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-rw-r--r--migration/migration.c28
-rw-r--r--migration/ram.c163
-rw-r--r--migration/ram.h14
3 files changed, 61 insertions, 144 deletions
diff --git a/migration/migration.c b/migration/migration.c
index 9cf47d3..6f0705a 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -592,28 +592,28 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
{
info->has_ram = true;
info->ram = g_malloc0(sizeof(*info->ram));
- info->ram->transferred = ram_bytes_transferred();
+ info->ram->transferred = ram_counters.transferred;
info->ram->total = ram_bytes_total();
- info->ram->duplicate = dup_mig_pages_transferred();
+ info->ram->duplicate = ram_counters.duplicate;
/* legacy value. It is not used anymore */
info->ram->skipped = 0;
- info->ram->normal = norm_mig_pages_transferred();
- info->ram->normal_bytes = norm_mig_pages_transferred() *
+ info->ram->normal = ram_counters.normal;
+ info->ram->normal_bytes = ram_counters.normal *
qemu_target_page_size();
info->ram->mbps = s->mbps;
- info->ram->dirty_sync_count = ram_dirty_sync_count();
- info->ram->postcopy_requests = ram_postcopy_requests();
+ info->ram->dirty_sync_count = ram_counters.dirty_sync_count;
+ info->ram->postcopy_requests = ram_counters.postcopy_requests;
info->ram->page_size = qemu_target_page_size();
if (migrate_use_xbzrle()) {
info->has_xbzrle_cache = true;
info->xbzrle_cache = g_malloc0(sizeof(*info->xbzrle_cache));
info->xbzrle_cache->cache_size = migrate_xbzrle_cache_size();
- info->xbzrle_cache->bytes = xbzrle_mig_bytes_transferred();
- info->xbzrle_cache->pages = xbzrle_mig_pages_transferred();
- info->xbzrle_cache->cache_miss = xbzrle_mig_pages_cache_miss();
- info->xbzrle_cache->cache_miss_rate = xbzrle_mig_cache_miss_rate();
- info->xbzrle_cache->overflow = xbzrle_mig_pages_overflow();
+ info->xbzrle_cache->bytes = xbzrle_counters.bytes;
+ info->xbzrle_cache->pages = xbzrle_counters.pages;
+ info->xbzrle_cache->cache_miss = xbzrle_counters.cache_miss;
+ info->xbzrle_cache->cache_miss_rate = xbzrle_counters.cache_miss_rate;
+ info->xbzrle_cache->overflow = xbzrle_counters.overflow;
}
if (cpu_throttle_active()) {
@@ -623,7 +623,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
if (s->state != MIGRATION_STATUS_COMPLETED) {
info->ram->remaining = ram_bytes_remaining();
- info->ram->dirty_pages_rate = ram_dirty_pages_rate();
+ info->ram->dirty_pages_rate = ram_counters.dirty_pages_rate;
}
}
@@ -2018,8 +2018,8 @@ static void *migration_thread(void *opaque)
bandwidth, threshold_size);
/* if we haven't sent anything, we don't want to recalculate
10000 is a small enough number for our purposes */
- if (ram_dirty_pages_rate() && transferred_bytes > 10000) {
- s->expected_downtime = ram_dirty_pages_rate() *
+ if (ram_counters.dirty_pages_rate && transferred_bytes > 10000) {
+ s->expected_downtime = ram_counters.dirty_pages_rate *
qemu_target_page_size() / bandwidth;
}
diff --git a/migration/ram.c b/migration/ram.c
index ac30e9e..cd6a121 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -74,6 +74,8 @@ static inline bool is_zero_range(uint8_t *p, uint64_t size)
return buffer_is_zero(p, size);
}
+XBZRLECacheStats xbzrle_counters;
+
/* struct contains XBZRLE cache and a static page
used by the compression */
static struct {
@@ -177,8 +179,6 @@ struct RAMState {
bool ram_bulk_stage;
/* How many times we have dirty too many pages */
int dirty_rate_high_cnt;
- /* How many times we have synchronized the bitmap */
- uint64_t bitmap_sync_count;
/* these variables are used for bitmap sync */
/* last time we did a full bitmap_sync */
int64_t time_last_bitmap_sync;
@@ -190,33 +190,11 @@ struct RAMState {
uint64_t xbzrle_cache_miss_prev;
