blob: cf8a4f0410da61637462aae084e4aaf02ca60458 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/*
* Migration stats
*
* Copyright (c) 2012-2023 Red Hat Inc
*
* Authors:
* Juan Quintela <quintela@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef QEMU_MIGRATION_STATS_H
#define QEMU_MIGRATION_STATS_H
#include "qemu/stats64.h"
/*
* These are the ram migration statistic counters. It is loosely
* based on MigrationStats. We change to Stat64 any counter that
* needs to be updated using atomic ops (can be accessed by more than
* one thread).
*/
typedef struct {
/*
* Number of bytes that were dirty last time that we synced with
* the guest memory. We use that to calculate the downtime. As
* the remaining dirty amounts to what we know that is still dirty
* since last iteration, not counting what the guest has dirtied
* since we synchronized bitmaps.
*/
Stat64 dirty_bytes_last_sync;
/*
* Number of pages dirtied per second.
*/
Stat64 dirty_pages_rate;
/*
* Number of times we have synchronized guest bitmaps.
*/
Stat64 dirty_sync_count;
/*
* Number of times zero copy failed to send any page using zero
* copy.
*/
Stat64 dirty_sync_missed_zero_copy;
/*
* Number of bytes sent at migration completion stage while the
* guest is stopped.
*/
Stat64 downtime_bytes;
/*
* Number of bytes sent through multifd channels.
*/
Stat64 multifd_bytes;
/*
* Number of pages transferred that were not full of zeros.
*/
Stat64 normal_pages;
/*
* Number of bytes sent during postcopy.
*/
Stat64 postcopy_bytes;
/*
* Number of postcopy page faults that we have handled during
* postcopy stage.
*/
Stat64 postcopy_requests;
/*
* Number of bytes sent during precopy stage.
*/
Stat64 precopy_bytes;
/*
* Total number of bytes transferred.
*/
Stat64 transferred;
/*
* Number of pages transferred that were full of zeros.
*/
Stat64 zero_pages;
} MigrationAtomicStats;
extern MigrationAtomicStats mig_stats;
#endif
|
