Sample output:
```
➜ grpc git:(otel-metrics-benchmark) ✗ bazel-bin/test/cpp/microbenchmarks/bm_stats_plugin
WARNING: All log messages before absl::InitializeLog() is called are written to STDERR
I0000 00:00:1721695619.615582 2126186 config.cc:257] gRPC experiments enabled: call_status_override_on_cancellation, call_tracer_in_transport, event_engine_dns, event_engine_listener, monitoring_experiment, pick_first_new, trace_record_callops, work_serializer_clears_time_cache
2024-07-22T17:46:59-07:00
Running bazel-bin/test/cpp/microbenchmarks/bm_stats_plugin
Run on (48 X 2450 MHz CPU s)
CPU Caches:
L1 Data 32 KiB (x24)
L1 Instruction 32 KiB (x24)
L2 Unified 512 KiB (x24)
L3 Unified 32768 KiB (x3)
Load Average: 1.16, 0.85, 0.85
***WARNING*** Library was built as DEBUG. Timings may be affected.
---------------------------------------------------------------------------
Benchmark Time CPU Iterations
---------------------------------------------------------------------------
BM_AddCounterWithFakeStatsPlugin 1738 ns 1738 ns 404265
BM_AddCounterWithOTelPlugin 757 ns 757 ns 928142
I0000 00:00:1721695621.304593 2126186 test_config.cc:186] TestEnvironment ends
```
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Closes#37282
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37282 from yijiem:otel-metrics-benchmark eeba3dfb5e
PiperOrigin-RevId: 655286398
1. Fixing unit test that flags log noise.
2. This test was broken for many months. As a result , a lot of log noise was added. Removing the noise as a part of the PR.
3. If we want to retain any log line as `INFO` instead of `VLOG(2)`, please let me know, I will add it to allow list.
4. In this PR , we replace the old `gpr_set_log_function` mechanism with an `absl LogSink` . So here , `Send` function will do everything that `NoLog` used to do before.
Closes#37177
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37177 from tanvi-jagtap:fix_nologging_tests ad58e2fb79
PiperOrigin-RevId: 655209718
1. Function gpr_default_log has been deprecated. This function will be deleted in a few weeks.
1. This entire unit test is being re-written as a part of another PR. But that PR will take a while to merge. In the mean team I want to delete all instances of this function to prevent further backsliding.
https://github.com/grpc/grpc/pull/37177
PiperOrigin-RevId: 654998772
1. Function gpr_set_log_verbosity has been deprecated. This function will be deleted in a few weeks.
1. gRPC now internally uses absl logging. Earlier gRPC was using its own custom logging mechanism called gpr which had a whole set of functions beginning with gpr_.
1. This entire unit test is being re-written as a part of another PR. But that PR will take a while to merge. In the mean team I want to delete all instances of this function to prevent further backsliding.
https://github.com/grpc/grpc/pull/37177
PiperOrigin-RevId: 654639955
Previously the registered callback's duration is set too low (10ms) that 2 different OTel callbacks get called from OTel consecutively would trigger the registered callback again, making the test flaky.
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Closes#37243
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37243 from yijiem:otel-plugin-test-flake 70a1572cd2
PiperOrigin-RevId: 653717643
- add a benchmark for various metadata creation styles
- add factory functions for status + message - these are 3-10x faster than going via absl::Status
- add a `MakePooledForOverwrite` function to Arena, use it everywhere -- this naming matches `std::make_unique_for_overwrite` in C++20, and avoids some language mandated initialization in `Table` (underlying `MetadataMap<>`) - speeding creation of metadata handles by 30%
For `bm_call_spine` we see before:
```
BM_UnaryWithSpawnPerEnd<CallSpineFixture>_median 745 ns 745 ns
```
and after:
```
BM_UnaryWithSpawnPerEnd<CallSpineFixture>_median 699 ns 699 ns
```
Closes#37111
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37111 from ctiller:meta-magic-2 100464fc7e
PiperOrigin-RevId: 652900726
[Gpr_To_Absl_Logging] Remove GRPC_API_TRACE .
