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Cisco Bug: CSCus79598 - SDS / CASE race condition, high SDS CPU, low CASE CPU = slow workqueue

Last Modified

Sep 13, 2018

Products (1)

  • Cisco Email Security Appliance

Known Affected Releases

8.5.6-092

Description (partial)

Symptom:
Low antispam CPU + slow workqueue processing + the following errors hundreds of times  in antispam logs:


Wed Feb  4 12:12:03 2015 Warning: case antispam - engine (42057) : [MID 427512558] (tsb. at Mail/case-daemon/Plugin/WebInt.pm line 1211.
Wed Feb  4 12:12:03 2015 Warning: case antispam - engine (42057) : [MID 427512558] webint: request id [42057.1423073523] failed at Mail/case-daemon/Plugin/WebInt.pm line 1083.
Wed Feb  4 12:12:03 2015 Warning: case antispam - engine (42056) : [MID 427512556] webint: ESA error for request 42056.1423073523 - ccopy_reg

Conditions:
This can be a symptom of excessive network delays and increased DNS lookup times. use 'websecuritydiagnostics' command to see what the current response time and DNS lookup times look like.

c670e07.ibeng> websecuritydiagnostics

1. Show statistics for entire uptime duration
2. Show statistics for most recent 600 seconds
[1]>2 

Available Data Range (10 minutes): Thu May 21 16:08:24 2015 to Thu May 21 16:18:27 2015
URLs in Cache : 12334 
Cache Hits : 6543 
URL Requests : 78643 
Response Time (milliseconds)
Minimum : 45.5600
Average : 67.3400
Maximum : 128.0000
DNS Lookup Time (milliseconds)
Minimum : 10.0450
Average : 30.1000
Maximum : 70.5000
c670e07.ibeng> 

If these appear excessive, implement the suggested workaround
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