/* number of iterations at the beginning of period */
uint64_t iterations_prev;
- /* Accounting fields */
- /* number of zero pages. It used to be pages filled by the same char. */
- uint64_t zero_pages;
- /* number of normal transferred pages */
- uint64_t norm_pages;
/* Iterations since start */
uint64_t iterations;
- /* xbzrle transmitted bytes. Notice that this is with
- * compression, they can't be calculated from the pages */
- uint64_t xbzrle_bytes;
- /* xbzrle transmmited pages */
- uint64_t xbzrle_pages;
- /* xbzrle number of cache miss */
- uint64_t xbzrle_cache_miss;
- /* xbzrle miss rate */
- double xbzrle_cache_miss_rate;
- /* xbzrle number of overflows */
- uint64_t xbzrle_overflows;
- /* number of dirty bits in the bitmap */
- uint64_t migration_dirty_pages;
- /* total number of bytes transferred */
- uint64_t bytes_transferred;
- /* number of dirtied pages in the last second */
- uint64_t dirty_pages_rate;
- /* Count of requests incoming from destination */
- uint64_t postcopy_requests;
/* protects modification of the bitmap */
+ uint64_t migration_dirty_pages;
+ /* number of dirty bits in the bitmap */
QemuMutex bitmap_mutex;
/* The RAMBlock used in the last src_page_requests */
RAMBlock *last_req_rb;
@@ -228,65 +206,12 @@ typedef struct RAMState RAMState;
static RAMState ram_state;
-uint64_t dup_mig_pages_transferred(void)
-{
- return ram_state.zero_pages;
-}
-
-uint64_t norm_mig_pages_transferred(void)
-{
- return ram_state.norm_pages;
-}
-
-uint64_t xbzrle_mig_bytes_transferred(void)
-{
- return ram_state.xbzrle_bytes;
-}
-
-uint64_t xbzrle_mig_pages_transferred(void)
-{
- return ram_state.xbzrle_pages;
-}
-
-uint64_t xbzrle_mig_pages_cache_miss(void)
-{
- return ram_state.xbzrle_cache_miss;
-}
-
-double xbzrle_mig_cache_miss_rate(void)
-{
- return ram_state.xbzrle_cache_miss_rate;
-}
-
-uint64_t xbzrle_mig_pages_overflow(void)
-{
- return ram_state.xbzrle_overflows;
-}
-
-uint64_t ram_bytes_transferred(void)
-{
- return ram_state.bytes_transferred;
-}
-
uint64_t ram_bytes_remaining(void)
{
return ram_state.migration_dirty_pages * TARGET_PAGE_SIZE;
}
-uint64_t ram_dirty_sync_count(void)
-{
- return ram_state.bitmap_sync_count;
-}
-
-uint64_t ram_dirty_pages_rate(void)
-{
- return ram_state.dirty_pages_rate;
-}
-
-uint64_t ram_postcopy_requests(void)
-{
- return ram_state.postcopy_requests;
-}
+MigrationStats ram_counters;
/* used by the search for pages to send */
struct PageSearchStatus {
@@ -513,7 +438,7 @@ static void xbzrle_cache_zero_page(RAMState *rs, ram_addr_t current_addr)
/* We don't care if this fails to allocate a new cache page
* as long as it updated an old one */
cache_insert(XBZRLE.cache, current_addr, XBZRLE.zero_target_page,
- rs->bitmap_sync_count);
+ ram_counters.dirty_sync_count);
}
#define ENCODING_FLAG_XBZRLE 0x1
@@ -539,11 +464,12 @@ static int save_xbzrle_page(RAMState *rs, uint8_t **current_data,
int encoded_len = 0, bytes_xbzrle;
uint8_t *prev_cached_page;
- if (!cache_is_cached(XBZRLE.cache, current_addr, rs->bitmap_sync_count)) {
- rs->xbzrle_cache_miss++;
+ if (!cache_is_cached(XBZRLE.cache, current_addr,
+ ram_counters.dirty_sync_count)) {
+ xbzrle_counters.cache_miss++;
if (!last_stage) {
if (cache_insert(XBZRLE.cache, current_addr, *current_data,
- rs->bitmap_sync_count) == -1) {
+ ram_counters.dirty_sync_count) == -1) {
return -1;
} else {
/* update *current_data when the page has been
@@ -568,7 +494,7 @@ static int save_xbzrle_page(RAMState *rs, uint8_t **current_data,
return 0;
} else if (encoded_len == -1) {
trace_save_xbzrle_page_overflow();
- rs->xbzrle_overflows++;
+ xbzrle_counters.overflow++;
/* update data in the cache */
if (!last_stage) {
memcpy(prev_cached_page, *current_data, TARGET_PAGE_SIZE);
@@ -589,9 +515,9 @@ static int save_xbzrle_page(RAMState *rs, uint8_t **current_data,
qemu_put_be16(rs->f, encoded_len);
qemu_put_buffer(rs->f, XBZRLE.encoded_buf, encoded_len);
bytes_xbzrle += encoded_len + 1 + 2;
- rs->xbzrle_pages++;
- rs->xbzrle_bytes += bytes_xbzrle;
- rs->bytes_transferred += bytes_xbzrle;
+ xbzrle_counters.pages++;
+ xbzrle_counters.bytes += bytes_xbzrle;
+ ram_counters.transferred += bytes_xbzrle;
return 1;
}
@@ -673,7 +599,7 @@ static void migration_bitmap_sync(RAMState *rs)
int64_t end_time;
uint64_t bytes_xfer_now;
- rs->bitmap_sync_count++;
+ ram_counters.dirty_sync_count++;
if (!rs->time_last_bitmap_sync) {
rs->time_last_bitmap_sync = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
@@ -697,9 +623,9 @@ static void migration_bitmap_sync(RAMState *rs)
/* more than 1 second = 1000 millisecons */
if (end_time > rs->time_last_bitmap_sync + 1000) {
/* calculate period counters */
- rs->dirty_pages_rate = rs->num_dirty_pages_period * 1000
+ ram_counters.dirty_pages_rate = rs->num_dirty_pages_period * 1000
/ (end_time - rs->time_last_bitmap_sync);
- bytes_xfer_now = ram_bytes_transferred();
+ bytes_xfer_now = ram_counters.transferred;
if (migrate_auto_converge()) {
/* The following detection logic can be refined later. For now:
@@ -719,13 +645,13 @@ static void migration_bitmap_sync(RAMState *rs)
if (migrate_use_xbzrle()) {
if (rs->iterations_prev != rs->iterations) {
- rs->xbzrle_cache_miss_rate =
- (double)(rs->xbzrle_cache_miss -
+ xbzrle_counters.cache_miss_rate =
+ (double)(xbzrle_counters.cache_miss -
rs->xbzrle_cache_miss_prev) /
(rs->iterations - rs->iterations_prev);
}
rs->iterations_prev = rs->iterations;
- rs->xbzrle_cache_miss_prev = rs->xbzrle_cache_miss;
+ rs->xbzrle_cache_miss_prev = xbzrle_counters.cache_miss;
}
/* reset period counters */
@@ -734,7 +660,7 @@ static void migration_bitmap_sync(RAMState *rs)
rs->bytes_xfer_prev = bytes_xfer_now;
}
if (migrate_use_events()) {
- qapi_event_send_migration_pass(rs->bitmap_sync_count, NULL);
+ qapi_event_send_migration_pass(ram_counters.dirty_sync_count, NULL);
}
}
@@ -754,11 +680,11 @@ static int save_zero_page(RAMState *rs, RAMBlock *block, ram_addr_t offset,
int pages = -1;
if (is_zero_range(p, TARGET_PAGE_SIZE)) {
- rs->zero_pages++;
- rs->bytes_transferred +=
+ ram_counters.duplicate++;
+ ram_counters.transferred +=
save_page_header(rs, rs->f, block, offset | RAM_SAVE_FLAG_ZERO);
qemu_put_byte(rs->f, 0);
- rs->bytes_transferred += 1;
+ ram_counters.transferred += 1;
pages = 1;
}
@@ -806,7 +732,7 @@ static int ram_save_page(RAMState *rs, PageSearchStatus *pss, bool last_stage)
ret = ram_control_save_page(rs->f, block->offset,
offset, TARGET_PAGE_SIZE, &bytes_xmit);
if (bytes_xmit) {
- rs->bytes_transferred += bytes_xmit;
+ ram_counters.transferred += bytes_xmit;
pages = 1;
}
@@ -817,9 +743,9 @@ static int ram_save_page(RAMState *rs, PageSearchStatus *pss, bool last_stage)
if (ret != RAM_SAVE_CONTROL_NOT_SUPP) {
if (ret != RAM_SAVE_CONTROL_DELAYED) {
if (bytes_xmit > 0) {
- rs->norm_pages++;
+ ram_counters.normal++;
} else if (bytes_xmit == 0) {
- rs->zero_pages++;
+ ram_counters.duplicate++;
}
}
} else {
@@ -845,8 +771,8 @@ static int ram_save_page(RAMState *rs, PageSearchStatus *pss, bool last_stage)
/* XBZRLE overflow or normal page */
if (pages == -1) {
- rs->bytes_transferred += save_page_header(rs, rs->f, block,
- offset | RAM_SAVE_FLAG_PAGE);
+ ram_counters.transferred +=
+ save_page_header(rs, rs->f, block, offset | RAM_SAVE_FLAG_PAGE);
if (send_async) {
qemu_put_buffer_async(rs->f, p, TARGET_PAGE_SIZE,
migrate_release_ram() &
@@ -854,9 +780,9 @@ static int ram_save_page(RAMState *rs, PageSearchStatus *pss, bool last_stage)
} else {
qemu_put_buffer(rs->f, p, TARGET_PAGE_SIZE);
