int db_env_set_pageyield(int pageyield);
Yield the processor whenever requesting a page from the cache. Setting pageyield to a non-zero value causes Berkeley DB to yield the processor any time a thread requests a page from the cache. This functionality should never be used for any other purpose than stress testing.
The db_env_set_pageyield interface affects the entire application, not a single database or database environment.
The db_env_set_pageyield interface may be used to configure Berkeley DB at any time during the life of the application.
The db_env_set_pageyield function returns a non-zero error value on failure and 0 on success.
The db_env_set_pageyield function may fail and return a non-zero error for the following conditions:
The db_env_set_pageyield function may fail and return a non-zero error for errors specified for other Berkeley DB and C library or system functions. If a catastrophic error has occurred, the db_env_set_pageyield function may fail and return DB_RUNRECOVERY, in which case all subsequent Berkeley DB calls will fail in the same way.
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