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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2019 Red Hat Inc. | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | ||
15 | #include <ostream> | |
16 | ||
17 | #include "osd/scheduler/OpScheduler.h" | |
18 | ||
19 | #include "common/WeightedPriorityQueue.h" | |
20 | #include "osd/scheduler/mClockScheduler.h" | |
21 | ||
22 | namespace ceph::osd::scheduler { | |
23 | ||
f67539c2 | 24 | OpSchedulerRef make_scheduler( |
39ae355f TL |
25 | CephContext *cct, int whoami, uint32_t num_shards, int shard_id, |
26 | bool is_rotational, std::string_view osd_objectstore, MonClient *monc) | |
9f95a23c TL |
27 | { |
28 | const std::string *type = &cct->_conf->osd_op_queue; | |
29 | if (*type == "debug_random") { | |
30 | static const std::string index_lookup[] = { "mclock_scheduler", | |
31 | "wpq" }; | |
32 | srand(time(NULL)); | |
33 | unsigned which = rand() % (sizeof(index_lookup) / sizeof(index_lookup[0])); | |
34 | type = &index_lookup[which]; | |
35 | } | |
36 | ||
20effc67 TL |
37 | // Force the use of 'wpq' scheduler for filestore OSDs. |
38 | // The 'mclock_scheduler' is not supported for filestore OSDs. | |
39 | if (*type == "wpq" || osd_objectstore == "filestore") { | |
9f95a23c TL |
40 | return std::make_unique< |
41 | ClassedOpQueueScheduler<WeightedPriorityQueue<OpSchedulerItem, client>>>( | |
42 | cct, | |
43 | cct->_conf->osd_op_pq_max_tokens_per_priority, | |
44 | cct->_conf->osd_op_pq_min_cost | |
45 | ); | |
46 | } else if (*type == "mclock_scheduler") { | |
20effc67 | 47 | // default is 'mclock_scheduler' |
39ae355f TL |
48 | return std::make_unique< |
49 | mClockScheduler>(cct, whoami, num_shards, shard_id, is_rotational, monc); | |
9f95a23c TL |
50 | } else { |
51 | ceph_assert("Invalid choice of wq" == 0); | |
52 | } | |
53 | } | |
54 | ||
55 | std::ostream &operator<<(std::ostream &lhs, const OpScheduler &rhs) { | |
56 | rhs.print(lhs); | |
57 | return lhs; | |
58 | } | |
59 | ||
60 | } |