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[taler-exchange] branch master updated: remove wrap_size, obsolete


From: gnunet
Subject: [taler-exchange] branch master updated: remove wrap_size, obsolete
Date: Sun, 30 Jul 2023 16:46:02 +0200

This is an automated email from the git hooks/post-receive script.

grothoff pushed a commit to branch master
in repository exchange.

The following commit(s) were added to refs/heads/master by this push:
     new c8e48508 remove wrap_size, obsolete
c8e48508 is described below

commit c8e485088b0139c56edd45ab20ae6d7cfc196dbc
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Sun Jul 30 16:45:50 2023 +0200

    remove wrap_size, obsolete
---
 src/exchange/taler-exchange-wirewatch.c  |  32 +--
 src/exchangedb/perf_reserves_in_insert.c |  15 +-
 src/exchangedb/pg_reserves_in_insert.c   | 406 +++++++++++++++----------------
 src/exchangedb/pg_reserves_in_insert.h   |   2 -
 src/exchangedb/test_exchangedb.c         |   2 -
 src/include/taler_exchangedb_plugin.h    |   1 -
 6 files changed, 209 insertions(+), 249 deletions(-)

diff --git a/src/exchange/taler-exchange-wirewatch.c 
b/src/exchange/taler-exchange-wirewatch.c
index c27b0700..cfcd7467 100644
--- a/src/exchange/taler-exchange-wirewatch.c
+++ b/src/exchange/taler-exchange-wirewatch.c
@@ -510,13 +510,11 @@ transaction_completed (void)
  * We got incoming transaction details from the bank. Add them
  * to the database.
  *
- * @param wrap_size desired bulk insert size
  * @param details array of transaction details
  * @param details_length length of the @a details array
  */
 static void
-process_reply (unsigned int wrap_size,
-               const struct TALER_BANK_CreditDetails *details,
+process_reply (const struct TALER_BANK_CreditDetails *details,
                unsigned int details_length)
 {
   enum GNUNET_DB_QueryStatus qs;
@@ -585,7 +583,6 @@ process_reply (unsigned int wrap_size,
     qs = db_plugin->reserves_in_insert (db_plugin->cls,
                                         reserves,
                                         details_length,
-                                        wrap_size,
                                         qss);
     switch (qs)
     {
@@ -595,8 +592,8 @@ process_reply (unsigned int wrap_size,
       return;
     case GNUNET_DB_STATUS_SOFT_ERROR:
       GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                  "Got DB soft error for batch2_reserves_in_insert (%u). 
Rolling back.\n",
-                  wrap_size);
+                  "Got DB soft error for reserves_in_insert (%u). Rolling 
back.\n",
+                  details_length);
       handle_soft_error ();
       return;
     default:
@@ -701,27 +698,7 @@ static void
 history_cb (void *cls,
             const struct TALER_BANK_CreditHistoryResponse *reply)
 {
-  static int wrap_size = -2;
-
   (void) cls;
-  if (-2 == wrap_size)
-  {
-    const char *mode = getenv ("TALER_WIREWATCH_WARP_SIZE");
-    char dummy;
-
-    if ( (NULL == mode) ||
-         (1 != sscanf (mode,
-                       "%d%c",
-                       &wrap_size,
-                       &dummy)) )
-    {
-      if (NULL != mode)
-        GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-                    "Bad batch mode `%s' specified\n",
-                    mode);
-      wrap_size = 8; /* maximum supported is currently 8 */
-    }
-  }
   GNUNET_assert (NULL == task);
   hh = NULL;
   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
@@ -730,8 +707,7 @@ history_cb (void *cls,
   switch (reply->http_status)
   {
   case MHD_HTTP_OK:
-    process_reply (wrap_size,
-                   reply->details.ok.details,
+    process_reply (reply->details.ok.details,
                    reply->details.ok.details_length);
     return;
   case MHD_HTTP_NO_CONTENT:
diff --git a/src/exchangedb/perf_reserves_in_insert.c 
b/src/exchangedb/perf_reserves_in_insert.c
index 9f3ed460..09c4a43c 100644
--- a/src/exchangedb/perf_reserves_in_insert.c
+++ b/src/exchangedb/perf_reserves_in_insert.c
@@ -78,8 +78,9 @@ run (void *cls)
 {
   struct GNUNET_CONFIGURATION_Handle *cfg = cls;
   const uint32_t num_partitions = 10;
-  static unsigned int batches[] = {1, 1, 2, 3, 4, 16, 32 };
-  const unsigned int lcm = 3 * 32;
+  static unsigned int batches[] = {1, 1, 2, 3, 4, 16, 32, 64, 128, 256, 512,
+                                   1024, 1024, 512, 256, 128, 64, 32,
+                                   16, 4, 3, 2, 1 };
   struct GNUNET_TIME_Relative times[sizeof (batches) / sizeof(*batches)];
   unsigned long long sqrs[sizeof (batches) / sizeof(*batches)];
 
