From: Hyman Huang(黄勇)
This patch aims to fix unexpected negotiation features for
vhost-user netdev interface.
When openvswitch reconnect Qemu after an unexpected disconnection
and Qemu therefore start the vhost_dev, acked_features field in
vhost_dev is initialized with value fetched from acked_f
From: Hyman Huang(黄勇)
Abstract vhost acked features saving into
vhost_user_save_acked_features, export it as util function.
Signed-off-by: Hyman Huang(黄勇)
Signed-off-by: Guoyi Tu
---
include/net/vhost-user.h | 1 +
net/vhost-user.c | 21 +++--
2 files changed, 16 inse
From: Hyman Huang(黄勇)
v4:
-rebase on master
-add stub function to fix build errors
-code clean on [PATCH v2 1/2]: drop 'cleanup' parameter in
vhost_user_save_acked_features.
-code clean on [PATCH v2 2/2]: make refactor of chr_closed_bh
a standalone patch.
Above changes are suggested by Michael
From: Hyman Huang(黄勇)
Use vhost_user_save_acked_features to implemente acked features
saving.
Signed-off-by: Hyman Huang(黄勇)
Signed-off-by: Guoyi Tu
---
net/vhost-user.c | 6 +-
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/net/vhost-user.c b/net/vhost-user.c
index f5cb095.
From: Hyman Huang(黄勇)
dirty_rate paraemter of hmp command "set_vcpu_dirty_limit" is invalid
if less than 0, so add parameter check for it.
Signed-off-by: Hyman Huang(黄勇)
---
softmmu/dirtylimit.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/softmmu/dirtylimit.c b/softmmu/dirtylimit.
From: Hyman Huang(黄勇)
v2:
This version make a little bit modifications comparing with
version 1 as following:
1. fix the overflow issue reported by Peter Maydell
2. add parameter check for hmp "set_vcpu_dirty_limit" command
3. fix the racing issue between dirty ring reaper thread and
Qemu mai
From: Hyman Huang(黄勇)
overity points out a overflow problem when computing MB,
dirty_ring_size and TARGET_PAGE_SIZE are both 32 bits,
multiplication will be done as a 32-bit operation, which
could overflow. Simplify the formula.
Meanwhile, fix spelling mistake of variable name.
Reported-by: Pet
From: Hyman Huang(黄勇)
Introduce migration dirty-limit capability, which can
be turned on before live migration and limit dirty
page rate durty live migration.
Introduce migrate_dirty_limit function to help check
if dirty-limit capability enabled during live migration.
Meanwhile, refactor vcpu_d
From: Hyman Huang(黄勇)
Guestperf tool does not cover the dirty-limit migration
currently, support this feature.
To enable dirty-limit, setting x-vcpu-dirty-limit-period
as 500ms and x-vcpu-dirty-limit as 10MB/s:
$ ./tests/migration/guestperf.py \
--dirty-limit --x-vcpu-dirty-limit-period 500
From: Hyman Huang(黄勇)
Add migration dirty-limit capability test if kernel support
dirty ring.
Migration dirty-limit capability introduce dirty limit
capability, two parameters: x-vcpu-dirty-limit-period and
x-vcpu-dirty-limit are introduced to implement the live
migration with dirty limit.
The
From: Hyman Huang(黄勇)
Introduce "x-vcpu-dirty-limit-period" migration experimental
parameter, which is in the range of 1 to 1000ms and used to
make dirtyrate calculation period configurable.
Signed-off-by: Hyman Huang(黄勇)
---
migration/migration.c | 26 ++
monitor/hmp-c
From: Hyman Huang(黄勇)
Introduce "vcpu-dirty-limit" migration parameter used
to limit dirty page rate during live migration.
"vcpu-dirty-limit" and "x-vcpu-dirty-limit-period" are
two dirty-limit-related migration parameters, which can
be set before and during live migration by qmp
migrate-set-pa
From: Hyman Huang(黄勇)
When tested large vcpu size vm with dirtylimit feature, Qemu crashed
due to the assertion in kvm_dirty_ring_reap_one, which assert that
vcpu's kvm_dirty_gfns has been allocated and not NULL.
