416        /* Wait while the dirty level is going down. */
417        for (;;) {
418                __wt_sleep(0, 100 * WT_THOUSAND);
419
   	
CID 1393639 (#1 of 1): Unused value (UNUSED_VALUE)
returned_value: Assigning value from __wt_clock(session) to time_stop here, but that stored value is overwritten before it can be used.

420                time_stop = __wt_clock(session);
421                bytes_written_total =
422                    cache->bytes_written - bytes_written_start;
423
424                prev_dirty = current_dirty;
425                current_dirty =
426                    (100.0 * __wt_cache_dirty_leaf_inuse(cache)) / cache_size;
427                if (current_dirty <= cache->eviction_checkpoint_target ||
428                    current_dirty >= prev_dirty)
429                        break;