Status messages in the client log show low CPU usage by avtar.exe
(see Dell article Avamar - How to interpret avtar backup log status lines)
avtar
process for the storage I/O by intercepting files which avtar
is trying to access.
avtar
process for access to the snapshot that was taken as part of the backup.
--status=120
in additional options to increase the frequency of status messages for testing.
avtar Info <6083>: Backed-up 344.3 GB in 862.43 minutes: 24 GB/hour (1,508,688 files/hour)If backup performance is improved with on-access scanning disabled, configure the anti-virus software to trust application activity by Avamar binaries or to ignore the reads.
avtar.exe
, the executables to trust or safe-list from anti-virus ON ACCESS SCANNING are below. The files are typically installed in the c:\program files\avs\bin
folder:
avexchglr.exe Exchange Server GLR avexvss.exe Exchange Server axionfs.exe Exchange Server GLR avoracle.exe Oracle avlotus.exe Lotus Notes avscc.exe Desktop Icon avagent.exe Communication service between the client and Avamar server avvss.exe Disaster Recovery, BMR avmossvss.exe SharePoint Servers avupdate.exe Client update toolAfter resolving this type of interference from anti-virus software, if backup performance is still low, see Dell article: Avamar slow backup performance - how to troubleshoot and identify bottlenecks (RESOLUTION PATH)
The behavior described occurs with any anti-virus program that performs "real-time" or "on-access" scanning.
Below are links to suggested articles of various anti-virus vendors' online documentation that discuss the behavior or how to mitigate it.
Symantec EndPoint Protection
Trend Micro Office scan
Sophos
Quick Heal Endpoint Security
ESET Endpoint anti-virus
Panda Security
CrowdStrike
Microsoft
Carbon Black
Fortinet
Trellix (FireEye)
Cisco AMP
Rapid7