|  8789|     0|   732||  0.00| 46.34|  0.00|  0.00|  6.11|  0.00|  0.00|  0.00
       1|  0.00| 82.51|  0.00|  0.00|| 16.37| 83.63|  2298|| 15747|  8789|     0|   732||  0.00|  0.00|  0.00|  0.00| 83.28|  0.00|  0.00|  0.00

  5. #5
    Join Date
    Jun 2008
    Location
    Podunk
    Posts
    26,670
    Blog Entries
    15

    Default Re: Intel P States - N3350

    Quote Originally Posted by 00USERNAME View Post
    Updated

    Code:
    cpupower monitor mperf
    mperf took 0.00074 seconds and exited with status 0
        |Nehalem                    || Mperf              || RAPL                      || Idle_Stats                                            
    CPU | C3   | C6   | PC3  | PC6  || C0   | Cx   | Freq || pack | core | unco | dram || POLL | C1-B | C1E- | C6-B | C7s- | C8-B | C9-B | C10- 
       0|  0.00|  0.00|  0.00|  0.00|| 86.17| 13.83|  2304||  3845|  3296|     0|   122||  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00|  0.00
       1|  0.00| 54.40|  0.00|  0.00|| 33.83| 66.17|  2205||  3845|  3296|     0|   122||  0.00|  0.00|  0.00|  0.00| 71.23|  0.00|  0.00|  0.00
    mperf took 0.00585 seconds and exited with status 0
        |Nehalem                    || Mperf              || RAPL                      || Idle_Stats                                            
    CPU | C3   | C6   | PC3  | PC6  || C0   | Cx   | Freq || pack | core | unco | dram || POLL | C1-B | C1E- | C6-B | C7s- | C8-B | C9-B | C10- 
       0|  0.00|  4.10|  0.00|  0.00|| 48.00| 52.00|  2344|| 15747|  8789|     0|   732||  0.00| 46.34|  0.00|  0.00|  6.11|  0.00|  0.00|  0.00
       1|  0.00| 82.51|  0.00|  0.00|| 16.37| 83.63|  2298|| 15747|  8789|     0|   732||  0.00|  0.00|  0.00|  0.00| 83.28|  0.00|  0.00|  0.00
    Hi
    So the mperf Freq column indicates it is switching 2.3GHz... on my AMD cpu I monitor the mperf output as this shows what it's really doing. You should be fine.
    Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
    SUSE SLE, openSUSE Leap/Tumbleweed (x86_64) | GNOME DE
    If you find this post helpful and are logged into the web interface,
    please show your appreciation and click on the star below... Thanks!

  6. #6

    Default Re: Intel P States - N3350

    Quote Originally Posted by malcolmlewis View Post
    Hi
    So the mperf Freq column indicates it is switching 2.3GHz... on my AMD cpu I monitor the mperf output as this shows what it's really doing. You should be fine.
    Code:
    Mperf  The name comes from the aperf/mperf (average and maximum) MSR registers used which are available on recent X86 processors. It shows the average frequency (including boost frequencies). The fact that on all recent hardware the mperf timer stops ticking in any idle state it is also used to show C0 (processor is active) and Cx (processor is in any sleep state) times. These counters do not have the inaccuracy restrictions the "Idle_Stats" counters may show. May work poorly on Linux-2.6.20 through 2.6.29, as the acpi-cpufreq  kernel frequency driver periodically cleared aperf/mperf registers in those kernels.
    aperf and mperf are values that cpu can handle.

    what I find concerning is

    Code:
    hardware limits: 800 MHz - 1.10 GHz
      available frequency steps:  1.10 GHz, 1.10 GHz, 1000 MHz, 900 MHz, 800 MHz
      available cpufreq governors: ondemand performance
      current policy: frequency should be within 800 MHz and 1.10 GHz.
                      The governor "ondemand" may decide which speed to use
                      within this range.
      current CPU frequency: Unable to call hardware
      current CPU frequency: 1.10 GHz (asserted by call to kernel)
      boost state support:
        Supported: yes
        Active: yes
    As you can see here it shows the ondemand governor is set to operated up to 1.1 Ghz.
    What I am unsure of is "Boost state support" and if it will boost to 2.3 or if I need to adjust my governor accordingly.

