Huge SYSTEM registry hive in a Windows 10 laptop,

Discussion in 'Windows 10' started by liam2, Jan 27, 2019.

  1. liam2

    liam2 MDL Junior Member

    Jun 23, 2009
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    Hi, I have this HP laptop with Windows 10 installed, and I realized that the SYSTEM registry hive is huge: 85MB (on my desktop it is only 15MB) and I have found that the culprit is this registry key related to the Synaptics touch pad (I think):

    HKLM\SYSTEM\DriverDatabase\DriverPackages\synpd.inf_amd64_62fc09c761e44bc6\Configurations
    (inside there are keys with names like HP_GROUP8_PS2_Inst)

    it has 141960 subkeys and 782294 values, and exporting it to a reg file results in a 180MB file.

    Anyone knows what is this? Is it necessary? Any chance of get rid of it?
     
  2. freddie-o

    freddie-o MDL Addicted

    Jul 29, 2009
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    #2 freddie-o, Jan 28, 2019
    Last edited: Jan 28, 2019
    Mine is 259 MB in my Windows 10 laptop. I just leave it alone.
    It looks like they are related to your Synaptics touch pad driver
    I'd leave it alone. It might cause problems with your touch pad
     
  3. liam2

    liam2 MDL Junior Member

    Jun 23, 2009
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    Hi, thanks for answering. Do you have that key too? Have you found where does your SYSTEM registry stores that amount of data?
    My laptop is brand new and my SYSTEM hive is not fragmented. It's size is "real".
    Maybe yours is fragmented and you can reduce its size with a registry defragmenter?

    Anyway I think it's ridiculous that a driver stores that amount of data in the registry.
     
  4. freddie-o

    freddie-o MDL Addicted

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    #4 freddie-o, Jan 28, 2019
    Last edited: Jan 28, 2019
    No, but "synpd.inf" is related to synaptics driver. I don't bother too much with the registry except to use the Registry cleaner in CCleaner to tidy up. I do not defragment my Registry--it caused problems for me in the past. Touch pad drivers are usually big.
     
  5. liam2

    liam2 MDL Junior Member

    Jun 23, 2009
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    I don't usually defrag my registry, only when it is really needed (like more than 30%), and always offline, and with a safe tool like sysinternals ru.exe. But I usually keep track of my registry fragmentation with my favorite registry editor (Registry Workshop), cause programs that writes and deletes a lot in the registry like portable programs, which I use a lot, may cause eventually, a big and fragmented registry.

    I'll keep searching for a solution to this. Maybe it is HP related problem and the generic synaptics drivers does not have this huge registry key. Cause I think it's not the same for the OS to load a 15MB registry hive than a 100MB registry hive.
     
  6. Carlos Detweiller

    Carlos Detweiller MDL Spinning Tortoise

    Dec 21, 2012
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    Should not be a problem as Windows will never load the whole Hive into RAM. It only loads and caches accessed keys, thus the dormant parts will never be loaded.
     
  7. MS_User

    MS_User MDL Guru

    Nov 30, 2014
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    if is not broken dont fix it.;)
     
  8. liam2

    liam2 MDL Junior Member

    Jun 23, 2009
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    I prefer:
    If it is perfect, don't improve it :animatedwink:
     
  9. endbase

    endbase MDL Guru

    Aug 12, 2012
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    I prefer There is no goal like perfection the road you travel is more important than the end of your journey ;)
     
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  10. boyonthebus

    boyonthebus MDL Addicted

    Sep 16, 2018
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    and way more fun! :clap:
     
  11. MS_User

    MS_User MDL Guru

    Nov 30, 2014
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    theirs no such thing as perfection in windows:rolleyes:
     
  12. boyonthebus

    boyonthebus MDL Addicted

    Sep 16, 2018
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    or life itself. :p
     
  13. kaljukass

    kaljukass MDL Expert

    Nov 26, 2012
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    85MB is absolutely normal, if not compressed, but 15MB not possible. Something should be wrong.
     
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  14. liam2

    liam2 MDL Junior Member

    Jun 23, 2009
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    ┬┐did I say so?
     
  15. pf100

    pf100 MDL Expert

    Oct 22, 2010
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    This is not a problem. Forget about it.
     
  16. liam2

    liam2 MDL Junior Member

    Jun 23, 2009
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    Hi, I've made some tests on Windows 10, copying a huge key and removing it several times into HKLM\SOFTWARE and HKLM\SYSTEM, to make those two hives very fragmented and big (Registry Workshop showed me 80% could be defragmented), cause I realized I never had to defrag the registry in my Windows 10 computer, but in my Windows 7 desktop I usually do it twice a year. Then I checked twice a day the registry fragmentation, and after two days I found that the hives fragmentation was 0% again and their size was the original. So Windows 10 defrags the registry automatically when it is needed. I think this is a very good improvement.
     
  17. freddie-o

    freddie-o MDL Addicted

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    #19 freddie-o, Feb 2, 2019
    Last edited: Feb 2, 2019
    Interesting