Tag Name icp_query_timeout (msecs)
Usage icp_query_timeout milliseconds

Description
Normally Squid will automatically determine an optimal ICP query timeout value based on the round-trip-time of recent ICP queries. If you want to override the value determined by Squid, set this ‘icp_query_timeout’ to a non-zero value .

Default icp_query_timeout 0

Example
This value is specified in MILLISECONDS, so, to use a 2-second timeout (the old default), you would write: icp_query_timeout 2000.