Flush and unmap threads do a periodic checkpoint to allow the vacuum thread to make progress sooner
Flush and unmap threads do a periodic checkpoint to allow the vacuum thread to make progress sooner

tempbottle/hlld,authbox/shlld,authbox-lib/slidingd,armon/hlld,authbox-lib/slidingd,tempbottle/hlld,armon/hlld,authbox/shlld,authbox/shlld,tempbottle/hlld,armon/hlld