ASG S400-20 Content analysis Module "CAS" is showing high memory utilization, and users receive ICAP communication exception when browsing the internet.
CAS Memory utilization can be found on the SysInfo as per the below example:
Trend-group: ASG:host:memory:usage@828112500
ASG:host:memory:usage~hourly@Tue, 29 Mar 2022 15:15:00 UTC[14](60, 60): 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 52 56 59 61 61 61 61 61 61 61 0 0 0 0 0 0 53 62 63 63 64 64 64 64 64 64 64 64 64 64 64 64 64 64 65 65 65 65 65 65 65 66 66
ASG:host:memory:usage~daily15minute@Tue, 29 Mar 2022 15:15:00 UTC[60](96, 900): 89 88 88 87 87 87 87 87 89 89 89 88 87 89 88 90 89 88 88 87 88 88 87 87 87 87 87 88 87 87 87 90 87 87 89 88 87 87 88 88 87 87 87 87 87 87 87 87 87 86 87 87 87 90 90 88 88 88 88 91 91 89 89 88 87 87 87 88 88 88 89 88 88 92 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 61 64 66
ASG:host:memory:usage~daily@Tue, 29 Mar 2022 15:00:00 UTC[14](24, 3600): 91 87 89 89 90 88 87 88 90 88 88 87 87 90 88 91 88 89 0 0 0 0 0 64
ASG:host:memory:usage~weekly@Tue, 29 Mar 2022 12:00:00 UTC[09](28, 21600): 93 91 87 92 87 93 87 96 91 92 91 93 91 90 88 89 87 90 90 92 89 89 91 97 93 90 90 91
ASG:host:memory:usage~monthly@Tue, 29 Mar 2022 00:00:00 UTC[04](31, 86400): 88 89 91 91 93 91 95 91 90 91 92 91 91 92 88 91 91 94 92 92 92 89 91 92 93 93 96 93 90 92 97
ASG:host:memory:usage~yearly@Sun, 27 Mar 2022 00:00:00 UTC[16](52, 604800): 62 62 67 70 70 70 69 67 68 67 65 69 69 80 91 90 96 92 97 93 96 97 94 96 96 97 97 96 92 96 97 96 95 96 93 96 95 95 96 94 97 96 96 97 95 91 90 94 95 92 94 96
Release : 6.7.5
This is a known issue in ASG S400-20 after upgrading to 6.7.5.X, and this is fixed starting from 6.7.5.15 and higher by allocating more memory to the CAS module of the ASG as per the below from ASG 6.7.5.15 release notes:
Advanced Secure Gateway 6.7.5.15 includes a change to memory allocation between SG and host. See "Fixes in Advanced Secure Gateway 6.7.5.15"
Upgrade to 6.7.5.15 or higher to get this fix "adding extra memory to the ASG CAS module"