@@ -109,7 +110,7 @@ run (void *cls)
          i< sizeof(batches) / sizeof(*batches);
          i++)
     {
-      unsigned int batch_size = batches[i];
+      unsigned int lcm = batches[i];
       struct TALER_Amount value;
       struct GNUNET_TIME_Absolute now;
       struct GNUNET_TIME_Timestamp ts;
@@ -141,7 +142,6 @@ run (void *cls)
                 plugin->reserves_in_insert (plugin->cls,
                                             reserves,
                                             lcm,
-                                            batch_size,
                                             results));
       }
       duration = GNUNET_TIME_absolute_get_duration (now);
@@ -159,6 +159,7 @@ run (void *cls)
        i< sizeof(batches) / sizeof(*batches);
        i++)
   {
+    unsigned int lcm = batches[i];
     struct GNUNET_TIME_Relative avg;
     double avg_dbl;
     double variance;
@@ -168,10 +169,10 @@ run (void *cls)
     avg_dbl = avg.rel_value_us;
     variance = sqrs[i] - (avg_dbl * avg_dbl * ROUNDS);
     fprintf (stdout,
-             "Batch[%2u]: %8llu ± %6.0f\n",
+             "Batch[%4u]: %8llu us/entry ± %6.0f\n",
              batches[i],
-             (unsigned long long) avg.rel_value_us,
-             sqrt (variance / (ROUNDS - 1)));
+             (unsigned long long) avg.rel_value_us / lcm,
+             sqrt (variance / lcm / (ROUNDS - 1)));
   }
   result = 0;
 drop:
diff --git a/src/exchangedb/pg_reserves_in_insert.c 
b/src/exchangedb/pg_reserves_in_insert.c
index d5cb8820..1b854045 100644
--- a/src/exchangedb/pg_reserves_in_insert.c
+++ b/src/exchangedb/pg_reserves_in_insert.c
@@ -134,251 +134,239 @@ helper_cb (void *cls,
 enum GNUNET_DB_QueryStatus
 TEH_PG_reserves_in_insert (
   void *cls,
-  const struct TALER_EXCHANGEDB_ReserveInInfo *real_reserves,
-  unsigned int real_reserves_length,
-  unsigned int batch_size,
+  const struct TALER_EXCHANGEDB_ReserveInInfo *reserves,
+  unsigned int reserves_length,
   enum GNUNET_DB_QueryStatus *results)
 {
   struct PostgresClosure *pg = cls;
   unsigned int dups = 0;
-  batch_size = real_reserves_length;
-  enum GNUNET_DB_QueryStatus rqs = 0;
 
-  for (unsigned int batch = 0; batch < real_reserves_length;
-       batch += batch_size)
+  struct TALER_PaytoHashP h_paytos[GNUNET_NZL (reserves_length)];
+  char *notify_s[GNUNET_NZL (reserves_length)];
+  struct TALER_ReservePublicKeyP reserve_pubs[GNUNET_NZL (reserves_length)];
+  struct TALER_Amount balances[GNUNET_NZL (reserves_length)];
+  struct GNUNET_TIME_Timestamp execution_times[GNUNET_NZL (reserves_length)];
+  const char *sender_account_details[GNUNET_NZL (reserves_length)];
+  const char *exchange_account_names[GNUNET_NZL (reserves_length)];
+  uint64_t wire_references[GNUNET_NZL (reserves_length)];
+  uint64_t reserve_uuids[GNUNET_NZL (reserves_length)];
+  bool transaction_duplicates[GNUNET_NZL (reserves_length)];
+  bool conflicts[GNUNET_NZL (reserves_length)];
+  struct GNUNET_TIME_Timestamp reserve_expiration
+    = GNUNET_TIME_relative_to_timestamp (pg->idle_reserve_expiration_time);
+  struct GNUNET_TIME_Timestamp gc
+    = GNUNET_TIME_relative_to_timestamp (pg->legal_reserve_expiration_time);
+  enum GNUNET_DB_QueryStatus qs;
+  bool need_update;
+
+  for (unsigned int i = 0; i<reserves_length; i++)
   {
-    const struct TALER_EXCHANGEDB_ReserveInInfo *reserves =
-      &real_reserves[batch];
-    unsigned int reserves_length = GNUNET_MIN (batch_size,
-                                               real_reserves_length - batch);
-    struct TALER_PaytoHashP h_paytos[GNUNET_NZL (reserves_length)];
-    char *notify_s[GNUNET_NZL (reserves_length)];
-    struct TALER_ReservePublicKeyP reserve_pubs[GNUNET_NZL (reserves_length)];
-    struct TALER_Amount balances[GNUNET_NZL (reserves_length)];
-    struct GNUNET_TIME_Timestamp execution_times[GNUNET_NZL (reserves_length)];
-    const char *sender_account_details[GNUNET_NZL (reserves_length)];
-    const char *exchange_account_names[GNUNET_NZL (reserves_length)];
-    uint64_t wire_references[GNUNET_NZL (reserves_length)];
-    uint64_t reserve_uuids[GNUNET_NZL (reserves_length)];
-    bool transaction_duplicates[GNUNET_NZL (reserves_length)];
-    bool conflicts[GNUNET_NZL (reserves_length)];
-    struct GNUNET_TIME_Timestamp reserve_expiration
-      = GNUNET_TIME_relative_to_timestamp (pg->idle_reserve_expiration_time);
-    struct GNUNET_TIME_Timestamp gc
-      = GNUNET_TIME_relative_to_timestamp (pg->legal_reserve_expiration_time);
-    enum GNUNET_DB_QueryStatus qs;
-    bool need_update;
+    const struct TALER_EXCHANGEDB_ReserveInInfo *reserve = &reserves[i];
 
-    for (unsigned int i = 0; i<reserves_length; i++)
-    {
-      const struct TALER_EXCHANGEDB_ReserveInInfo *reserve = &reserves[i];
+    TALER_payto_hash (reserve->sender_account_details,
+                      &h_paytos[i]);
+    notify_s[i] = compute_notify_on_reserve (reserve->reserve_pub);
+    reserve_pubs[i] = *reserve->reserve_pub;
+    balances[i] = *reserve->balance;
+    execution_times[i] = reserve->execution_time;
+    sender_account_details[i] = reserve->sender_account_details;
+    exchange_account_names[i] = reserve->exchange_account_name;
+    wire_references[i] = reserve->wire_reference;
+  }
 
-      TALER_payto_hash (reserve->sender_account_details,
-                        &h_paytos[i]);
-      notify_s[i] = compute_notify_on_reserve (reserve->reserve_pub);
-      reserve_pubs[i] = *reserve->reserve_pub;
-      balances[i] = *reserve->balance;
-      execution_times[i] = reserve->execution_time;
-      sender_account_details[i] = reserve->sender_account_details;
-      exchange_account_names[i] = reserve->exchange_account_name;
-      wire_references[i] = reserve->wire_reference;
-    }
+  /* NOTE: kind-of pointless to explicitly start a transaction here... */
+  if (GNUNET_OK !=
+      TEH_PG_preflight (pg))
+  {
+    GNUNET_break (0);
+    qs = GNUNET_DB_STATUS_HARD_ERROR;
+    goto finished;
+  }
+  if (GNUNET_OK !=
+      TEH_PG_start_read_committed (pg,
+                                   "READ_COMMITED"))
+  {
+    GNUNET_break (0);
+    qs = GNUNET_DB_STATUS_HARD_ERROR;
+    goto finished;
+  }
+  PREPARE (pg,
+           "reserves_insert_with_array",
+           "SELECT"
+           " transaction_duplicate"
+           ",ruuid"
+           " FROM exchange_do_array_reserves_insert"
+           " ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10);");
+  {
+    struct GNUNET_PQ_QueryParam params[] = {
+      GNUNET_PQ_query_param_timestamp (&gc),
+      GNUNET_PQ_query_param_timestamp (&reserve_expiration),
+      GNUNET_PQ_query_param_array_auto_from_type (reserves_length,
+                                                  reserve_pubs,
+                                                  pg->conn),
+      GNUNET_PQ_query_param_array_uint64 (reserves_length,
+                                          wire_references,
+                                          pg->conn),
+      TALER_PQ_query_param_array_amount (
+        reserves_length,
+        balances,
+        pg->conn),
+      GNUNET_PQ_query_param_array_ptrs_string (
+        reserves_length,
+        (const char **) exchange_account_names,
+        pg->conn),
+      GNUNET_PQ_query_param_array_timestamp (
+        reserves_length,
+        execution_times,
+        pg->conn),
+      GNUNET_PQ_query_param_array_auto_from_type (
+        reserves_length,
+        h_paytos,
+        pg->conn),
+      GNUNET_PQ_query_param_array_ptrs_string (
+        reserves_length,
+        (const char **) sender_account_details,
+        pg->conn),
+      GNUNET_PQ_query_param_array_ptrs_string (
+        reserves_length,
+        (const char **) notify_s,
+        pg->conn),
+      GNUNET_PQ_query_param_end
+    };
+    struct Context ctx = {
+      .reserve_uuids = reserve_uuids,
+      .transaction_duplicates = transaction_duplicates,
+      .conflicts = conflicts,
+      .needs_update = false,
+      .status = GNUNET_OK
+    };
 
-    /* NOTE: kind-of pointless to explicitly start a transaction here... */
-    if (GNUNET_OK !=
-        TEH_PG_preflight (pg))
+    qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
+                                               "reserves_insert_with_array",
+                                               params,
+                                               &helper_cb,
+                                               &ctx);
+    if ( (qs < 0) ||
+         (GNUNET_OK != ctx.status) )
     {
-      GNUNET_break (0);
-      qs = GNUNET_DB_STATUS_HARD_ERROR;
+      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+                  "Failed to insert into reserves (%d)\n",
+                  qs);
       goto finished;
     }
-    if (GNUNET_OK !=
-        TEH_PG_start_read_committed (pg,
-                                     "READ_COMMITED"))
+    need_update = ctx.needs_update;
+  }
+
+  {
+    enum GNUNET_DB_QueryStatus cs;
+
+    cs = TEH_PG_commit (pg);
+    if (cs < 0)
     {
-      GNUNET_break (0);
-      qs = GNUNET_DB_STATUS_HARD_ERROR;
+      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+                  "Failed to commit\n");
+      qs = cs;
       goto finished;
     }
-    PREPARE (pg,
-             "reserves_insert_with_array",
-             "SELECT"
-             " transaction_duplicate"
-             ",ruuid"
-             " FROM exchange_do_array_reserves_insert"
-             " ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10);");
+  }
+
+  for (unsigned int i = 0; i<reserves_length; i++)
+  {
+    if (transaction_duplicates[i])
+      dups++;
+    results[i] = transaction_duplicates[i]
+      ? GNUNET_DB_STATUS_SUCCESS_NO_RESULTS
+      : GNUNET_DB_STATUS_SUCCESS_ONE_RESULT;
+  }
+
+  if (! need_update)
+  {
+    qs = reserves_length;
+    goto finished;
+  }
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+              "Reserve update needed for some reserves in the batch\n");
+  PREPARE (pg,
+           "reserves_update",
+           "SELECT"
+           " out_duplicate AS duplicate "
+           "FROM exchange_do_batch_reserves_update"
+           " ($1,$2,$3,$4,$5,$6,$7);");
+
+  if (GNUNET_OK !=
+      TEH_PG_start (pg,
+                    "reserve-insert-continued"))
+  {
+    GNUNET_break (0);
+    qs = GNUNET_DB_STATUS_HARD_ERROR;
+    goto finished;
+  }
+
+  for (unsigned int i = 0; i<reserves_length; i++)
+  {
+    if (transaction_duplicates[i])
+      continue;
+    if (! conflicts[i])
+      continue;
     {
+      bool duplicate;
       struct GNUNET_PQ_QueryParam params[] = {
-        GNUNET_PQ_query_param_timestamp (&gc),
+        GNUNET_PQ_query_param_auto_from_type (&reserve_pubs[i]),
         GNUNET_PQ_query_param_timestamp (&reserve_expiration),
-        GNUNET_PQ_query_param_array_auto_from_type (reserves_length,
-                                                    reserve_pubs,
-                                                    pg->conn),
-        GNUNET_PQ_query_param_array_uint64 (reserves_length,
-                                            wire_references,
-                                            pg->conn),
-        TALER_PQ_query_param_array_amount (
-          reserves_length,
-          balances,
-          pg->conn),
-        GNUNET_PQ_query_param_array_ptrs_string (
-          reserves_length,
-          (const char **) exchange_account_names,
-          pg->conn),
-        GNUNET_PQ_query_param_array_timestamp (
-          reserves_length,
-          execution_times,
-          pg->conn),
-        GNUNET_PQ_query_param_array_auto_from_type (
-          reserves_length,
-          h_paytos,
-          pg->conn),
-        GNUNET_PQ_query_param_array_ptrs_string (
-          reserves_length,
-          (const char **) sender_account_details,
-          pg->conn),
-        GNUNET_PQ_query_param_array_ptrs_string (
-          reserves_length,
-          (const char **) notify_s,
-          pg->conn),
+        GNUNET_PQ_query_param_uint64 (&wire_references[i]),
+        TALER_PQ_query_param_amount (pg->conn,
+                                     &balances[i]),
+        GNUNET_PQ_query_param_string (exchange_account_names[i]),
+        GNUNET_PQ_query_param_auto_from_type (&h_paytos[i]),
+        GNUNET_PQ_query_param_string (notify_s[i]),
         GNUNET_PQ_query_param_end
       };
-      struct Context ctx = {
-        .reserve_uuids = reserve_uuids,
-        .transaction_duplicates = transaction_duplicates,
-        .conflicts = conflicts,
-        .needs_update = false,
-        .status = GNUNET_OK
+      struct GNUNET_PQ_ResultSpec rs[] = {
+        GNUNET_PQ_result_spec_bool ("duplicate",
+                                    &duplicate),
+        GNUNET_PQ_result_spec_end
       };
+      enum GNUNET_DB_QueryStatus qs;
 
