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Toggle your prefer_direct and/or nonhierarchical_direct settings and look for any changes in the access.log . -
Enable netdb and view the netdb cache manager page after Squid has been running for a while. -
If using ICP or HTCP, count the percentage of requests that experienced a timeout waiting for replies to arrive . -
If you used ”enable-cache-digests and have a reasonably full cache, disable the digest_generation directive and note any change in memory usage. -
Use your operating system's packet filters to block ICP or HTCP messages to your neighbors. How quickly does Squid change their state from alive to dead, and back again? |