  7. #7
    Join Date
    Jun 2008
    Location
    Podunk
    Posts
    26,670
    Blog Entries
    15

    Default Re: Intel P States - N3350

    Quote Originally Posted by 00USERNAME View Post
    Code:
    Mperf
    
      The name comes from the aperf/mperf (average and maximum) MSR registers used which are available on recent X86 processors. It shows the average frequency (including boost frequencies). The fact that on all recent hardware the mperf timer stops ticking in any idle state it is also used to show C0 (processor is active) and Cx (processor is in any sleep state) times. These counters do not have the inaccuracy restrictions the "Idle_Stats" counters may show. May work poorly on Linux-2.6.20 through 2.6.29, as the acpi-cpufreq  kernel frequency driver periodically cleared aperf/mperf registers in those kernels.
    aperf and mperf are values that cpu can handle.

    what I find concerning is

    Code:
    hardware limits: 800 MHz - 1.10 GHz
      available frequency steps:  1.10 GHz, 1.10 GHz, 1000 MHz, 900 MHz, 800 MHz
      available cpufreq governors: ondemand performance
      current policy: frequency should be within 800 MHz and 1.10 GHz.
                      The governor "ondemand" may decide which speed to use
                      within this range.
      current CPU frequency: Unable to call hardware
      current CPU frequency: 1.10 GHz (asserted by call to kernel)
      boost state support:
        Supported: yes
        Active: yes
    As you can see here it shows the ondemand governor is set to operated up to 1.1 Ghz.
    What I am unsure of is "Boost state support" and if it will boost to 2.3 or if I need to adjust my governor accordingly.
    Hi
    No you will never see it in that output, only mperf. With ondemand governor it should just switch automatically in the background.

    Have a read here;
    https://www.kernel.org/doc/html/v4.1...el_pstate.html

    For example on one of my Tumbleweed systems with an i5;
    Code:
    cat /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_max_freq
    310000
    Policy0 = cpu0
    Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
    SUSE SLE, openSUSE Leap/Tumbleweed (x86_64) | GNOME DE
    If you find this post helpful and are logged into the web interface,
    please show your appreciation and click on the star below... Thanks!

  8. #8

    Default Re: Intel P States - N3350

    Quote Originally Posted by malcolmlewis View Post
    Hi
    No you will never see it in that output, only mperf. With ondemand governor it should just switch automatically in the background.

    Have a read here;
    https://www.kernel.org/doc/html/v4.1...el_pstate.html

    For example on one of my Tumbleweed systems with an i5;
    Code:
    cat /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_max_freq
    310000
    Policy0 = cpu0
    Code:
     cat /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_max_freq
    1101000
    Yup

  9. #9

    Default Re: Intel P States - N3350

    I tested it out and when running the test while it's doing something intensive it scales up. All of this cpu governor stuff is relatively new to me.
    Peace, Love, Linux.

    "We are no longer the knights who say Ni! We are now the knights who say ekki-ekki-ekki-pitang-zoom-boing!'"

  10. #10
    Join Date
    Jun 2008
    Location
    Podunk
    Posts
    26,670
    Blog Entries
    15

    Default Re: Intel P States - N3350

    Quote Originally Posted by 00USERNAME View Post
    I tested it out and when running the test while it's doing something intensive it scales up. All of this cpu governor stuff is relatively new to me.
    Hi
    So it's all doing what it's meant to do then, all is good.
    Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
    SUSE SLE, openSUSE Leap/Tumbleweed (x86_64) | GNOME DE
    If you find this post helpful and are logged into the web interface,
    please show your appreciation and click on the star below... Thanks!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •