* [PATCH v2] migration/xbzrle: add encoding rate
@ 2020-04-27 8:01 Wei Wang
2020-04-28 14:51 ` Dr. David Alan Gilbert
0 siblings, 1 reply; 4+ messages in thread
From: Wei Wang @ 2020-04-27 8:01 UTC (permalink / raw)
To: qemu-devel, quintela, dgilbert, peterx
Cc: kevin.tian, berrange, yi.y.sun, gloryxiao, wei.w.wang
Users may need to check the xbzrle encoding rate to know if the guest
memory is xbzrle encoding-friendly, and dynamically turn off the
encoding if the encoding rate is low.
Signed-off-by: Yi Sun <yi.y.sun@intel.com>
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
---
migration/migration.c | 1 +
migration/ram.c | 38 ++++++++++++++++++++++++++++++++++++--
monitor/hmp-cmds.c | 2 ++
qapi/migration.json | 5 ++++-
4 files changed, 43 insertions(+), 3 deletions(-)
ChangeLog:
- include the 3 bytes (ENCODING_FLAG_XBZRLE flag and encoded_len) when
calculating the encoding rate. Similar to the compress rate
calculation, the 8 byte RAM_SAVE_FLAG_CONTINUE flag isn't included in
the calculation.
diff --git a/migration/migration.c b/migration/migration.c
index 187ac04..e404213 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -930,6 +930,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
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->encoding_rate = xbzrle_counters.encoding_rate;
info->xbzrle_cache->overflow = xbzrle_counters.overflow;
}
diff --git a/migration/ram.c b/migration/ram.c
index 04f13fe..f46ab96 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -327,6 +327,10 @@ struct RAMState {
uint64_t num_dirty_pages_period;
/* xbzrle misses since the beginning of the period */
uint64_t xbzrle_cache_miss_prev;
+ /* Amount of xbzrle pages since the beginning of the period */
+ uint64_t xbzrle_pages_prev;
+ /* Amount of xbzrle encoded bytes since the beginning of the period */
+ uint64_t xbzrle_bytes_prev;
/* compression statistics since the beginning of the period */
/* amount of count that no free thread to compress data */
@@ -696,6 +700,18 @@ static int save_xbzrle_page(RAMState *rs, uint8_t **current_data,
return -1;
}
+ /*
+ * Reaching here means the page has hit the xbzrle cache, no matter what
+ * encoding result it is (normal encoding, overflow or skipping the page),
+ * count the page as encoded. This is used to caculate the encoding rate.
+ *
+ * Example: 2 pages (8KB) being encoded, first page encoding generates 2KB,
+ * 2nd page turns out to be skipped (i.e. no new bytes written to the
+ * page), the overall encoding rate will be 8KB / 2KB = 4, which has the
+ * skipped page included. In this way, the encoding rate can tell if the
+ * guest page is good for xbzrle encoding.
+ */
+ xbzrle_counters.pages++;
prev_cached_page = get_cached_data(XBZRLE.cache, current_addr);
/* save current buffer into memory */
@@ -736,8 +752,12 @@ 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;
- xbzrle_counters.pages++;
- xbzrle_counters.bytes += bytes_xbzrle;
+ /*
+ * Like compressed_size (please see update_compress_thread_counts),
+ * the xbzrle encoded bytes don't count the 8 byte header with
+ * RAM_SAVE_FLAG_CONTINUE.
+ */
+ xbzrle_counters.bytes += bytes_xbzrle - 8;
ram_counters.transferred += bytes_xbzrle;
return 1;
@@ -870,9 +890,23 @@ static void migration_update_rates(RAMState *rs, int64_t end_time)
}
if (migrate_use_xbzrle()) {
+ double encoded_size, unencoded_size;
+
xbzrle_counters.cache_miss_rate = (double)(xbzrle_counters.cache_miss -
rs->xbzrle_cache_miss_prev) / page_count;
rs->xbzrle_cache_miss_prev = xbzrle_counters.cache_miss;
+ unencoded_size = (xbzrle_counters.pages - rs->xbzrle_pages_prev) *
+ TARGET_PAGE_SIZE;
+ encoded_size = xbzrle_counters.bytes - rs->xbzrle_bytes_prev;
+ if (xbzrle_counters.pages == rs->xbzrle_pages_prev) {
+ xbzrle_counters.encoding_rate = 0;
+ } else if (!encoded_size) {
+ xbzrle_counters.encoding_rate = UINT64_MAX;
+ } else {
+ xbzrle_counters.encoding_rate = unencoded_size / encoded_size;
+ }
+ rs->xbzrle_pages_prev = xbzrle_counters.pages;
+ rs->xbzrle_bytes_prev = xbzrle_counters.bytes;
}
if (migrate_use_compression()) {
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 9b94e67..c2a3a66 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -303,6 +303,8 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
info->xbzrle_cache->cache_miss);
monitor_printf(mon, "xbzrle cache miss rate: %0.2f\n",
info->xbzrle_cache->cache_miss_rate);
+ monitor_printf(mon, "xbzrle encoding rate: %0.2f\n",
+ info->xbzrle_cache->encoding_rate);
monitor_printf(mon, "xbzrle overflow: %" PRIu64 "\n",
info->xbzrle_cache->overflow);
}
diff --git a/qapi/migration.json b/qapi/migration.json
index eca2981..358e402 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -70,6 +70,8 @@
#
# @cache-miss-rate: rate of cache miss (since 2.1)
#
+# @encoding-rate: rate of encoded bytes (since 5.1)
+#
# @overflow: number of overflows
#
# Since: 1.2
@@ -77,7 +79,7 @@
{ 'struct': 'XBZRLECacheStats',
'data': {'cache-size': 'int', 'bytes': 'int', 'pages': 'int',
'cache-miss': 'int', 'cache-miss-rate': 'number',
- 'overflow': 'int' } }
+ 'encoding-rate': 'number', 'overflow': 'int' } }
##
# @CompressionStats:
@@ -337,6 +339,7 @@
# "pages":2444343,
# "cache-miss":2244,
# "cache-miss-rate":0.123,
+# "encoding-rate":80.1,
# "overflow":34434
# }
# }
--
1.8.3.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v2] migration/xbzrle: add encoding rate
2020-04-27 8:01 [PATCH v2] migration/xbzrle: add encoding rate Wei Wang
@ 2020-04-28 14:51 ` Dr. David Alan Gilbert
2020-04-29 1:00 ` Wei Wang
0 siblings, 1 reply; 4+ messages in thread
From: Dr. David Alan Gilbert @ 2020-04-28 14:51 UTC (permalink / raw)
To: Wei Wang
Cc: kevin.tian, berrange, quintela, qemu-devel, peterx, gloryxiao, yi.y.sun
* Wei Wang (wei.w.wang@intel.com) wrote:
> Users may need to check the xbzrle encoding rate to know if the guest
> memory is xbzrle encoding-friendly, and dynamically turn off the
> encoding if the encoding rate is low.
>
> Signed-off-by: Yi Sun <yi.y.sun@intel.com>
> Signed-off-by: Wei Wang <wei.w.wang@intel.com>
> ---
> migration/migration.c | 1 +
> migration/ram.c | 38 ++++++++++++++++++++++++++++++++++++--
> monitor/hmp-cmds.c | 2 ++
> qapi/migration.json | 5 ++++-
> 4 files changed, 43 insertions(+), 3 deletions(-)
>
> ChangeLog:
> - include the 3 bytes (ENCODING_FLAG_XBZRLE flag and encoded_len) when
> calculating the encoding rate. Similar to the compress rate
> calculation, the 8 byte RAM_SAVE_FLAG_CONTINUE flag isn't included in
> the calculation.
>
> diff --git a/migration/migration.c b/migration/migration.c
> index 187ac04..e404213 100644
> --- a/migration/migration.c
> +++ b/migration/migration.c
> @@ -930,6 +930,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
> 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->encoding_rate = xbzrle_counters.encoding_rate;
> info->xbzrle_cache->overflow = xbzrle_counters.overflow;
> }
>
> diff --git a/migration/ram.c b/migration/ram.c
> index 04f13fe..f46ab96 100644
> --- a/migration/ram.c
> +++ b/migration/ram.c
> @@ -327,6 +327,10 @@ struct RAMState {
> uint64_t num_dirty_pages_period;
> /* xbzrle misses since the beginning of the period */
> uint64_t xbzrle_cache_miss_prev;
> + /* Amount of xbzrle pages since the beginning of the period */
> + uint64_t xbzrle_pages_prev;
> + /* Amount of xbzrle encoded bytes since the beginning of the period */
> + uint64_t xbzrle_bytes_prev;
>
> /* compression statistics since the beginning of the period */
> /* amount of count that no free thread to compress data */
> @@ -696,6 +700,18 @@ static int save_xbzrle_page(RAMState *rs, uint8_t **current_data,
> return -1;
> }
>
> + /*
> + * Reaching here means the page has hit the xbzrle cache, no matter what
> + * encoding result it is (normal encoding, overflow or skipping the page),
> + * count the page as encoded. This is used to caculate the encoding rate.
