Hi there, On Thu, 2 Sep 2021, Karakanovski, Anton via clamav-users wrote:
... we try to make three scans at a same time (some kind of performance test using jmeter) but unfortunately only the first scan is successful and the rests are with code 2 instead of 0.
Please tell us more. What exactly do you do to run three scans simultaneously? Please give main specifications of the machine(s) on which this is done - especially the amount of memory available.
I found in clamAV documentation that clamscan is "one-time scanning" but couldn't understand much. ... Can you please explain what is the actual limitation for clamscan and what means "one-time scanning" - does it mean that only one scan engine could be initiated at a time or only one file could be scan?
If you mean this in the documentation: https://docs.clamav.net/manual/Usage/Scanning.html?highlight=one-time%20scanning#one-time-scanning then the term "one-time scanning" which you have quoted does *not* mean that clamscan can only scan one thing at a time. It simply means that there are many ways to use ClamAV, and doing a "one-time" (or what others might call a "one-off" scan) is one of them. ClamAV can indeed scan more than one thing at a time. Search for 'multiscan' in the documentation. You can even run more than one clamd daemon on the same machine. I've run up to four. But if you use the official signature databases, you will need enough memory so that each clamd (and if you use clamscan, each one of those too) will have about a gigabyte available for its use - and perhaps another one gigabyte (each) during database reloads. If you staggered reloads so that they don't all reload at once, you might be able to share that extra gigabyte between the processes. Just a bit of juggling. -- 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
