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  • Is Clamav worth it vs. system requirements?

    Posted on Charlie Comment on the AskWoody Lounge

    Home Forums AskWoody support Other platforms – for Windows wonks Linux for Windows wonks Is Clamav worth it vs. system requirements?

    This topic contains 13 replies, has 7 voices, and was last updated by  mn– 1 month ago.

    • Author
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    • #1911452 Reply

      Charlie
      AskWoody Plus

      I’m thinking to install Clamav on my Sony VAIO laptop and was just wondering if the system requirements draw would be too much for a machine with only 2 Gigs of RAM.  I have not been able to find the System Requirements for Clamav + daemon +freshclam + clamtk.

      Has anyone seen any info. on this as I don’t want to overwork my laptop by running an AV program full time.

      Win 7 Home Premium, x64, Intel i3-2120 3.3GHz, Groups B & L

    • #1911454 Reply

      PKCano
      Da Boss

      Clamav has a portable version.

      1 user thanked author for this post.
    • #1911456 Reply

      Charlie
      AskWoody Plus

      I forgot to say that I’m running Linux Mint 19.1 Cinnamon.  Does the portable version work with this?  On a flash drive I assume.

      Win 7 Home Premium, x64, Intel i3-2120 3.3GHz, Groups B & L

      • #1911459 Reply

        PKCano
        Da Boss

        I believe so. I think you can put it on the PC in a folder as well.

        1 user thanked author for this post.
    • #1911464 Reply

      DrBonzo
      AskWoody Plus

      For whatever this is worth – I’m running Ubuntu 16.04 LTS on a 10 year old HP laptop. All-in-all it runs very well: fast boots, responsive, etc.

      BUT in my experience ClamAV is a worthless product, at least on my machine. I believe you can run it from a flash drive, although I’ve installed it on the hard drive. It’s impossibly slow, the user interface is almost useless, it won’t update definitions, well you get the idea. I’ve only used it with a graphical interface, so maybe it would be better when running from a terminal.

      Also, if you go looking for comparative test results, I think you’ll find it really isn’t that effective.

      I’ve trashed it and no longer use it. I suggest you look elsewhere – I believe Avast has a decent package, although I haven’t tried it. I’m currently running without AV, although this machine is not my daily driver; it’s an in-case-all-else-fails machine.

      Good luck in your AV search, and let us know if you find a good one.

      1 user thanked author for this post.
      • #1911474 Reply

        Charlie
        AskWoody Plus

        Thanks for that info.  My Sony is a 2006 with an Intel Core 2 which handles LM 19.1 very nicely with 2 Gigs of RAM.  I’m looking for an AV program that won’t put a damper on things.  Any time I hear Avast mentioned I think big memory hog.  But I’ll keep looking, and I’ll most likely have to increase the RAM anyway if that’s still possible.

        Win 7 Home Premium, x64, Intel i3-2120 3.3GHz, Groups B & L

      • #1911483 Reply

        mn–
        AskWoody Lounger

        Yeah, Clamav is a bit odd in some ways. Freshclam autoupdate needs to be enabled separately in most cases and…

        Also there’s the fact that any scan-on-access tool with decent coverage will have a noticeable performance impact on a system with 2 GB RAM – no way around it, given all the various kinds of malware that it’ll have to be able to detect these days.

        Still, last time I checked it was the lightest-weight alternative… hm, really should check how much load Sophos’s Linux version generates if I switch its kernel interface from talpa to fanotify… that’s definitely a server-focused product though.

        1 user thanked author for this post.
      • #1912161 Reply

        anonymous

        Not good news ClamAV is still to slow to initialize and update definitions using Ubuntu 18.04.3, and there is disparity between VirusTotal results and the local ClamAV installation.

        VirusTotal’s ClamAV configuration and scanning engine are probably different from Ubuntu’s package.

        1 user thanked author for this post.
    • #1911495 Reply

      JohnW
      AskWoody Plus

      Linux doesn’t need AV.

      Windows definitely does. 🙂

    • #1911499 Reply

      anonymous

      https://askubuntu.com/questions/114000/how-to-update-clamav-definitions-database

      Updating Clam AntiVirus Definitions

      http://www.linuxandubuntu.com/home/clamav-antivirus-scanner-for-linux-review-installation-usage

      Very Recent Review of Clam Antivirus

      And remember most Antivirus are Closed Source. However Clam is Open Source.

      https://en.wikipedia.org/wiki/Clam_AntiVirus

      IMO if you are running Linux ( An open Source OS ), why not use an open source Anitvirus as well?

      1 user thanked author for this post.
    • #1911729 Reply

      Ascaris
      AskWoody_MVP

      You don’t have to run real-time on-demand scanning in order to make use of Clam.  I have it installed, but only with on-demand scanning configured.

      Real-time scanning always has a performance hit… the only question is how severe it will be.  You can always try it and see how it goes, and if it slows things down too much or uses too much RAM, you can stop using the real-time function.  The odds of something being there for it to find in Linux is quite slim, so a periodic on-demand scan may give you the peace of mind you are looking for, without any performance hit.

      Group "L" (KDE Neon User Edition 5.16.5).

      1 user thanked author for this post.
      • #1911736 Reply

        mn–
        AskWoody Lounger

        Oh, BTW, I even have Clamav installed in a WSL instance.

        The –detect-pua functionality is occasionally nice in an on-demand tool even if the WSL causes a performance penalty…

        Yes, there’s other things installed as Windows-native tools on that system.

      • #1912256 Reply

        Charlie
        AskWoody Plus

        That sounds like the way to go Ascaris.  So I’ll not get the daemon or freshclam, and do the scanning and updating manually.  Guess there’s only one way to find out and that’s to try it.  If I don’t like it can it be uninstalled with Program Installer?

        Win 7 Home Premium, x64, Intel i3-2120 3.3GHz, Groups B & L

        • #1914429 Reply

          mn–
          AskWoody Lounger

          Rather, get freshclam but run that only manually…

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