Because dirty ring reaper thread races with Qemu main thread, reaper
may reap vcpu'
From: Hyman Huang(黄勇)
Guestperf tool does not enable diry ring feature when test
migration by default.
To support dirty ring migration performance test, introduce
dirty-ring-size option into guestperf tools, which ranges in
[1024, 65536].
To set dirty ring size with 4096 during migration test:
From: Hyman Huang(黄勇)
Implement dirty-limit convergence algo for live migration,
which is kind of like auto-converge algo but using dirty-limit
instead of cpu throttle to make migration convergent.
Enable dirty page limit if dirty_rate_high_cnt greater than 2
when dirty-limit capability enabled,
From: Hyman Huang(黄勇)
Export dirty limit throttle time and estimated ring full
time, through which we can observe the process of dirty
limit during live migration.
Signed-off-by: Hyman Huang(黄勇)
---
include/sysemu/dirtylimit.h | 2 ++
migration/migration.c | 10 ++
monitor/hmp-c
From: Hyman Huang(黄勇)
dirty_rate paraemter of hmp command "set_vcpu_dirty_limit" is invalid
if less than 0, so add parameter check for it.
Note that this patch also delete the unsolicited help message and
clean up the code.
Signed-off-by: Hyman Huang(黄勇)
Signed-off-by: Markus Armbruster
Revie
From: Hyman Huang(黄勇)
Implement dirty-limit convergence algo for live migration,
which is kind of like auto-converge algo but using dirty-limit
instead of cpu throttle to make migration convergent.
Enable dirty page limit if dirty_rate_high_cnt greater than 2
when dirty-limit capability enabled,
From: Hyman Huang(黄勇)
Introduce "vcpu-dirty-limit" migration parameter used
to limit dirty page rate during live migration.
"vcpu-dirty-limit" and "x-vcpu-dirty-limit-period" are
two dirty-limit-related migration parameters, which can
be set before and during live migration by qmp
migrate-set-pa
From: Hyman Huang(黄勇)
Introduce migration dirty-limit capability, which can
be turned on before live migration and limit dirty
page rate durty live migration.
Introduce migrate_dirty_limit function to help check
if dirty-limit capability enabled during live migration.
Meanwhile, refactor vcpu_d
From: Hyman Huang(黄勇)
Introduce "x-vcpu-dirty-limit-period" migration experimental
parameter, which is in the range of 1 to 1000ms and used to
make dirtyrate calculation period configurable.
Currently with the "x-vcpu-dirty-limit-period" varies, the
total time of live migration changes, test res
From: Hyman Huang(黄勇)
Add migration dirty-limit capability test if kernel support
dirty ring.
Migration dirty-limit capability introduce dirty limit
capability, two parameters: x-vcpu-dirty-limit-period and
vcpu-dirty-limit are introduced to implement the live
migration with dirty limit.
The te
From: Hyman Huang(黄勇)
v3:
This version make some modifications inspired by Peter and Markus
as following:
1. Do the code clean up in [PATCH v2 02/11] suggested by Markus
2. Replace the [PATCH v2 03/11] with a much simpler patch posted by
Peter to fix the following bug:
https://bugzilla.red
From: Hyman Huang(黄勇)
Coverity points out a overflow problem when computing MB,
dirty_ring_size and TARGET_PAGE_SIZE are both 32 bits,
multiplication will be done as a 32-bit operation, which
could overflow. Simplify the formula.
Meanwhile, fix spelling mistake of variable name.
Reported-by: Pe
From: Hyman Huang(黄勇)
Export dirty limit throttle time and estimated ring full
time, through which we can observe if dirty limit take
effect during live migration.
Signed-off-by: Hyman Huang(黄勇)
---
include/sysemu/dirtylimit.h | 2 ++
migration/migration.c | 10 ++
monitor/hmp-c
From: Peter Xu
It's possible that we want to reap a dirty ring on a vcpu that is during
creation, because the vcpu is put onto list (CPU_FOREACH visible) before
initialization of the structures. In this case:
qemu_init_vcpu
x86_cpu_realizefn
cpu_exec_realizefn
cpu_list_a
From: Hyman Huang(黄勇)
Check if block migration is running before throttling
guest down in auto-converge way.
Note that this modification is kind of like code clean,
because block migration does not depend on auto-converge
capability, so the order of checks can be adjusted.
Signed-off-by: Hyman
From: Hyman Huang(黄勇)
Introduce "x-vcpu-dirty-limit-period" migration experimental
parameter, which is in the range of 1 to 1000ms and used to
make dirtyrate calculation period configurable.
Currently with the "x-vcpu-dirty-limit-period" varies, the
total time of live migration changes, test res
From: Hyman Huang(黄勇)
Implement dirty-limit convergence algo for live migration,
which is kind of like auto-converge algo but using dirty-limit
instead of cpu throttle to make migration convergent.
Enable dirty page limit if dirty_rate_high_cnt greater than 2
when dirty-limit capability enabled,
From: Hyman Huang(黄勇)
Introduce "vcpu-dirty-limit" migration parameter used
to limit dirty page rate during live migration.
"vcpu-dirty-limit" and "x-vcpu-dirty-limit-period" are
two dirty-limit-related migration parameters, which can
be set before and during live migration by qmp
migrate-set-pa
From: Peter Xu
It's possible that we want to reap a dirty ring on a vcpu that is during
creation, because the vcpu is put onto list (CPU_FOREACH visible) before
initialization of the structures. In this case:
qemu_init_vcpu
x86_cpu_realizefn
cpu_exec_realizefn
cpu_list_a
From: Hyman Huang(黄勇)
Check if block migration is running before throttling
guest down in auto-converge way.
Note that this modification is kind of like code clean,
because block migration does not depend on auto-converge
capability, so the order of checks can be adjusted.
Signed-off-by: Hyman
From: Hyman Huang(黄勇)
Add migration dirty-limit capability test if kernel support
dirty ring.
Migration dirty-limit capability introduce dirty limit
capability, two parameters: x-vcpu-dirty-limit-period and
vcpu-dirty-limit are introduced to implement the live
migration with dirty limit.
The te
From: Hyman Huang(黄勇)
v3(resend):
- fix the syntax error of the topic.
v3:
This version make some modifications inspired by Peter and Markus
as following:
1. Do the code clean up in [PATCH v2 02/11] suggested by Markus
2. Replace the [PATCH v2 03/11] with a much simpler patch posted by
Peter
From: Hyman Huang(黄勇)
Coverity points out a overflow problem when computing MB,
dirty_ring_size and TARGET_PAGE_SIZE are both 32 bits,
multiplication will be done as a 32-bit operation, which
could overflow. Simplify the formula.
Meanwhile, fix spelling mistake of variable name.
Reported-by: Pe
From: Hyman Huang(黄勇)
Export dirty limit throttle time and estimated ring full
time, through which we can observe if dirty limit take
effect during live migration.
Signed-off-by: Hyman Huang(黄勇)
---
include/sysemu/dirtylimit.h | 2 ++
migration/migration.c | 10 ++
monitor/hmp-c
From: Hyman Huang(黄勇)
Introduce migration dirty-limit capability, which can
be turned on before live migration and limit dirty
page rate durty live migration.
Introduce migrate_dirty_limit function to help check
if dirty-limit capability enabled during live migration.
Meanwhile, refactor vcpu_d
From: Hyman Huang(黄勇)
dirty_rate paraemter of hmp command "set_vcpu_dirty_limit" is invalid
if less than 0, so add parameter check for it.
Note that this patch also delete the unsolicited help message and
clean up the code.
Signed-off-by: Hyman Huang(黄勇)
Signed-off-by: Markus Armbruster
Revie
From: Hyman Huang(黄勇)
Abstract
This series added a new migration capability called "dirtylimit". It can
be enabled when dirty ring is enabled, and it'll improve the vCPU performance
during the process of migration. It is based on the previous patchset:
https://lore.kernel.org/qemu-deve
From: Hyman Huang(黄勇)
Introduce "vcpu-dirty-limit" migration parameter used
to limit dirty page rate during live migration.
"vcpu-dirty-limit" and "x-vcpu-dirty-limit-period" are
two dirty-limit-related migration parameters, which can
be set before and during live migration by qmp
migrate-set-pa
From: Hyman Huang(黄勇)
Guestperf tool does not enable diry ring feature when test
migration by default.
To support dirty ring migration performance test, introduce
dirty-ring-size option into guestperf tools, which ranges in
[1024, 65536].
To set dirty ring size with 4096 during migration test:
From: Hyman Huang(黄勇)
Implement dirty-limit convergence algo for live migration,
which is kind of like auto-converge algo but using dirty-limit
instead of cpu throttle to make migration convergent.
Signed-off-by: Hyman Huang(黄勇)
---
migration/ram.c| 53 +
From: Hyman Huang(黄勇)
Introduce "x-vcpu-dirty-limit-period" migration experimental
parameter, which is used to make dirtyrate calculation period
configurable.
Signed-off-by: Hyman Huang(黄勇)
---
migration/migration.c | 16
monitor/hmp-cmds.c| 8
qapi/migration.jso
From: Hyman Huang(黄勇)
Introduce migration dirty-limit capability, which can
be turned on before live migration and limit dirty
page rate durty live migration.
Introduce migrate_dirty_limit function to help check
if dirty-limit capability enabled during live migration.
Meanwhile, refactor vcpu_d
From: Hyman Huang(黄勇)
Export dirty limit throttle time and estimated ring full
time, through which we can observe the process of dirty
limit during live migration.
Signed-off-by: Hyman Huang(黄勇)
---
include/sysemu/dirtylimit.h | 2 ++
migration/migration.c | 10 ++
monitor/hmp-c
From: Hyman Huang(黄勇)
Add migration dirty-limit capability test if kernel support
dirty ring.
Migration dirty-limit capability introduce dirty limit
capability, two parameters: x-vcpu-dirty-limit-period and
vcpu-dirty-limit are introduced to implement the live
migration with dirty limit.
The te
From: Hyman Huang(黄勇)
Guestperf tool does not cover the dirty-limit migration
currently, support this feature.
To enable dirty-limit, setting x-vcpu-dirty-limit-period
as 500ms and vcpu-dirty-limit as 10MB/s:
$ ./tests/migration/guestperf.py \
--dirty-limit --x-vcpu-dirty-limit-period 500 \
From: Hyman Huang(黄勇)
Coverity points out a overflow problem when computing MB,
dirty_ring_size and TARGET_PAGE_SIZE are both 32 bits,
multiplication will be done as a 32-bit operation, which
could overflow. Simplify the formula.
Meanwhile, fix spelling mistake of variable name.
Reported-by: Pe
From: Hyman Huang(黄勇)
Coverity points out a overflow problem when computing MB,
dirty_ring_size and TARGET_PAGE_SIZE are both 32 bits,
multiplication will be done as a 32-bit operation, which
could overflow. Simplify the formula.
Meanwhile, fix spelling mistake of variable name.
Reported-by: Pe
From: Hyman Huang(黄勇)
introduce the third method GLOBAL_DIRTY_RESTRAINT of dirty
tracking for calculate dirtyrate periodly for dirty restraint.
implement thread for calculate dirtyrate periodly, which will
be used for dirty restraint.
add dirtyrestraint.h to introduce the util function for dirt
From: Hyman Huang(黄勇)
implement dirty restraint by kicking each vcpu as the
auto-converge does during migration, but just kick the
specified vcpu instead, not all the vcpu of vm.
start a thread to track the dirty restraint status
and adjuct the throttle pencentage dynamically depend
on current a
From: Hyman Huang(黄勇)
this patchset introduce a mechanism to impose dirty restraint
on vCPU, aiming to keep the vCPU running in a certain dirtyrate
given by user. dirty restraint on vCPU maybe an alternative
method to implement convergence logic for live migration,
which could improve guest memor
From: Hyman Huang(黄勇)
implement dirtyrate calculation periodically basing on dirty-ring
and throttle vCPU until it reachs the quota dirtyrate given by user.
introduce qmp commands dirty-restraint/dirty-restraint-cancel to
impose/cancel dirty restraint on vCPU
Signed-off-by: Hyman Huang(黄勇)
---
From: Hyman Huang(黄勇)
implement dirtyrate calculation periodically basing on
dirty-ring and throttle vCPU until it reachs the quota
dirtyrate given by user.
introduce qmp commands set-dirty-limit/cancel-dirty-limit to
set/cancel dirty limit on vCPU.
Signed-off-by: Hyman Huang(黄勇)
---
cpus-com
From: Hyman Huang(黄勇)
impose dirty restraint on vCPU by kicking it and sleep
as the auto-converge does during migration, but just
kick the specified vCPU instead, not all vCPUs of vm.
start a thread to track the dirtylimit status and adjust
the throttle pencentage dynamically depend on current
a
From: Hyman Huang(黄勇)
introduce the third method GLOBAL_DIRTY_RESTRAINT of dirty
tracking for calculate dirtyrate periodly for dirty restraint.
implement thread for calculate dirtyrate periodly, which will
be used for dirty restraint.
add dirtylimit.h to introduce the util function for dirty
li
From: Hyman Huang(黄勇)
v2:
- rebase on master
- modify the following points according to the advices given by Juan
1. rename dirtyrestraint to dirtylimit
2. implement the full lifecyle function of dirtylimit_calc, include
dirtylimit_calc and dirtylimit_calc_quit
3. introduce 'quit' fiel
From: Hyman Huang(黄勇)
v3:
- rebase on master
- modify the following points according to the advice given by Markus
1. remove the DirtyRateQuotaVcpu and use its field as option directly
2. add comments to show details of what dirtylimit setup do
3. explain how to use dirtylimit in combinatio
From: Hyman Huang(黄勇)
implement dirtyrate calculation periodically basing on
dirty-ring and throttle vCPU until it reachs the quota
dirtyrate given by user.
introduce qmp commands set-dirty-limit/cancel-dirty-limit to
set/cancel dirty limit on vCPU.
Signed-off-by: Hyman Huang(黄勇)
---
cpus-com
From: Hyman Huang(黄勇)
impose dirty restraint on vCPU by kicking it and sleep
as the auto-converge does during migration, but just
kick the specified vCPU instead, not all vCPUs of vm.
start a thread to track the dirtylimit status and adjust
the throttle pencentage dynamically depend on current
a
From: Hyman Huang(黄勇)
introduce the third method GLOBAL_DIRTY_RESTRAINT of dirty
tracking for calculate dirtyrate periodly for dirty restraint.
implement thread for calculate dirtyrate periodly, which will
be used for dirty restraint.
add dirtylimit.h to introduce the util function for dirty
li
From: Hyman Huang(黄勇)
Introduce the third method GLOBAL_DIRTY_LIMIT of dirty
tracking for calculate dirtyrate periodly for dirty restraint.
Implement thread for calculate dirtyrate periodly, which will
be used for dirty restraint.
Add dirtylimit.h to introduce the util function for dirty
limit
From: Hyman Huang(黄勇)
Impose dirty restraint on vCPU by kicking it and sleep
as the auto-converge does during migration, but just
kick the specified vCPU instead, not all vCPUs of vm.
Start a thread to track the dirtylimit status and adjust
the throttle pencentage dynamically depend on current
a
From: Hyman Huang(黄勇)
Implement dirtyrate calculation periodically basing on
dirty-ring and throttle vCPU until it reachs the quota
dirtyrate given by user.
Introduce qmp commands set-dirty-limit/cancel-dirty-limit to
set/cancel dirty limit on vCPU.
Signed-off-by: Hyman Huang(黄勇)
---
cpus-com
From: Hyman Huang(黄勇)
v4:
- rebase on master
- modify the following points according to the advice given by Markus
1. move the defination into migration.json
2. polish the comments of set-dirty-limit
3. do the syntax check and change dirty rate to dirty page rate
Thanks for the carefule re
From: Hyman Huang(黄勇)
Introduce the third method GLOBAL_DIRTY_LIMIT of dirty
tracking for calculate dirtyrate periodly for dirty restraint.
Implement thread for calculate dirtyrate periodly, which will
be used for dirty restraint.
Add dirtylimit.h to introduce the util function for dirty
limit
From: Hyman Huang(黄勇)
v5:
- rebase on master
- adjust the throttle algorithm by removing the tuning in
RESTRAINT_RATIO case so that dirty page rate could reachs the quota
more quickly.
- fix percentage update in throttle iteration.
v4:
- rebase on master
- modify the following points accord
From: Hyman Huang(黄勇)
Implement dirtyrate calculation periodically basing on
dirty-ring and throttle vCPU until it reachs the quota
dirtyrate given by user.
Introduce qmp commands set-dirty-limit/cancel-dirty-limit to
set/cancel dirty limit on vCPU.
Signed-off-by: Hyman Huang(黄勇)
---
cpus-com
From: Hyman Huang(黄勇)
Impose dirty restraint on vCPU by kicking it and sleep
as the auto-converge does during migration, but just
kick the specified vCPU instead, not all vCPUs of vm.
Start a thread to track the dirtylimit status and adjust
the throttle pencentage dynamically depend on current
a
From: Hyman Huang(黄勇)
v6:
- rebase on master
- fix dirtylimit setup crash found by Markus
- polish the comments according to the advice given by Markus
- adjust the qemu qmp command tag to 7.0
v5:
- rebase on master
- adjust the throttle algorithm by removing the tuning in
RESTRAINT_RATIO cas
From: Hyman Huang(黄勇)
Impose dirty restraint on vCPU by kicking it and sleep
as the auto-converge does during migration, but just
kick the specified vCPU instead, not all vCPUs of vm.
Start a thread to track the dirtylimit status and adjust
the throttle pencentage dynamically depend on current
a
From: Hyman Huang(黄勇)
Implement dirtyrate calculation periodically basing on
dirty-ring and throttle vCPU until it reachs the quota
dirty page rate given by user.
Introduce qmp commands set-dirty-limit/cancel-dirty-limit to
set/cancel dirty page limit on vCPU.
Signed-off-by: Hyman Huang(黄勇)
--
From: Hyman Huang(黄勇)
Introduce the third method GLOBAL_DIRTY_LIMIT of dirty
tracking for calculate dirtyrate periodly.
Implement thread for calculating dirtyrate periodly, which will
be used for for vCPU throttle implementation.
Add dirtylimit.h to introduce the util function for dirty page li
From: Hyman Huang(黄勇)
v25:
- rebase master
- fix 32-bit and non-Linux(freebsd) build failures
use qatomic_read_i64() to replace qatomic_read()
move the DIRTYLIMIT_TOLERANCE_RANGE MARCO out of 'linux' scope.
Please review, thanks !
Yong.
v24:
- add "Acked-by: Peter Xu " tag in (PATCH [8/8])
From: Hyman Huang(黄勇)
Add a non-required argument 'CPUState' to kvm_dirty_ring_reap so
that it can cover single vcpu dirty-ring-reaping scenario.
Signed-off-by: Hyman Huang(黄勇)
Reviewed-by: Peter Xu
---
accel/kvm/kvm-all.c | 23 +--
1 file changed, 13 insertions(+), 10 del
From: Hyman Huang(黄勇)
Introduce kvm_dirty_ring_size util function to help calculate
dirty ring ful time.
Signed-off-by: Hyman Huang(黄勇)
Acked-by: Peter Xu
---
accel/kvm/kvm-all.c| 5 +
accel/stubs/kvm-stub.c | 5 +
include/sysemu/kvm.h | 2 ++
3 files changed, 12 insertions(+)
From: Hyman Huang(黄勇)
Introduce cpu_list_generation_id to track cpu list generation so
that cpu hotplug/unplug can be detected during measurement of
dirty page rate.
cpu_list_generation_id could be used to detect changes of cpu
list, which is prepared for dirty page rate measurement.
Signed-off
From: Hyman Huang(黄勇)
abstract out dirty log change logic into function
global_dirty_log_change.
abstract out dirty page rate calculation logic via
dirty-ring into function vcpu_calculate_dirtyrate.
abstract out mathematical dirty page rate calculation
into do_calculate_dirtyrate, decouple it f
From: Hyman Huang(黄勇)
Introduce the third method GLOBAL_DIRTY_LIMIT of dirty
tracking for calculate dirtyrate periodly for dirty page
rate limit.
Add dirtylimit.c to implement dirtyrate calculation periodly,
which will be used for dirty page rate limit.
Add dirtylimit.h to export util functions
From: Hyman Huang(黄勇)
Implement dirtyrate calculation periodically basing on
dirty-ring and throttle virtual CPU until it reachs the quota
dirty page rate given by user.
Introduce qmp commands "set-vcpu-dirty-limit",
"cancel-vcpu-dirty-limit", "query-vcpu-dirty-limit"
to enable, disable, query d
From: Hyman Huang(黄勇)
Add dirty page rate limit test if kernel support dirty ring,
The following qmp commands are covered by this test case:
"calc-dirty-rate", "query-dirty-rate", "set-vcpu-dirty-limit",
"cancel-vcpu-dirty-limit" and "query-vcpu-dirty-limit".
Signed-off-by: Hyman Huang(黄勇)
Ack
From: Hyman Huang(黄勇)
Setup a negative feedback system when vCPU thread
handling KVM_EXIT_DIRTY_RING_FULL exit by introducing
throttle_us_per_full field in struct CPUState. Sleep
throttle_us_per_full microseconds to throttle vCPU
if dirtylimit is in service.
Signed-off-by: Hyman Huang(黄勇)
Revie
From: Hyman Huang(黄勇)
Introduce cpu_list_generation_id to track cpu list generation so
that cpu hotplug/unplug can be detected during measurement of
dirty page rate.
cpu_list_generation_id could be used to detect changes of cpu
list, which is prepared for dirty page rate measurement.
Signed-off
From: Hyman Huang(黄勇)
abstract out dirty log change logic into function
global_dirty_log_change.
abstract out dirty page rate calculation logic via
dirty-ring into function vcpu_calculate_dirtyrate.
abstract out mathematical dirty page rate calculation
into do_calculate_dirtyrate, decouple it f
From: Hyman Huang(黄勇)
Setup a negative feedback system when vCPU thread
handling KVM_EXIT_DIRTY_RING_FULL exit by introducing
throttle_us_per_full field in struct CPUState. Sleep
throttle_us_per_full microseconds to throttle vCPU
if dirtylimit is in service.
Signed-off-by: Hyman Huang(黄勇)
Revie
From: Hyman Huang(黄勇)
v17
- rebase on master
- fix qmp-cmd-test
v16
- rebase on master
- drop the unused typedef syntax in [PATCH v15 6/7]
- add the Reviewed-by and Acked-by tags by the way
v15
- rebase on master
- drop the 'init_time_ms' parameter in function vcpu_calculate_dirtyrate
- dro
From: Hyman Huang(黄勇)
Introduce the third method GLOBAL_DIRTY_LIMIT of dirty
tracking for calculate dirtyrate periodly for dirty page
rate limit.
Add dirtylimit.c to implement dirtyrate calculation periodly,
which will be used for dirty page rate limit.
Add dirtylimit.h to export util functions
From: Hyman Huang(黄勇)
Implement dirtyrate calculation periodically basing on
dirty-ring and throttle virtual CPU until it reachs the quota
dirty page rate given by user.
Introduce qmp commands "set-vcpu-dirty-limit",
"cancel-vcpu-dirty-limit", "query-vcpu-dirty-limit"
to enable, disable, query d
From: Hyman Huang(黄勇)
query-vcpu-dirty-limit success depends on enabling dirty
page rate limit, so just add it to the list of skipped
command to ensure qmp-cmd-test run successfully.