This will be replaced by GRPC_TRACE_LOG
Closes#37190
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37190 from tanvi-jagtap:grpc_api_trace_fix 6dae72bc6e
PiperOrigin-RevId: 652397141
Instead of passing the transport byte counts back up through the filter
stack to be reported to the `CallTracer`, we now have the transport
pass the transport byte counts directly to the `CallTracer` itself.
This will eventually allow us to avoid unnecessarily storing these byte
counts in cases where no `CallTracer` actually cares about the data, which
will reduce per-call memory. (In the short term, it actually increases
memory usage, but we can separately do some work to avoid the memory
usage in the transport by removing the `grpc_transport_stream_stats`
struct from the legacy filter API.)
This is a prereq for supporting `CallTracer` in the new call v3 stack,
which does not include the transport byte counts as part of the
receieve-trailing-metadata hook, unlike the legacy filter stack.
This change is controlled by the `call_tracer_in_transport` experiment,
which is enabled by default.
As part of this experiment, we also fix a couple of related bugs:
- On the client side, the chttp2 transport was incorrectly adding
annotations to the parent `ClientCallTracer` instead of the
`CallAttemptTracer`.
- The OpenCensus `ServerCallTracer` was incorrectly swapping the values
of sent and received bytes.
PiperOrigin-RevId: 650728181
[Gpr_To_Absl_Logging] Migrating from gpr to absl logging - gpr_log
In this CL we are migrating from gRPCs own gpr logging mechanism to absl logging mechanism. The intention is to deprecate gpr_log in the future.
We have the following mapping
1. gpr_log(GPR_INFO,...) -> LOG(INFO)
2. gpr_log(GPR_ERROR,...) -> LOG(ERROR)
3. gpr_log(GPR_DEBUG,...) -> VLOG(2)
Reviewers need to check :
1. If the above mapping is correct.
2. The content of the log is as before.
gpr_log format strings did not use string_view or std::string . absl LOG accepts these. So there will be some elimination of string_view and std::string related conversions. This is expected.
Closes#37148
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37148 from tanvi-jagtap:src_core_lib_grpp_time 525cf70e24
PiperOrigin-RevId: 650460526
As per gRFC A81 (https://github.com/grpc/proposal/pull/435).
A few small improvements along the way:
- Use `DownCast<>` instead of `static_cast<>` in `ServiceConfigCallData::GetCallAttribute()`.
- Add a convenient templated wrapper for `ClientChannelLbCallState::GetCallAttribute()`, similar to the one on `ServiceConfigCallData`.
- Added a `ParseBoolValue()` helper to xds_common_types_parser, and use it in various places in xDS resource parsing.
Closes#37087
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37087 from markdroth:xds_authority_rewriting 3679d2b061
PiperOrigin-RevId: 650293912
As part of the xDS authority rewriting implementation in #37087, I need to write some tests showing the authority being rewritten. However, the fake security connector currently crashes on unexpected authorities. (As a side note, I think the fake security connector is very cumbersome and should be redesigned, but that's a separate project.) As a result, I need a way to use InsecureCreds on a per-test basis.
I thought about just adding an option to `XdsTestType` to trigger use of InsecureCreds, but the logic we use for determining which creds type to use for what is already very cumbersome, and adding another option there would have just made that worse. Instead, I have switched to a simpler approach where the individual tests can decide what creds type to use directly. This both unblocks my other PR and makes the existing code more maintainable.
Closes#37156
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37156 from markdroth:xds_e2e_test_creds_improvement 2e813834d0
PiperOrigin-RevId: 649225248
This moves more code out of the monolithic `grpc_xds_client` BUILD target. We still need more work to split it up completely, but this is a nice step in the right direction -- and it unblocks a subsequent PR that I'm working on for xDS authority rewriting.
Closes#37130
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37130 from markdroth:xds_resource_type_build_refactoring a021d9773c
PiperOrigin-RevId: 648742472
Since these were disabled they stopped working, and we really need to be tracking overheads here.
Closes#37077
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37077 from ctiller:it-must-work aa19a4aa89
PiperOrigin-RevId: 648469428
This allows CallTracers to be created with parameters dictated by
channel args.
For the moment, I've used the EventEngine `EndpointConfig` API to expose
the channel args here, so as to avoid directly exposing
`grpc_core::ChannelArgs`. We should determine a better API here before
we de-experimentalize the stats APIs.
