7z benchmark without hyperthreading on i5-1240P

Conclusion

SMT Off (12 Threads)    SMT On (16 Threads)    The Delta
Total Score (Tot)    27,967 MIPS    40,205 MIPS    +43.7% with SMT On
Avg Compression    35,226 MIPS    51,059 MIPS    +44.9% with SMT On
Avg Decompression    20,708 MIPS    29,351 MIPS    +41.7% with SMT On
Max 1T Freq (Single Core)    ~4354 MHz    ~4379 MHz    Virtually identical

Benchmark without hyperthread 

7-Zip 26.01 (x64) : Copyright (c) 1999-2026 Igor Pavlov : 2026-04-27

 64-bit locale=en_US.UTF-8 Threads:16 OPEN_MAX:4096


Compiler:  ver:16.1.1 20260515 (Red Hat 16.1.1-2) GCC 16.1.1 : SSE2

Linux : 7.0.12-201.fc44.x86_64 : #1 SMP PREEMPT_DYNAMIC Thu Jun 11 01:30:16 UTC 2026 : x86_64

PageSize:4KB HPS:2MB THPS:2MB THP:madvise hwcap:2 hwcap2:2

12th Gen Intel(R) Core(TM) i5-1240P

(906A3)  (LP)


1T CPU Freq (MHz):  3093  3992  3707  4310  4347  4325  4354

6T CPU Freq (MHz): 578% 3288   574% 3285  

12T CPU Freq (MHz): 973% 2594   838% 2248  


RAM size:   15676 MB (LP),  # CPU hardware threads:  12 / 16 : FF55

RAM usage:   2669 MB (LP),  # Benchmark threads:     12


                       Compressing  |                  Decompressing

Dict     Speed Usage    R/U Rating  |      Speed Usage    R/U Rating

         KiB/s     %   MIPS   MIPS  |      KiB/s     %   MIPS   MIPS


22:      59717   976   5951  58093  |     304017  1133   2288  25923

23:      29297   934   3196  29851  |     247248  1138   1880  21388

24:      27530   927   3192  29601  |     208846  1104   1659  18325

25:      20460   933   2504  23361  |     193263  1125   1528  17195

----------------------------------  | ------------------------------

Avr:     34251   943   3711  35226  |     238344  1125   1839  20708

Tot:            1034   2775  27967  



With hyperthreading

1T CPU Freq (MHz):  3305  4204  4333  4347  4367  4379  4378

8T CPU Freq (MHz): 769% 3238   761% 3162  

16T CPU Freq (MHz): 1041% 2098   1558% 3073  


RAM size:   15676 MB (LP),  # CPU hardware threads:  16

RAM usage:   3559 MB (LP),  # Benchmark threads:     16


                       Compressing  |                  Decompressing

Dict     Speed Usage    R/U Rating  |      Speed Usage    R/U Rating

         KiB/s     %   MIPS   MIPS  |      KiB/s     %   MIPS   MIPS


22:      70657  1369   5022  68735  |     432269  1452   2538  36860

23:      49188  1285   3901  50117  |     404803  1444   2425  35018

24:      40186  1344   3215  43208  |     320151  1466   1916  28091

25:      36937  1366   3087  42174  |     195977  1550   1125  17436

----------------------------------  | ------------------------------

Avr:     49242  1341   3806  51059  |     338300  1478   2001  29351

Tot:            1409   2904  40205 

 

 

 

Allow sudo to use fingerprint auth when laptop lid is open on Fedora 44

I want to achieve the following on Fedora 44 on Thinkpad x1c gen 10,

• fingerprint auth is allowed in sudo
• fingerprint auth not allowed anywhere else
• fingerprint auth is skipped when laptop lid is closed.

I did the following

check current authselect config

authselect current

If the result contains  with-fingerprint, disable it

sudo authselect disable-feature with-fingerprint

cat /etc/pam.d/system-auth to verify that fprintd is not listed

This disables fingerprint auth for everything

Then add these two lines in /etc/pam.d/sudo, immediately below the #%PAM-1.0 line

auth [success=ok default=1] pam_exec.so quiet quiet_log /bin/grep -q open /proc/acpi/button/lid/LID/state
auth   sufficient   pam_fprintd.so

This two lines enables fingerprint auth only when the laptop lid is open.

Lastly, run fprintd-enroll to enroll fingerprints.

 

References

https://www.man7.org/linux/man-pages/man8/pam_exec.8.html

https://www.man7.org/linux/man-pages/man5/pam.conf.5.html 

 

 

 

 

 

Block guest WiFi clients from reaching other hosts on LAN

On Openwrt 25.12, I set up a guest wifi bridge onto LAN,

config wifi-iface 'wifinet2'
    option device 'radio1'
    option mode 'ap'
    option ssid 'xxxx'
    option encryption 'sae-mixed'
    option key 'xxxxxxx'
    option ocv '0'
    option ieee80211w '2'
    option ifname 'wifi-guest'
    option network 'lan'

However, I want to block hosts on the guest wifi from reaching other hosts on br-lan except the router.

I used the following config.

in  /root/guest_isolate.nft 

table bridge guest_isolation
delete table bridge guest_isolation

table bridge guest_isolation {
  chain forward {
    type filter hook forward priority 0; policy accept
    iifname "wifi-guest" counter drop
  }
}

in /etc/config/firewall

config include
        option type 'nftables'
        option path '/root/guest_isolate.nft'
        option position 'ruleset-post'

kmod-nft-bridge package must be installed.

Tecsun M-801 media player review

I acquired a used Tecsun M-801 music player.

The good,

• Built-in FM antenna with decent reception.
• User replaceable 18650 battery.
• USB-C port supports changing and acting as a USB speakerphone.
• It can record audio into a TF card.
• The built-in mic can be used for answering phone calls via bluetooth.
• It exposes its battery level to phones through bluetooth.
• The audio player can resume from previous location within a file. 

The bad,

• The recorded audio is in MP2 format at 160 kbps instead of MP3.
• Does not play AAC audio files. 
• The only knob has two functions. I prefer a dedicated volume knob.
• The USB-C port is not implemented properly to work with USB-C adapters. 
• No AM reception. 
• The speaker has a noticeable noise floor.
• Volume is not synced to phone in bluetooth mode.