-      qs = GNUNET_PQ_eval_prepared_multi_select (pg->conn,
-                                                 "reserves_insert_with_array",
-                                                 params,
-                                                 &helper_cb,
-                                                 &ctx);
-      if ( (qs < 0) ||
-           (GNUNET_OK != ctx.status) )
+      qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                     "reserves_update",
+                                                     params,
+                                                     rs);
+      if (qs < 0)
       {
         GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                    "Failed to insert into reserves (%d)\n",
+                    "Failed to update reserves (%d)\n",
                     qs);
+        results[i] = qs;
         goto finished;
       }
-      need_update = ctx.needs_update;
-    }
-
-    {
-      enum GNUNET_DB_QueryStatus cs;
-
-      cs = TEH_PG_commit (pg);
-      if (cs < 0)
-      {
-        GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                    "Failed to commit\n");
-        qs = cs;
-        goto finished;
-      }
-    }
-
-    for (unsigned int i = 0; i<reserves_length; i++)
-    {
-      if (transaction_duplicates[i])
-        dups++;
-      results[i] = transaction_duplicates[i]
-      ? GNUNET_DB_STATUS_SUCCESS_NO_RESULTS
-      : GNUNET_DB_STATUS_SUCCESS_ONE_RESULT;
-    }
-
-    if (! need_update)
-    {
-      qs = reserves_length;
-      goto finished;
-    }
-    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                "Reserve update needed for some reserves in the batch\n");
-    PREPARE (pg,
-             "reserves_update",
-             "SELECT"
-             " out_duplicate AS duplicate "
-             "FROM exchange_do_batch_reserves_update"
-             " ($1,$2,$3,$4,$5,$6,$7);");
-
-    if (GNUNET_OK !=
-        TEH_PG_start (pg,
-                      "reserve-insert-continued"))
-    {
-      GNUNET_break (0);
-      qs = GNUNET_DB_STATUS_HARD_ERROR;
-      goto finished;
-    }
-
-    for (unsigned int i = 0; i<reserves_length; i++)
-    {
-      if (transaction_duplicates[i])
-        continue;
-      if (! conflicts[i])
-        continue;
-      {
-        bool duplicate;
-        struct GNUNET_PQ_QueryParam params[] = {
-          GNUNET_PQ_query_param_auto_from_type (&reserve_pubs[i]),
-          GNUNET_PQ_query_param_timestamp (&reserve_expiration),
-          GNUNET_PQ_query_param_uint64 (&wire_references[i]),
-          TALER_PQ_query_param_amount (pg->conn,
-                                       &balances[i]),
-          GNUNET_PQ_query_param_string (exchange_account_names[i]),
-          GNUNET_PQ_query_param_auto_from_type (&h_paytos[i]),
-          GNUNET_PQ_query_param_string (notify_s[i]),
-          GNUNET_PQ_query_param_end
-        };
-        struct GNUNET_PQ_ResultSpec rs[] = {
-          GNUNET_PQ_result_spec_bool ("duplicate",
-                                      &duplicate),
-          GNUNET_PQ_result_spec_end
-        };
-        enum GNUNET_DB_QueryStatus qs;
-
-        qs = GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
-                                                       "reserves_update",
-                                                       params,
-                                                       rs);
-        if (qs < 0)
-        {
-          GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                      "Failed to update reserves (%d)\n",
-                      qs);
-          results[i] = qs;
-          goto finished;
-        }
-        results[i] = duplicate
+      results[i] = duplicate
           ? GNUNET_DB_STATUS_SUCCESS_NO_RESULTS
           : GNUNET_DB_STATUS_SUCCESS_ONE_RESULT;
-      }
     }
-    {
-      enum GNUNET_DB_QueryStatus cs;
+  }
+  {
+    enum GNUNET_DB_QueryStatus cs;
 
