[PATCH V3 11/16] block, bfq: reduce idling only in symmetric scenarios

2017-04-11 Thread Paolo Valente
From: Arianna Avanzini A seeky queue (i..e, a queue containing random requests) is assigned a very small device-idling slice, for throughput issues. Unfortunately, given the process associated with a seeky queue, this behavior causes the following problem: if the

[PATCH V3 11/16] block, bfq: reduce idling only in symmetric scenarios

2017-04-11 Thread Paolo Valente
From: Arianna Avanzini A seeky queue (i..e, a queue containing random requests) is assigned a very small device-idling slice, for throughput issues. Unfortunately, given the process associated with a seeky queue, this behavior causes the following problem: if the process, say P, performs sync