Bug #41140

Updated by Patrick Donnelly over 3 years ago

Under -create- workloads that result in the acquisition of a lot of capabilities, large create workloads, the MDS can't trim the cache fast enough. The cache trimming throttle gets hit at ~64K dentries removed but because the upkeep trimming only occurs every 5 seconds, the cache is trimmed too slowly.

It's undesirable to just increase the throttle limit from 64K to 512K as then the MDS spends a long time trimming the cache every 5 seconds. A better approach would be to drive cache trimming more regularly.

See also thread: