From: Hyman Huang(黄勇)
Signed-off-by: Hyman Huang(黄勇)
---
migration/migration.c | 19 +++
migration/migration.h | 1 +
migration/ram.c | 24
qapi/migration.json | 36 +++-
4 files changed, 75 insertions(+), 5 delet
From: Hyman Huang(黄勇)
v1:
-original version sent by accident, send the right patch
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 refe
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)
v12
- rebase on master
- add a new commmit to refactor per-vcpu dirty ring reaping, which can resolve
the "vcpu miss the chances to sleep" problem
- remove the dirtylimit_thread and implemtment throttle in bottom half instead.
- let the dirty ring reaper thread keep sleep
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 enabled.
Start a thread to track current dirty pa
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)
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)
Add a non-required argument 'CPUState' to kvm_dirty_ring_reap so
that it can cover single vcpu dirty ring reaping scenario.
Only just reaping the target vcpu dirty ring instead of all when
vcpu thread return to user space caused by KVM_EXIT_DIRTY_RING_FULL.
Signed-off-by:
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)
The last modification of the patchset may be 2 month before
merging dirtyrate implementation, it used the wrong tag, so
fix with 6.2.
Signed-off-by: Hyman Huang(黄勇)
---
qapi/migration.json | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/qapi
From: Hyman Huang(黄勇)
commit f78d4ed701 has fixed qemu tag, making 'sample-pages' option tag
involved by accident, which introduced since 6.1 in commit 7afa08cd8fd.
revert this line.
Signed-off-by: Hyman Huang(黄勇)
---
qapi/migration.json | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
d
From: Hyman Huang(黄勇)
Introduce migration dirtylimit capability, which can
be turned on before live migration and limit dirty
page rate durty live migration.
Dirtylimit dirtylimit capability is kind of like
auto-converge but using dirtylimit instead of traditional
cpu-throttle to throttle guest
From: Hyman Huang(黄勇)
Implement dirtylimit convergence algo for live migration,
which is kind of like auto-converge algo but using dirtylimit
instead of cpu throttle to make migration convergent.
Signed-off-by: Hyman Huang(黄勇)
---
migration/ram.c| 53 +++
From: Hyman Huang(黄勇)
Add dirtylimit throttle data into migration info, through
which we can observe the process of dirtylimit during
live migration.
Signed-off-by: Hyman Huang(黄勇)
---
include/sysemu/dirtylimit.h | 2 ++
migration/migration.c | 10 ++
qapi/migration.json
From: Hyman Huang(黄勇)
Introduce "vcpu-dirtylimit-period" migration parameters,
which is used to makes dirtyrate calculation period
configurable.
To implement that, refactor vcpu_dirty_rate_stat_collect
so that period can be configured instead of hardcode.
Meanwhile, introduce migrate_dirtylimit
From: Hyman Huang(黄勇)
Introduce "vcpu-dirtylimit" migration parameter used
to limit dirty page rate during live migration.
"vcpu-dirtylimit" and "vcpu-dirtylimit-period" are
two dirtylimit-related migration parameters, which can
be set before and during live migration by qmp
migrate-set-paramete
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)
Add migration dirtylimit capability test if kernel support
dirty ring.
Migration dirtylimit capability introduce dirtylimit capability
, two parameters: vcpu-dirtylimit-period and vcpu-dirtylimit to
implement the live migration with dirtylimit.
The test case enable the cap
From: Hyman Huang(黄勇)
This is v23 of dirtylimit series. Since v22 posted abount 1 month ago,
i did some modifications to make sure it's ready to be queued:
- rebased the master and changed the qapi version tag from 7.0 to 7.1
- do not set error if when query_vcpu_dirty_limit find dirtylimit not
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)
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)
Add dirty page rate limit test if kernel support dirty ring,
create a standalone file to implement the test case.
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-vc
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 | 6 ++
include/sysemu/kvm.h | 2 ++
3 files changed, 13 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)
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)
v24:
- add "Acked-by: Peter Xu " tag in (PATCH [8/8])
v23:
This is v23 of dirtylimit series. Since v22 posted abount 1 month ago,
i did some modifications to make sure it's ready to be queued:
- rebased the master and changed the qapi version tag from 7.0 to 7.1
- do not
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)
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)
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 | 6 ++
include/sysemu/kvm.h | 2 ++
3 files changed, 13 insertions(+)
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)
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)
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)
v11
- rebase on master
- add a commit " refactor dirty page rate calculation" so that dirty page rate
limit
can reuse the calculation logic.
- handle the cpu hotplug/unplug case in the dirty page rate calculation logic.
- modify the qmp commands according to Markus's ad
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 enabled.
Start a thread to track current dirty pa
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)
v14
- v13 sent by accident, resend patchset.
v13
- rebase on master
- passing NULL to kvm_dirty_ring_reap in commit
"refactor per-vcpu dirty ring reaping" to keep the logic unchanged.
In other word, we still try the best to reap as much PFNs as possible
if dirtylimit
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)
v13
- rebase on master
- passing NULL to kvm_dirty_ring_reap in commit
"refactor per-vcpu dirty ring reaping" to keep the logic unchanged.
In other word, we still try the best to reap as much PFNs as possible
if dirtylimit not in service.
- move the cpu list gen id cha
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.
Signed-off-by: Hyman Huang(黄勇)
---
cpus-common.c | 8
include/exec/cpu-common.h | 1 +
2 files changed, 9 i
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)
---
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 kvm_dirty_ring_size util function to help calculate
dirty ring ful time.
