On 12/7/20 6:03 pm, Nikos Chantziaras wrote: > echo bfq > /sys/block/sda/queue/schedule
Thanks for the hints, ive gone with schedtool and ionice for now (seems to be working) and will configure that as the defaults when this run finishes. I have not built the bfq scheduler in this kernel so will give that a try later - its currently using mq-deadline with a WD blue SSD (will bfq be better than a deadline on an ssd? - will try it and see). It has 4g ram and 4g swap with about half in use - in normal running swap isn't used much, if at all. As well as emerge, the io load is also coming from the network as I have 3x1g bonded interfaces routing busy vlans including a moosefs SAN and a 100mhz uplink which was suffering delays and timeouts. The root cause is trying to do too much with too little - :) BillK
