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  1. WiredTiger
  2. WT-12119

Create timing stress failpoint for prefetch thread run

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    • Type: Icon: Task Task
    • Resolution: Unresolved
    • Priority: Icon: Major - P3 Major - P3
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    • StorEng - Defined Pipeline

      While debugging various failures in the pre-fetch functionality, we found that adding a delay before pre-fetch threads pop off pages from the pre-fetch queue resulted in faster reproducers. Consider turning this into a timing stress failpoint to assist with detecting future problems.

      @@ -82,6 +82,7 @@ __wt_prefetch_thread_run(WT_SESSION_IMPL *session, WT_THREAD *thread)
     WT_RET(__wt_scr_alloc(session, 0, &tmp));
 
     while (F_ISSET(conn, WT_CONN_PREFETCH_RUN)) {
+        __wt_sleep(0, 5000);
         /*
          * Wait and cycle if there aren't any pages on the queue. It would be nice if this was
          * interrupt driven, but for now just backoff and re-check.

            Assignee:
            backlog-server-storage-engines [DO NOT USE] Backlog - Storage Engines Team
            Reporter:
            monica.ng@mongodb.com Monica Ng
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              Created:
              Updated: