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add latency logging

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This commit is contained in:
Christian Grothoff 2021-12-09 13:29:07 +01:00
parent dcb73693dd
commit ce28d3b8e4
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GPG Key ID: 939E6BE1E29FC3CC
2 changed files with 23 additions and 0 deletions
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18
src/exchange/taler-exchange-httpd.c
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@ -58,6 +58,11 @@
*/ */
#define UNIX_BACKLOG 50 #define UNIX_BACKLOG 50
/**
* Above what request latency do we start to log?
*/
#define WARN_LATENCY GNUNET_TIME_relative_multiply ( \
GNUNET_TIME_UNIT_MILLISECONDS, 500)
/** /**
* Are clients allowed to request /keys for times other than the * Are clients allowed to request /keys for times other than the
@ -383,6 +388,18 @@ handle_mhd_completion_callback (void *cls,
/* Sanity-check that we didn't leave any transactions hanging */ /* Sanity-check that we didn't leave any transactions hanging */
GNUNET_break (GNUNET_OK == GNUNET_break (GNUNET_OK ==
TEH_plugin->preflight (TEH_plugin->cls)); TEH_plugin->preflight (TEH_plugin->cls));
{
struct GNUNET_TIME_Relative latency;
latency = GNUNET_TIME_absolute_get_duration (rc->start_time);
if (latency.rel_value_us >
WARN_LATENCY.rel_value_us)
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Request for `%s' took %s\n",
rc->url,
GNUNET_STRINGS_relative_time_to_string (latency,
GNUNET_YES));
}
GNUNET_free (rc); GNUNET_free (rc);
*con_cls = NULL; *con_cls = NULL;
GNUNET_async_scope_restore (&old_scope); GNUNET_async_scope_restore (&old_scope);
@ -987,6 +1004,7 @@ handle_mhd_request (void *cls,
/* We're in a new async scope! */ /* We're in a new async scope! */
rc = *con_cls = GNUNET_new (struct TEH_RequestContext); rc = *con_cls = GNUNET_new (struct TEH_RequestContext);
rc->start_time = GNUNET_TIME_absolute_get ();
GNUNET_async_scope_fresh (&rc->async_scope_id); GNUNET_async_scope_fresh (&rc->async_scope_id);
TEH_check_invariants (); TEH_check_invariants ();
rc->url = url; rc->url = url;

5
src/exchange/taler-exchange-httpd.h
View File

@ -218,6 +218,11 @@ struct TEH_RequestContext
*/ */
struct GNUNET_AsyncScopeId async_scope_id; struct GNUNET_AsyncScopeId async_scope_id;
/**
* When was this request started?
*/
struct GNUNET_TIME_Absolute start_time;
/** /**
* Opaque parsing context. * Opaque parsing context.
*/ */