Quote from the configuration form (admin/settings/throttle):

The throttle module provides a congestion control mechanism that automatically adjusts to a surge in incoming traffic.
If your site is referenced by a popular website, or experiences a "Denial of Service" (DoS) attack, your webserver might become overwhelmed.
The throttle mechanism is utilized by modules to temporarily disable CPU-intensive functionality, increasing performance.

Please, explain (more clearly) in aforementioned quotes:
1) that IF the maximum number of concurrent http-requests/ visitors is reached THEN this module disables selected modules and/ or blocks.
2) that the module throttles new http-requests or (?) sessions (i.e. anonymous and/ or authenticated visitors). If it throttles new http-requests, also mention that this could corrupt data, as selected modules may be disabled/ enabled during (!) sessions.
3) what response (like perhaps "server too busy") throttled http-requests or visitors/ sessions get.
4) where more information can be found: http://drupal.org/handbook/modules/throttle

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not_Dries_Buytaert’s picture

not_Dries_Buytaert CreditAttribution: not_Dries_Buytaert commented
Title: Clarify documentation of core module Throttle » Clarify help text on configuration form of core module Throttle

ad 3) whenever selected modules and/ or block are automatically disabled. Also, which log entries are reported in such cases.

Status: Active » Closed (outdated)

Automatically closed because Drupal 6 is no longer supported. If the issue verifiably applies to later versions, please reopen with details and update the version.