Signed-off-by: Hyman Huang(黄勇)
---
accel/kvm/kvm-all.c| 5 +
accel/stubs/kvm-stub.c | 5 +
include/sysemu/kvm.h | 2 ++
3 files changed, 12 insertions(+)
diff --git a/accel/k
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)
---
accel/kvm/kvm-all.c | 23 +--
1 file changed, 13 insertions(+), 10 deletions(-)
diff --git a
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)
---
accel/kvm/kvm-all.c | 23 +--
1 file changed, 13 insertions(+), 10 deletions(-)
diff --git a
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.
Signed-off-by: Hyman Huang(黄勇)
---
cpus-common.c | 8
include/exec/cpu-common.h | 1 +
2 files changed, 9 i
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)
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)
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)
---
accel/kvm/kvm-all.c | 23 +--
1 file changed, 13 insertions(+), 10 deletions(-)
diff --git a
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)
Introduce kvm_dirty_ring_size util function to help calculate
dirty ring ful time.
Signed-off-by: Hyman Huang(黄勇)
---
accel/kvm/kvm-all.c| 5 +
accel/stubs/kvm-stub.c | 5 +
include/sysemu/kvm.h | 2 ++
3 files changed, 12 insertions(+)
diff --git a/accel/k
From: Hyman Huang(黄勇)
v15
- rebase on master
- drop the 'init_time_ms' parameter in function vcpu_calculate_dirtyrate
- drop the 'setup' field in dirtylimit_state and call dirtylimit_process
directly, which makes code cleaner.
- code clean in dirtylimit_adjust_throttle
- fix miss dirtylimit_st
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)
---
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)
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
- drop the 'setup' field in dirtylimit_state and
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)
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 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)
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)
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)
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" migration parameter used
to limit dirty page rate during live migration.
"x-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-se
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)
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)
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/migration.c | 1 +
migration/ram.c| 53 ++
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)
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)
v1:
- make parameter vcpu-dirty-limit experimental
- switch dirty limit off when cancel migrate
- add cancel logic in migration test
Please review, thanks,
Yong
Abstract
This series added a new migration capability called "dirtylimit". It can
be enabled when
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)
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)
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)
v4:
1. Polish the docs and update the release version suggested by Markus
2. Rename the migrate exported info "dirty-limit-throttle-time-per-round"
to "dirty-limit-throttle-time-per-full".
The following 5 commits hasn't been acked or reviewed yet:
kvm: dirty-ring: Fix
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)
Extend query-migrate to provide throttle time and estimated
ring full time with dirty-limit capability enabled, through which
we can observe if dirty limit take effect during live migration.
Signed-off-by: Hyman Huang(黄勇)
Signed-off-by: Markus Armbruster
---
include/syse
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)
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)
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 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)
This series is enlightened by Michael when we fixed a virtio features
negotiation flaw, see the details here:
https://lore.kernel.org/qemu-devel/cover.1667136717.git.huang...@chinatelecom.cn/
And a test is suggested to be added to test behavior of virtio-net features
negoti
From: Hyman Huang(黄勇)
For vhost-user network device, Qemu backup the final features as
acked_features internally after guest acknowledging features during
virtio-net driver initialization, so the acked_features could be
used as input of VHOST_USER_SET_FEATURES command when slave device
restore fr
From: Hyman Huang(黄勇)
Add netdev information into output of hmp command hmp_info_network
so developers can analyze interface capability more easily.
Signed-off-by: Hyman Huang(黄勇)
---
net/net.c | 15 +++
1 file changed, 15 insertions(+)
diff --git a/net/net.c b/net/net.c
index c27
From: Hyman Huang(黄勇)
For netdev device that can offload virtio-net dataplane to slave,
such as vhost-net, vhost-user and vhost-vdpa, exporting it's
capability information and acked features would be more friendly for
developers. These infomation can be analyzed and compare to slave
capability pr
From: Hyman Huang(黄勇)
Introduce "info netdev" command so developers can play with
it easier.
Signed-off-by: Hyman Huang(黄勇)
---
hmp-commands-info.hx | 14 ++
include/monitor/hmp.h | 1 +
net/net.c | 31 +++
3 files changed, 46 insertions(+)
From: Hyman Huang(黄勇)
Save the acked_features once it be configured by guest
virtio driver so it can't miss any features.
Signed-off-by: Hyman Huang(黄勇)
Signed-off-by: Guoyi Tu
---
hw/net/vhost_net.c | 9 +
hw/net/virtio-net.c | 5 +
include/net/vhost_net.h | 2 ++
3 file
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 | 2 ++
net/vhost-user.c | 35 +++
2 files c
From: "Hyman Huang(黄勇)"
This patchset aim to fix the unexpected negotiation features for
vhost-user netdev interface.
Steps to reproduce the issue:
Prepare a vm (CentOS 8 in my work scenario) with vhost-user
backend interface and configure qemu as server mode. So dpdk
would connect qemu's unix
From: Hyman Huang(黄勇)
Save the acked_features once it be configured by guest
virtio driver so it can't miss any features.
Signed-off-by: Hyman Huang(黄勇)
Signed-off-by: Guoyi Tu
---
hw/net/vhost_net.c | 9 +
hw/net/virtio-net.c | 5 +
include/net/vhost_net.h | 2 ++
3 file
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 | 2 ++
net/vhost-user.c | 35 +++
2 files c
From: Hyman Huang(黄勇)
v1:
This is the version 1 of the series and it is exactly the same as
RFC version, but fixing a typo in subject, which is reported by Michael.
As for test for the behavior suggested by Michael, IMHO, it could be
post in another series, since i found that testing the negoti
From: Hyman Huang(黄勇)
v2:
Fix the typo in subject of [PATCH v2 2/2]
v1:
This is the version 1 of the series and it is exactly the same as
RFC version, but fixing a typo in subject, which is reported by Michael.
As for test for the behavior suggested by Michael, IMHO, it could be
post in anoth
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