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| author | Juan Quintela <quintela@redhat.com> | 2012-12-19 10:40:48 +0100 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2012-12-20 23:09:39 +0100 |
| commit | 5b4e1eb769eee892b44d3f6b2369b05196442f59 (patch) | |
| tree | fcce19b65a6ef7ab70bf00f6151d0e2031e1504c /migration.c | |
| parent | 0d82d0e8b98cf0ea03a45f8542d835ebd3a84cd3 (diff) | |
| download | qemu-5b4e1eb769eee892b44d3f6b2369b05196442f59.zip qemu-5b4e1eb769eee892b44d3f6b2369b05196442f59.tar.gz qemu-5b4e1eb769eee892b44d3f6b2369b05196442f59.tar.bz2 | |
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: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'migration.c')
| -rw-r--r-- | migration.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/migration.c b/migration.c index 2937c87..15f22ea 100644 --- a/migration.c +++ b/migration.c @@ -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); |