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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2019 Red Hat Inc.
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#include <ostream>
#include "osd/scheduler/OpScheduler.h"
#include "common/WeightedPriorityQueue.h"
#include "osd/scheduler/mClockScheduler.h"
namespace ceph::osd::scheduler {
OpSchedulerRef make_scheduler(
CephContext *cct, int whoami, uint32_t num_shards, int shard_id,
bool is_rotational, std::string_view osd_objectstore,
op_queue_type_t osd_scheduler, unsigned op_queue_cut_off, MonClient *monc)
{
// Force the use of 'wpq' scheduler for filestore OSDs.
// The 'mclock_scheduler' is not supported for filestore OSDs.
if (op_queue_type_t::WeightedPriorityQueue == osd_scheduler ||
osd_objectstore == "filestore") {
return std::make_unique<
ClassedOpQueueScheduler<WeightedPriorityQueue<OpSchedulerItem, client>>>(
cct,
op_queue_cut_off,
cct->_conf->osd_op_pq_max_tokens_per_priority,
cct->_conf->osd_op_pq_min_cost
);
} else if (op_queue_type_t::mClockScheduler == osd_scheduler) {
// default is 'mclock_scheduler'
return std::make_unique<
mClockScheduler>(cct, whoami, num_shards, shard_id, is_rotational,
op_queue_cut_off, monc);
} else {
ceph_assert("Invalid choice of wq" == 0);
}
}
std::ostream &operator<<(std::ostream &lhs, const OpScheduler &rhs) {
rhs.print(lhs);
return lhs;
}
}
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