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Cisco Bug: CSCvt16372 - Proxy runs out of MALLOC memory and stops accepting connections due to memory pressure errors

Last Modified

Oct 28, 2020

Products (1)

  • Cisco IronPort Web Security Appliance Software

Known Affected Releases

11.8.0-414 11.8.0-429 11.8.0-453 12.0.1-334

Description (partial)

Symptom:
Cisco Web Security Appliance shows below errors when looking at "proxylogs":

Warning: PROXY_MISC : - : [5451] Disabling accept handlers due to memory pressure. (4514430976 > 4509715660)
Warning: PROX_CONNTRACK : 15139013 : [96144] ERROR: ID=15139013 : TryMoreServers : couldn't reuse private server conn
Warning: PROX_CONNTRACK : 4626537 : [96498] killed server 2106 due to inactivity, 0, 120440

Cisco Web Security Appliance shows below errors when looking at "prox_track.log":

INFO: MALLOC'ed memory size 4509378176 MMAP'ed memory 4768923648

Conditions:
The number of SSL connections on the WSA is less than the maximum number of SSL connections supported by the appliance
The number of used cache memory blocks is below 1k.
The number of internal memory data structures is below 2k
Proxy is notrunning out of chunk memory either.
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