> + *
> + * Example: 2 pages (8KB) being encoded, first page encoding generates 2KB,
> + * 2nd page turns out to be skipped (i.e. no new bytes written to the
> + * page), the overall encoding rate will be 8KB / 2KB = 4, which has the
> + * skipped page included. In this way, the encoding rate can tell if the
> + * guest page is good for xbzrle encoding.
> + */
> + xbzrle_counters.pages++;
Can you explain how that works with overflow? Doesn't overflow return
-1 here, not increment the bytes, so it looks like you've xbzrle'd a
page, but the encoding rate hasn't incremented.
Dave
> prev_cached_page = get_cached_data(XBZRLE.cache, current_addr);
>
> /* save current buffer into memory */
> @@ -736,8 +752,12 @@ 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;
> - xbzrle_counters.pages++;
> - xbzrle_counters.bytes += bytes_xbzrle;
> + /*
> + * Like compressed_size (please see update_compress_thread_counts),
> + * the xbzrle encoded bytes don't count the 8 byte header with
> + * RAM_SAVE_FLAG_CONTINUE.
> + */
> + xbzrle_counters.bytes += bytes_xbzrle - 8;
> ram_counters.transferred += bytes_xbzrle;
>
> return 1;
> @@ -870,9 +890,23 @@ static void migration_update_rates(RAMState *rs, int64_t end_time)
> }
>
> if (migrate_use_xbzrle()) {
> + double encoded_size, unencoded_size;
> +
> xbzrle_counters.cache_miss_rate = (double)(xbzrle_counters.cache_miss -
> rs->xbzrle_cache_miss_prev) / page_count;
> rs->xbzrle_cache_miss_prev = xbzrle_counters.cache_miss;
> + unencoded_size = (xbzrle_counters.pages - rs->xbzrle_pages_prev) *
> + TARGET_PAGE_SIZE;
> + encoded_size = xbzrle_counters.bytes - rs->xbzrle_bytes_prev;
> + if (xbzrle_counters.pages == rs->xbzrle_pages_prev) {
> + xbzrle_counters.encoding_rate = 0;
> + } else if (!encoded_size) {
> + xbzrle_counters.encoding_rate = UINT64_MAX;
> + } else {
> + xbzrle_counters.encoding_rate = unencoded_size / encoded_size;
> + }
> + rs->xbzrle_pages_prev = xbzrle_counters.pages;
> + rs->xbzrle_bytes_prev = xbzrle_counters.bytes;
> }
>
> if (migrate_use_compression()) {
> diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
> index 9b94e67..c2a3a66 100644
> --- a/monitor/hmp-cmds.c
> +++ b/monitor/hmp-cmds.c
> @@ -303,6 +303,8 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
> info->xbzrle_cache->cache_miss);
> monitor_printf(mon, "xbzrle cache miss rate: %0.2f\n",
> info->xbzrle_cache->cache_miss_rate);
> + monitor_printf(mon, "xbzrle encoding rate: %0.2f\n",
> + info->xbzrle_cache->encoding_rate);
> monitor_printf(mon, "xbzrle overflow: %" PRIu64 "\n",
> info->xbzrle_cache->overflow);
> }
> diff --git a/qapi/migration.json b/qapi/migration.json
> index eca2981..358e402 100644
> --- a/qapi/migration.json
> +++ b/qapi/migration.json
> @@ -70,6 +70,8 @@
> #
> # @cache-miss-rate: rate of cache miss (since 2.1)
> #
> +# @encoding-rate: rate of encoded bytes (since 5.1)
> +#
> # @overflow: number of overflows
> #
> # Since: 1.2
> @@ -77,7 +79,7 @@
> { 'struct': 'XBZRLECacheStats',
> 'data': {'cache-size': 'int', 'bytes': 'int', 'pages': 'int',
> 'cache-miss': 'int', 'cache-miss-rate': 'number',
> - 'overflow': 'int' } }
> + 'encoding-rate': 'number', 'overflow': 'int' } }
>
> ##
> # @CompressionStats:
> @@ -337,6 +339,7 @@
> # "pages":2444343,
> # "cache-miss":2244,
> # "cache-miss-rate":0.123,
> +# "encoding-rate":80.1,
> # "overflow":34434
> # }
> # }
> --
> 1.8.3.1
>
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] migration/xbzrle: add encoding rate
2020-04-28 14:51 ` Dr. David Alan Gilbert
@ 2020-04-29 1:00 ` Wei Wang
2020-04-29 11:00 ` Dr. David Alan Gilbert
0 siblings, 1 reply; 4+ messages in thread
From: Wei Wang @ 2020-04-29 1:00 UTC (permalink / raw)
To: Dr. David Alan Gilbert
Cc: kevin.tian, berrange, quintela, qemu-devel, peterx, gloryxiao, yi.y.sun
On 04/28/2020 10:51 PM, Dr. David Alan Gilbert wrote:
> * Wei Wang (wei.w.wang@intel.com) wrote:
>> Users may need to check the xbzrle encoding rate to know if the guest
>> memory is xbzrle encoding-friendly, and dynamically turn off the
>> encoding if the encoding rate is low.
