Bottleneck due to sequential transactions
-----------------------------------------
Key: SANDESHA2C-30
URL: https://issues.apache.org/jira/browse/SANDESHA2C-30
Project: Sandesha2/C
Issue Type: Bug
Reporter: Damitha Kumarage
When a new transaction is requested from sandesha2_storage_mgr it waits for 1
for each transaction which is currently active.
Here is culprit code
for (index = axis2_hash_first(storage_mgr_impl->transactions , env); index;
index = axis2_hash_next(env, index))
{
void *v = NULL;
sandesha2_transaction_t *temp = NULL;
axis2_hash_this(index, NULL, NULL, &v);
temp = (sandesha2_transaction_t *) v;
while(sandesha2_permanent_transaction_is_active(temp, env))
{
AXIS2_SLEEP(1);
}
}
I changed this code to following
thread_id_key = AXIS2_MALLOC(env->allocator, sizeof(char)*128);
sprintf(thread_id_key, "%lu", thread_id);
transaction = (sandesha2_transaction_t *) axis2_hash_get(
storage_mgr_impl->transactions, thread_id_key, AXIS2_HASH_KEY_STRING);
while(transaction && sandesha2_permanent_transaction_is_active(transaction,
env))
{
AXIS2_SLEEP(1);
}
in this case it waits only if the transaction is for the same thread id which
is acceptable
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