}
- rs->bytes_transferred += TARGET_PAGE_SIZE;
+ ram_counters.transferred += TARGET_PAGE_SIZE;
pages = 1;
- rs->norm_pages++;
+ ram_counters.normal++;
}
XBZRLE_cache_unlock();
@@ -908,7 +834,7 @@ static void flush_compressed_data(RAMState *rs)
qemu_mutex_lock(&comp_param[idx].mutex);
if (!comp_param[idx].quit) {
len = qemu_put_qemu_file(rs->f, comp_param[idx].file);
- rs->bytes_transferred += len;
+ ram_counters.transferred += len;
}
qemu_mutex_unlock(&comp_param[idx].mutex);
}
@@ -938,8 +864,8 @@ static int compress_page_with_multi_thread(RAMState *rs, RAMBlock *block,
qemu_cond_signal(&comp_param[idx].cond);
qemu_mutex_unlock(&comp_param[idx].mutex);
pages = 1;
- rs->norm_pages++;
- rs->bytes_transferred += bytes_xmit;
+ ram_counters.normal++;
+ ram_counters.transferred += bytes_xmit;
break;
}
}
@@ -979,15 +905,15 @@ static int ram_save_compressed_page(RAMState *rs, PageSearchStatus *pss,
ret = ram_control_save_page(rs->f, block->offset,
offset, TARGET_PAGE_SIZE, &bytes_xmit);
if (bytes_xmit) {
- rs->bytes_transferred += bytes_xmit;
+ ram_counters.transferred += bytes_xmit;
pages = 1;
}
if (ret != RAM_SAVE_CONTROL_NOT_SUPP) {
if (ret != RAM_SAVE_CONTROL_DELAYED) {
if (bytes_xmit > 0) {
- rs->norm_pages++;
+ ram_counters.normal++;
} else if (bytes_xmit == 0) {
- rs->zero_pages++;
+ ram_counters.duplicate++;
}
}
} else {
@@ -1007,8 +933,8 @@ static int ram_save_compressed_page(RAMState *rs, PageSearchStatus *pss,
blen = qemu_put_compression_data(rs->f, p, TARGET_PAGE_SIZE,
migrate_compress_level());
if (blen > 0) {
- rs->bytes_transferred += bytes_xmit + blen;
- rs->norm_pages++;
+ ram_counters.transferred += bytes_xmit + blen;
+ ram_counters.normal++;
pages = 1;
} else {
qemu_file_set_error(rs->f, blen);
@@ -1216,7 +1142,7 @@ int ram_save_queue_pages(const char *rbname, ram_addr_t start, ram_addr_t len)
RAMBlock *ramblock;
RAMState *rs = &ram_state;
- rs->postcopy_requests++;
+ ram_counters.postcopy_requests++;
rcu_read_lock();
if (!rbname) {
/* Reuse last RAMBlock */
@@ -1404,13 +1330,12 @@ static int ram_find_and_save_block(RAMState *rs, bool last_stage)
void acct_update_position(QEMUFile *f, size_t size, bool zero)
{
uint64_t pages = size / TARGET_PAGE_SIZE;
- RAMState *rs = &ram_state;
if (zero) {
- rs->zero_pages += pages;
+ ram_counters.duplicate += pages;
} else {
- rs->norm_pages += pages;
- rs->bytes_transferred += size;
+ ram_counters.normal += pages;
+ ram_counters.transferred += size;
qemu_update_position(f, size);
}
}
@@ -2060,7 +1985,7 @@ static int ram_save_iterate(QEMUFile *f, void *opaque)
ram_control_after_iterate(f, RAM_CONTROL_ROUND);
qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
- rs->bytes_transferred += 8;
+ ram_counters.transferred += 8;
ret = qemu_file_get_error(f);
if (ret < 0) {
diff --git a/migration/ram.h b/migration/ram.h
index d4da419..6272eb0 100644
--- a/migration/ram.h
+++ b/migration/ram.h
@@ -32,19 +32,11 @@
#include "qemu-common.h"
#include "exec/cpu-common.h"
+extern MigrationStats ram_counters;
+extern XBZRLECacheStats xbzrle_counters;
+
int64_t xbzrle_cache_resize(int64_t new_size);
-uint64_t dup_mig_pages_transferred(void);
-uint64_t norm_mig_pages_transferred(void);
-uint64_t xbzrle_mig_bytes_transferred(void);
-uint64_t xbzrle_mig_pages_transferred(void);
-uint64_t xbzrle_mig_pages_cache_miss(void);
-double xbzrle_mig_cache_miss_rate(void);
-uint64_t xbzrle_mig_pages_overflow(void);
-uint64_t ram_bytes_transferred(void);
uint64_t ram_bytes_remaining(void);
-uint64_t ram_dirty_sync_count(void);
-uint64_t ram_dirty_pages_rate(void);
-uint64_t ram_postcopy_requests(void);
uint64_t ram_bytes_total(void);
void migrate_compress_threads_create(void);
generated by cgit v1.1 at 2024-12-28 02:49:35 +0000