The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    TXN15P/B: Wireless LAN and high CPU usage

    Discussion in 'VAIO / Sony' started by bob_d, Apr 6, 2007.

  1. bob_d

    bob_d Notebook Enthusiast

    Reputations:
    1
    Messages:
    37
    Likes Received:
    0
    Trophy Points:
    15
    When the computer has the wireless LAN activated, my CPU usage hovers at a constant 25% or so (sometimes spiking up to 35%). (Turning off the WLAN causes the CPU to go back down to between 0% and 7%.) Is this normal?

    Surely this will have a negative impact on battery life if I'm using the WLAN feature.

    I have an 802.11b wireless router hooked up to a cable modem, and I am using WEP 128 bit security.
     
    bob_d, Apr 6, 2007
    #1
  2. Kdawgca

    Kdawgca rotaredoM repudrepuS RBN

    Reputations:
    5,855
    Messages:
    8,609
    Likes Received:
    2
    Trophy Points:
    206
    Kdawgca, Apr 6, 2007
    #2
  3. bob_d

    bob_d Notebook Enthusiast

    Reputations:
    1
    Messages:
    37
    Likes Received:
    0
    Trophy Points:
    15
    Thanks for the link, but that doesn't really answer the question of whether such a high CPU usage for wireless networking is normal, even when I'm not doing anything.
     
    bob_d, Apr 6, 2007
    #3
  4. bob_d

    bob_d Notebook Enthusiast

    Reputations:
    1
    Messages:
    37
    Likes Received:
    0
    Trophy Points:
    15
    bump

    So is this normal that wireless networking uses up so much CPU performance?

    I tried turning off the WEP encryption, but there was no difference.

    The CPU usage occurs even though there are no packets being sent and received over the wireless network. Just being connected uses up the CPU cycles. The two processes involved are services.exe and svchost.exe.
     
    bob_d, Apr 7, 2007
    #4