Hi there, On Thu, 4 Mar 2021, Michael Kyriacou via clamav-users wrote:
when I type man clamd, I don’t get any information on threads.
Please accept my apologies. I meant the 'man' page for clamd.conf.
I’ve tested setting MaxThreads to 100 vs 16(the amount of vcpus the scanner has), and I did not see a performance increase. What is the recommend setting for MaxThreads/MaxQueue for a 16 core system?
The 'man' page for clamd.conf should give you a better idea. There's more than one thing to think about. I don't know of any specific recommendations for particular systems or even classes of systems. I think you'll need to think about your particular scenario and perhaps experiment with settings. Now that we've identified the issue with use of special characters on your command lines you might find that things start to make more sense to you. Look again at the logs and check the process activity (for example with 'top', or better 'atop'). You might need to look into the documentation about ClamAV's logging get it to help you more.
Also another question- Is there anyway to force clamd to use more RAM to increase performance.
If you're going to scan millions of files for millions of signatures, performance is always going to be an issue, and especially so if a lot of the files will be big archives. You might need to think about the approach, rather than just point the scanner at an enormous data store and hope for the best. You're probably seeing a number of limitations, not just memory. The performance of mass storage I/O, memory and CPU will all bear on the overall performance of your scans. The daemon will use what memory is available to it, but it seems to me that memory is unlikely to be the biggest issue in your system. You need to get a good feel for which resources are under pressure and which aren't. Given what you've said you're doing, I trust that you use exclusively 64-bit executables? -- 73, Ged. _______________________________________________ clamav-users mailing list clamav-users@lists.clamav.net https://lists.clamav.net/mailman/listinfo/clamav-users Help us build a comprehensive ClamAV guide: https://github.com/vrtadmin/clamav-faq http://www.clamav.net/contact.html#ml