>>
>> Signed-off-by: Yi Sun <yi.y.sun@intel.com>
>> Signed-off-by: Wei Wang <wei.w.wang@intel.com>
>> ---
>> migration/migration.c | 1 +
>> migration/ram.c | 38 ++++++++++++++++++++++++++++++++++++--
>> monitor/hmp-cmds.c | 2 ++
>> qapi/migration.json | 5 ++++-
>> 4 files changed, 43 insertions(+), 3 deletions(-)
>>
>> ChangeLog:
>> - include the 3 bytes (ENCODING_FLAG_XBZRLE flag and encoded_len) when
>> calculating the encoding rate. Similar to the compress rate
>> calculation, the 8 byte RAM_SAVE_FLAG_CONTINUE flag isn't included in
>> the calculation.
>>
>> diff --git a/migration/migration.c b/migration/migration.c
>> index 187ac04..e404213 100644
>> --- a/migration/migration.c
>> +++ b/migration/migration.c
>> @@ -930,6 +930,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
>> 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->encoding_rate = xbzrle_counters.encoding_rate;
>> info->xbzrle_cache->overflow = xbzrle_counters.overflow;
>> }
>>
>> diff --git a/migration/ram.c b/migration/ram.c
>> index 04f13fe..f46ab96 100644
>> --- a/migration/ram.c
>> +++ b/migration/ram.c
>> @@ -327,6 +327,10 @@ struct RAMState {
>> uint64_t num_dirty_pages_period;
>> /* xbzrle misses since the beginning of the period */
>> uint64_t xbzrle_cache_miss_prev;
>> + /* Amount of xbzrle pages since the beginning of the period */
>> + uint64_t xbzrle_pages_prev;
>> + /* Amount of xbzrle encoded bytes since the beginning of the period */
>> + uint64_t xbzrle_bytes_prev;
>>
>> /* compression statistics since the beginning of the period */
>> /* amount of count that no free thread to compress data */
>> @@ -696,6 +700,18 @@ static int save_xbzrle_page(RAMState *rs, uint8_t **current_data,
>> return -1;
>> }
>>
>> + /*
>> + * Reaching here means the page has hit the xbzrle cache, no matter what
>> + * encoding result it is (normal encoding, overflow or skipping the page),
>> + * count the page as encoded. This is used to caculate the encoding rate.
>> + *
>> + * Example: 2 pages (8KB) being encoded, first page encoding generates 2KB,
>> + * 2nd page turns out to be skipped (i.e. no new bytes written to the
>> + * page), the overall encoding rate will be 8KB / 2KB = 4, which has the
>> + * skipped page included. In this way, the encoding rate can tell if the
>> + * guest page is good for xbzrle encoding.
>> + */
>> + xbzrle_counters.pages++;
> Can you explain how that works with overflow? Doesn't overflow return
> -1 here, not increment the bytes, so it looks like you've xbzrle'd a
> page, but the encoding rate hasn't incremented.
OK. How about adding below before returning -1 (for the overflow case):
...
xbzrle_counters.bytes += TARGET_PAGE_SIZE;
return -1;
Example: if we have 2 pages encoded as below:
4KB--> after normal encoding: 2KB
4KB--> after overflow: 4KB (will be sent as non-encoded page)
then the encoding rate is 8KB / 6KB = ~1.3
(if we skip the counting of the overflow case,
the encoding rate will be 4KB/ 2KB=2. Users may think that's
good to go with xbzrle, unless they do another calculation with
checking the overflow numbers themselves)
Best,
Wei
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] migration/xbzrle: add encoding rate
2020-04-29 1:00 ` Wei Wang
@ 2020-04-29 11:00 ` Dr. David Alan Gilbert
0 siblings, 0 replies; 4+ messages in thread
From: Dr. David Alan Gilbert @ 2020-04-29 11:00 UTC (permalink / raw)
To: Wei Wang
Cc: kevin.tian, berrange, quintela, qemu-devel, peterx, gloryxiao, yi.y.sun
* Wei Wang (wei.w.wang@intel.com) wrote:
> On 04/28/2020 10:51 PM, Dr. David Alan Gilbert wrote:
> > * Wei Wang (wei.w.wang@intel.com) wrote:
> > > Users may need to check the xbzrle encoding rate to know if the guest
> > > memory is xbzrle encoding-friendly, and dynamically turn off the
> > > encoding if the encoding rate is low.
