HL Iroha TxStatusStream performance degradation

perfo.py

#!/usr/bin/env python3
#
# Copyright Soramitsu Co., Ltd. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0
#


from irohalib import Iroha, IrohaCrypto, IrohaGrpc
import uuid
import time
import binascii

admin_key = open('../admin@test.priv', 'rb').read()

iroha = Iroha('admin@test')


def check(message='', ts=None):
    now = time.time()
    diff_str = ''
    if ts:
        diff = now - ts
        diff_str = '(diff: {})'.format(time.strftime("%H:%M:%S", time.gmtime(diff)))
    print('{} {} {}'.format(time.strftime("%H:%M:%S", time.gmtime(now)), message, diff_str))
    return now


def compose_tx():
    tx = iroha.transaction([
        iroha.command('CreateAccount',
                      account_name=uuid.uuid4().hex,
                      domain_id='test',
                      public_key=IrohaCrypto.private_key())
    ])
    IrohaCrypto.sign_transaction(tx, admin_key)
    return tx


txs = [compose_tx() for x in range(100)]
net = IrohaGrpc()

t1 = check('start sending')
net.send_txs(*txs)
t2 = check('start requesting statuses', t1)
tt = check('interval', t2)
for tpl in enumerate(txs):
    print('TX {}'.format(tpl[0]), binascii.hexlify(IrohaCrypto.hash(tpl[1])))
    sc = 9
    while sc != 5:
        print('resub')
        for status in net.tx_status_stream(tpl[1]):
            sc = status[1]
            print(status)

    tt = check('interval', tt)

t3 = check('end', t2)