Also add an experiment to be used in a subsequent PR.
PiperOrigin-RevId: 647730284
Reports to the metrics reporter may happen asynchronously with work serializer dispatch.
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Closes#37005
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37005 from yousukseung:xds-client-tests-fix d65d00a410
PiperOrigin-RevId: 647066953
Move event engine context to be an arena based context, and have party host arena directly.
Now `Party` can directly inject all context necessary without needing to call out to the derived type; this makes `Party` instantiable by itself (no need to inherit from it - though we'll still want to for `CallSpine` to simplify some arena lifetime management), meaning we can start to consider eliminating the base class `Activity` and merging these types.
Closes#37015
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37015 from ctiller:chaotic-party 7f44b37b5d
PiperOrigin-RevId: 646963003
Allow `CallFilters` to have more than one `CallFilters::Stack` attached to it, and execute all of the stacks when executing.
This permits a trivial implementation of `PassThrough` for `Interceptor`, and allows elimination of an inserted `ForwardCall` if an interception chain terminates in a `CallDestination` preceded by one or more filters.
Built on #36984 which should be merged first.
Closes#36985
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36985 from ctiller:step-by-step 07b14c9d91
PiperOrigin-RevId: 646586483
This test very occasionally needs to have gRPC initialized, so adding the init/shutdown scope just where it's needed.
Closes#37050
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37050 from ctiller:ci 4baad7af76
PiperOrigin-RevId: 646586430
Originally when I was implementing call-v3 I added async handling for server trailing metadata because it was symmetrical with all the other handling we had. Turns out that we really don't need this, and further it's probably harmful to our ability to reason about the stack - so I'm removing that capability.
Closes#36984
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36984 from ctiller:no-infallible-seq f3b3548685
PiperOrigin-RevId: 646146666
Updates to channel init registration ordering:
* Add ability to float filters towards the top of the stack or to sink them towards the bottom. This is a secondary hint to the explicit ordering constraints that we have. To avoid possible ambiguities we enforce that there can never be two tops/two bottoms available to add simultaneously (if this eventuality appears we simply require an explicit ordering between the two filters).
* Add the ability to skip some filters in the V2 stack (so we can start building V3 only filters)
Along the way:
* Add hashability to `UniqueTypeName`
* Remove `UniqueTypeName` copy constructor (this is just the default copy constructor anyway, and its presence started to confuse `clang-tidy`).
* Separate the dependency tracking and logging parts of channel_init.cc. This was necessary for my brain to be able to process how to implement the new ordering constraints. Happily, it also eliminates an O(n**2) loop in initialization!
Closes#36993
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36993 from ctiller:ordering-innit e9d08e7a81
PiperOrigin-RevId: 646144240
There's some tooling floating around that looks for `BM_` prefixed strings and was failing with these benchmarks.
Re-jiggle some macros around so that's no longer the case.
Closes#37024
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37024 from ctiller:bm- 9b2fc76807
PiperOrigin-RevId: 646137939
As we've learned what configuration is needed for our benchmarks the settings have been growing more and more bespoke for each binary. Try to consolidate that into some useful defaults.
Also ensure we always `linkstatic=1`. `cc_binary` defaults to this, so it's reasonable to assume that's the performance our customers see. It also deeply impacts performance for small microbenchmarks, and so enabling it gives us more apples:apples, and saves chasing things that don't matter.
Closes#37012
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/37012 from ctiller:benchmark-bin b84cab58c6
PiperOrigin-RevId: 645483183
Previously, metadata mutations were made by the picker directly, which meant that they would be applied even if the channel winds up discarding the pick due to the returned subchannel having been disconnected by the time the pick result is returned. This changes the API such that pickers return metadata mutations along with the pick result, so that the mutations won't get applied unless the pick result is actually used.
Closes#36968
COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/36968 from markdroth:lb_metadata_api 2765da6121
PiperOrigin-RevId: 645451869
Craig Tiller
Alisha Nanda
Tanvi Jagtap
Yash Tibrewal
Yijie Ma
Tanvi Jagtap
Mark D. Roth
alto-ruby
Esun Kim
Eugene Ostroukhov
Yousuk Seung