search for: age_buff

...of dirty blocks to write out per wake-cycle nrefill Number of clean buffers to try to obtain each time we call refill nref_dirt buffer threshold for activating bdflush when trying to refill buffers. dummy Unused age_buffer Time for normal buffer to age before we flush it age_super Time for superblock to age before we flush it dummy Unused dummy Unused...

...calculations suggest that the journal on one of these machines would take 10 minutes to fill under a very high (but realistic) load. Under normal load I would expect longer. This seems to suggest that there are dirty buffers lying around that are more than 10 minutes old. Given that bdf_prm.b_un.age_buffer is the default 3000, or 30 seconds, this seems like a problem. I have resolved the problem for now by running "sync" every minute which seems to work, but is hardly elegant. I'm not in a position at the moment to spend time testing whether the inefficacy of bdflush is ext3 specifi...