Signed-off-by: Hyman Huang(黄勇)
Reported-by: Dr. David Alan Gilbert
---
tests/qtest/qmp-cmd-test.c | 2 ++
1 fi
From: Hyman Huang(黄勇)
Add a non-required argument 'CPUState' to kvm_dirty_ring_reap so
that it can cover single vcpu dirty-ring-reaping scenario.
Signed-off-by: Hyman Huang(黄勇)
Reviewed-by: Peter Xu
---
accel/kvm/kvm-all.c | 23 +--
1 file changed, 13 insertions(+), 10 del
From: Hyman Huang(黄勇)
Introduce kvm_dirty_ring_size util function to help calculate
dirty ring ful time.
Signed-off-by: Hyman Huang(黄勇)
Acked-by: Peter Xu
---
accel/kvm/kvm-all.c| 5 +
accel/stubs/kvm-stub.c | 5 +
include/sysemu/kvm.h | 2 ++
3 files changed, 12 insertions(+)
From: Hyman Huang(黄勇)
Add a non-required argument 'CPUState' to kvm_dirty_ring_reap so
that it can cover single vcpu dirty-ring-reaping scenario.
Signed-off-by: Hyman Huang(黄勇)
Reviewed-by: Peter Xu
---
accel/kvm/kvm-all.c | 23 +--
1 file changed, 13 insertions(+), 10 del
From: Hyman Huang(黄勇)
Introduce cpu_list_generation_id to track cpu list generation so
that cpu hotplug/unplug can be detected during measurement of
dirty page rate.
cpu_list_generation_id could be used to detect changes of cpu
list, which is prepared for dirty page rate measurement.
Signed-off
From: Hyman Huang(黄勇)
abstract out dirty log change logic into function
global_dirty_log_change.
abstract out dirty page rate calculation logic via
dirty-ring into function vcpu_calculate_dirtyrate.
abstract out mathematical dirty page rate calculation
into do_calculate_dirtyrate, decouple it f
From: Hyman Huang(黄勇)
Implement dirtyrate calculation periodically basing on
dirty-ring and throttle virtual CPU until it reachs the quota
dirty page rate given by user.
Introduce qmp commands "set-vcpu-dirty-limit",
"cancel-vcpu-dirty-limit", "query-vcpu-dirty-limit"
to enable, disable, query d
From: Hyman Huang(黄勇)
v18
- squash commit "Ignore query-vcpu-dirty-limit test" into
"Implement dirty page rate limit" in [PATCH v17] to make
the modification logic self-contained.
Please review. Thanks,
Regards
Yong
v17
- rebase on master
- fix qmp-cmd-test
v16
- rebase on master
- dr
From: Hyman Huang(黄勇)
Introduce kvm_dirty_ring_size util function to help calculate
dirty ring ful time.
Signed-off-by: Hyman Huang(黄勇)
Acked-by: Peter Xu
---
accel/kvm/kvm-all.c| 5 +
accel/stubs/kvm-stub.c | 5 +
include/sysemu/kvm.h | 2 ++
3 files changed, 12 insertions(+)
From: Hyman Huang(黄勇)
Introduce the third method GLOBAL_DIRTY_LIMIT of dirty
tracking for calculate dirtyrate periodly for dirty page
rate limit.
Add dirtylimit.c to implement dirtyrate calculation periodly,
which will be used for dirty page rate limit.
Add dirtylimit.h to export util functions
From: Hyman Huang(黄勇)
Setup a negative feedback system when vCPU thread
handling KVM_EXIT_DIRTY_RING_FULL exit by introducing
throttle_us_per_full field in struct CPUState. Sleep
throttle_us_per_full microseconds to throttle vCPU
if dirtylimit is in service.
Signed-off-by: Hyman Huang(黄勇)
Revie
From: Hyman Huang(黄勇)
Dirtylimit implementation has been reviewed in the past few months, if
things go well, it will be merged in the near future, which is the first
step to implement a new live migration feature. For more details refer to:
https://lore.kernel.org/qemu-devel/cover.1646247968.git
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