chore(profiling): Change continuous profile sampling frequency and buffer size

This lowers the sampling frequency of continous profiles to 21Hz and increases
the buffer size to 1 minute.

Author: Zylphrex

sentry_sdk/profiler/continuous_profiler.py

@@ -9,10 +9,7 @@
 from sentry_sdk.consts import VERSION
 from sentry_sdk.envelope import Envelope
 from sentry_sdk._lru_cache import LRUCache
-from sentry_sdk.profiler.utils import (
-    DEFAULT_SAMPLING_FREQUENCY,
-    extract_stack,
-)
+from sentry_sdk.profiler.utils import extract_stack
 from sentry_sdk.utils import (
     capture_internal_exception,
     is_gevent,
@@ -52,6 +49,11 @@
     )
 
 
+# The default sampling frequency to use. This is set at 21 in order to
+# mitigate the effects of lockstep sampling.
+DEFAULT_SAMPLING_FREQUENCY = 21
+
+
 try:
     from gevent.monkey import get_original
     from gevent.threadpool import ThreadPool as _ThreadPool
@@ -407,7 +409,7 @@ def teardown(self):
         self.buffer = None
 
 
-PROFILE_BUFFER_SECONDS = 10
+PROFILE_BUFFER_SECONDS = 60
 
 
 class ProfileBuffer:

tests/profiler/test_continuous_profiler.py

@@ -200,7 +200,7 @@ def test_continuous_profiler_auto_start_and_manual_stop(
 
     with sentry_sdk.start_transaction(name="profiling"):
         with sentry_sdk.start_span(op="op"):
-            time.sleep(0.05)
+            time.sleep(0.1)
 
     assert_single_transaction_with_profile_chunks(envelopes, thread)
 
@@ -211,7 +211,7 @@ def test_continuous_profiler_auto_start_and_manual_stop(
 
         with sentry_sdk.start_transaction(name="profiling"):
             with sentry_sdk.start_span(op="op"):
-                time.sleep(0.05)
+                time.sleep(0.1)
 
         assert_single_transaction_without_profile_chunks(envelopes)
 
@@ -221,7 +221,7 @@ def test_continuous_profiler_auto_start_and_manual_stop(
 
         with sentry_sdk.start_transaction(name="profiling"):
             with sentry_sdk.start_span(op="op"):
-                time.sleep(0.05)
+                time.sleep(0.1)
 
         assert_single_transaction_with_profile_chunks(envelopes, thread)