-      cs = TEH_PG_commit (pg);
-      if (cs < 0)
-      {
-        GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-                    "Failed to commit\n");
-        qs = cs;
-        goto finished;
-      }
+    cs = TEH_PG_commit (pg);
+    if (cs < 0)
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+                  "Failed to commit\n");
+      qs = cs;
+      goto finished;
     }
-finished:
-    for (unsigned int i = 0; i<reserves_length; i++)
-      GNUNET_free (notify_s[i]);
-    if (qs < 0)
-      return qs;
-    rqs += qs;
   }
+finished:
+  for (unsigned int i = 0; i<reserves_length; i++)
+    GNUNET_free (notify_s[i]);
+  if (qs < 0)
+    return qs;
   GNUNET_PQ_event_do_poll (pg->conn);
   if (0 != dups)
     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                 "%u/%u duplicates among incoming transactions. Try increasing 
WIREWATCH_IDLE_SLEEP_INTERVAL in the [exchange] configuration section (if this 
happens a lot).\n",
                 dups,
-                real_reserves_length);
-  return rqs;
+                reserves_length);
+  return qs;
 }
diff --git a/src/exchangedb/pg_reserves_in_insert.h 
b/src/exchangedb/pg_reserves_in_insert.h
index f92843e7..938df3ad 100644
--- a/src/exchangedb/pg_reserves_in_insert.h
+++ b/src/exchangedb/pg_reserves_in_insert.h
@@ -33,7 +33,6 @@
  * @param cls the `struct PostgresClosure` with the plugin-specific state
  * @param reserves array of reserves to insert
  * @param reserves_length length of the @a reserves array
- * @param batch_size how many inserts to do in one go
  * @param[out] results set to query status per reserve, must be of length @a 
reserves_length
  * @return transaction status code
  */
@@ -42,7 +41,6 @@ TEH_PG_reserves_in_insert (
   void *cls,
   const struct TALER_EXCHANGEDB_ReserveInInfo *reserves,
   unsigned int reserves_length,
-  unsigned int batch_size,
   enum GNUNET_DB_QueryStatus *results);
 
 
diff --git a/src/exchangedb/test_exchangedb.c b/src/exchangedb/test_exchangedb.c
index 36f51120..659f8269 100644
--- a/src/exchangedb/test_exchangedb.c
+++ b/src/exchangedb/test_exchangedb.c
@@ -1311,7 +1311,6 @@ run (void *cls)
             plugin->reserves_in_insert (plugin->cls,
                                         &reserve,
                                         1,
-                                        1,
                                         &qsr));
     FAILIF (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT !=
             qsr);
@@ -1338,7 +1337,6 @@ run (void *cls)
             plugin->reserves_in_insert (plugin->cls,
                                         &reserve,
                                         1,
-                                        1,
                                         &qsr));
     FAILIF (GNUNET_DB_STATUS_SUCCESS_ONE_RESULT !=
             qsr);
diff --git a/src/include/taler_exchangedb_plugin.h 
b/src/include/taler_exchangedb_plugin.h
index f5fdd7f1..e5107808 100644
--- a/src/include/taler_exchangedb_plugin.h
+++ b/src/include/taler_exchangedb_plugin.h
@@ -3700,7 +3700,6 @@ struct TALER_EXCHANGEDB_Plugin
     void *cls,
     const struct TALER_EXCHANGEDB_ReserveInInfo *reserves,
     unsigned int reserves_length,
-    unsigned int batch_size,
     enum GNUNET_DB_QueryStatus *results);
 
 

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