> > >
> > > Signed-off-by: Yi Sun <yi.y.sun@intel.com>
> > > Signed-off-by: Wei Wang <wei.w.wang@intel.com>
> > > ---
> > > migration/migration.c | 1 +
> > > migration/ram.c | 38 ++++++++++++++++++++++++++++++++++++--
> > > monitor/hmp-cmds.c | 2 ++
> > > qapi/migration.json | 5 ++++-
> > > 4 files changed, 43 insertions(+), 3 deletions(-)
> > >
> > > ChangeLog:
> > > - include the 3 bytes (ENCODING_FLAG_XBZRLE flag and encoded_len) when
> > > calculating the encoding rate. Similar to the compress rate
> > > calculation, the 8 byte RAM_SAVE_FLAG_CONTINUE flag isn't included in
> > > the calculation.
> > >
> > > diff --git a/migration/migration.c b/migration/migration.c
> > > index 187ac04..e404213 100644
> > > --- a/migration/migration.c
> > > +++ b/migration/migration.c
> > > @@ -930,6 +930,7 @@ static void populate_ram_info(MigrationInfo *info, MigrationState *s)
> > > 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->encoding_rate = xbzrle_counters.encoding_rate;
> > > info->xbzrle_cache->overflow = xbzrle_counters.overflow;
> > > }
> > > diff --git a/migration/ram.c b/migration/ram.c
> > > index 04f13fe..f46ab96 100644
> > > --- a/migration/ram.c
> > > +++ b/migration/ram.c
> > > @@ -327,6 +327,10 @@ struct RAMState {
> > > uint64_t num_dirty_pages_period;
> > > /* xbzrle misses since the beginning of the period */
> > > uint64_t xbzrle_cache_miss_prev;
> > > + /* Amount of xbzrle pages since the beginning of the period */
> > > + uint64_t xbzrle_pages_prev;
> > > + /* Amount of xbzrle encoded bytes since the beginning of the period */
> > > + uint64_t xbzrle_bytes_prev;
> > > /* compression statistics since the beginning of the period */
> > > /* amount of count that no free thread to compress data */
> > > @@ -696,6 +700,18 @@ static int save_xbzrle_page(RAMState *rs, uint8_t **current_data,
> > > return -1;
> > > }
> > > + /*
> > > + * Reaching here means the page has hit the xbzrle cache, no matter what
> > > + * encoding result it is (normal encoding, overflow or skipping the page),
> > > + * count the page as encoded. This is used to caculate the encoding rate.
> > > + *
> > > + * Example: 2 pages (8KB) being encoded, first page encoding generates 2KB,
> > > + * 2nd page turns out to be skipped (i.e. no new bytes written to the
> > > + * page), the overall encoding rate will be 8KB / 2KB = 4, which has the
> > > + * skipped page included. In this way, the encoding rate can tell if the
> > > + * guest page is good for xbzrle encoding.
> > > + */
> > > + xbzrle_counters.pages++;
> > Can you explain how that works with overflow? Doesn't overflow return
> > -1 here, not increment the bytes, so it looks like you've xbzrle'd a
> > page, but the encoding rate hasn't incremented.
>
> OK. How about adding below before returning -1 (for the overflow case):
>
> ...
> xbzrle_counters.bytes += TARGET_PAGE_SIZE;
> return -1;
Yes, I think that feels better.
Dave
> Example: if we have 2 pages encoded as below:
> 4KB--> after normal encoding: 2KB
> 4KB--> after overflow: 4KB (will be sent as non-encoded page)
> then the encoding rate is 8KB / 6KB = ~1.3
> (if we skip the counting of the overflow case,
> the encoding rate will be 4KB/ 2KB=2. Users may think that's
> good to go with xbzrle, unless they do another calculation with
> checking the overflow numbers themselves)
>
> Best,
> Wei
>
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-04-29 11:01 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2020-04-27 8:01 [PATCH v2] migration/xbzrle: add encoding rate Wei Wang
2020-04-28 14:51 ` Dr. David Alan Gilbert
2020-04-29 1:00 ` Wei Wang
2020-04-29 11:00 ` Dr. David Alan Gilbert
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