Commit 5b4e1eb7 authored by Juan Quintela's avatar Juan Quintela
Browse files

migration: add XFER_LIMIT_RATIO



The "magic" divisions by 10 are there because of the value of BUFFER_DELAY.
Introduce a constant to explain them better.
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarJuan Quintela <quintela@redhat.com>
parent 0d82d0e8
......@@ -44,6 +44,11 @@ enum {
#define MAX_THROTTLE (32 << 20) /* Migration speed throttling */
/* Amount of time to allocate to each "chunk" of bandwidth-throttled
* data. */
#define BUFFER_DELAY 100
#define XFER_LIMIT_RATIO (1000 / BUFFER_DELAY)
/* Migration XBZRLE default cache size */
#define DEFAULT_MIGRATE_CACHE_SIZE (64 * 1024 * 1024)
......@@ -743,9 +748,6 @@ static int64_t buffered_get_rate_limit(void *opaque)
return s->xfer_limit;
}
/* 100ms xfer_limit is the limit that we should write each 100ms */
#define BUFFER_DELAY 100
static void *buffered_file_thread(void *opaque)
{
QEMUFileBuffered *s = opaque;
......@@ -808,7 +810,7 @@ void qemu_fopen_ops_buffered(MigrationState *migration_state)
s = g_malloc0(sizeof(*s));
s->migration_state = migration_state;
s->xfer_limit = migration_state->bandwidth_limit / 10;
s->xfer_limit = s->migration_state->bandwidth_limit / XFER_LIMIT_RATIO;
s->migration_state->complete = false;
s->file = qemu_fopen_ops(s, &buffered_file_ops);
......
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