[MXS-2639] maxinfo memory leak Created: 2019-08-14  Updated: 2019-12-19  Resolved: 2019-10-10

Status: Closed
Project: MariaDB MaxScale
Component/s: maxinfo
Affects Version/s: 2.3.9, 2.3.11
Fix Version/s: 2.3.13

Type: Bug Priority: Major
Reporter: Sergey Smirnov Assignee: markus makela
Resolution: Fixed Votes: 0
Labels: None

Attachments: PNG File Screenshot_20190814_122734.png     PNG File Screenshot_20190814_123005.png     File ms_print.gz     File ms_print_maxscale-2.3.15-1.gz    

 Description   

Hi!
I use readwritesplit router on maxscale-2.3.9, but problem can be reproduce on maxscale-2.3.11.
Kernel: 3.10.0-957.12.2.el7.x86_64

UPD: My configuration use keepalived(active - passive), I see memory leak on passive node too.
UPD: add valgrind ms_print result to attach (massif test)

[maxscale]
 
threads = auto
 
 
 
###
 
#       SERVERS
 
###
 
[mysql-dev01]
 
type = server
 
protocol = MariaDBBackend
 
address = 192.168.0.18
 
port = 3307
 
 
 
[mysql-dev02]
 
type = server
 
protocol = MariaDBBackend
 
address = 192.168.0.20
 
port = 3307
 
 
 
[mysql-dev03]
 
type = server
 
protocol = MariaDBBackend
 
address = 192.168.0.98
 
port = 3307
 
 
 
[mysql-dev04]
 
type = server
 
protocol = MariaDBBackend
 
address = 192.168.0.99
 
port = 3307
 
 
 
[mysql-dev05]
 
type = server
 
protocol = MariaDBBackend
 
address = 192.168.0.103
 
port = 3307
 
 
 
[mysql-dev06]
 
type = server
 
protocol = MariaDBBackend
 
address = 192.168.0.104
 
port = 3307
 
 
 
[mysql-dev07]
 
type = server
 
protocol = MariaDBBackend
 
address = 192.168.0.106
 
port = 3307
 
 
 
[mysql-dev08]
 
type = server
 
protocol = MariaDBBackend
 
address = 192.168.0.107
 
port = 3307
 
 
 
[mysql-dev09]
 
type = server
 
protocol = MariaDBBackend
 
address = 192.168.0.108
 
port = 3307
 
 
 
[mysql-dev10]
 
type = server
 
protocol = MariaDBBackend
 
address = 192.168.0.31
 
port = 3307
 
 
 
[mysql-dev11]
 
type = server
 
protocol = MariaDBBackend
 
address = 192.168.0.169
 
port = 3307
 
 
 
[mysql-dev12]
 
type = server
 
protocol = MariaDBBackend
 
address = 192.168.0.170
 
port = 3307
 
 
 
 
 
 
 
###
 
#       SERVICES
 
###
 
[Service-for-cluster_12]
 
user = maxscale
 
password = fixme
 
filters = Hint
 
type = service
 
router = readwritesplit
 
servers = mysql-dev01, mysql-dev02
 
master_accept_reads = true
 
[Service-for-cluster_34]
 
user = maxscale
 
password = fixme
 
filters = Hint
 
type = service
 
router = readwritesplit
 
servers = mysql-dev03, mysql-dev04
 
master_accept_reads = true
 
[Service-for-cluster_78]
 
user = maxscale
 
password = fixme
 
filters = Hint
 
type = service
 
router = readwritesplit
 
servers = mysql-dev07, mysql-dev08
 
master_accept_reads = true
 
[Service-for-mysql_dev10]
 
user = maxscale
 
password = fixme
 
filters = Hint
 
type = service
 
router = readwritesplit
 
servers = mysql-dev10
 
master_accept_reads = true
 
[Service-for-exchange_DEV]
 
user = maxscale
 
password = fixme
 
filters = Hint
 
type = service
 
router = readwritesplit
 
servers = mysql-dev11, mysql-dev12
 
master_accept_reads = true
 
 
 
 
 
###
 
#       MONITORING & FAILOVER
 
###
 
[MariaDB-Monitor-for-cluster_12]
 
type = monitor
 
module = mariadbmon
 
user = replica
 
password = fixme
 
monitor_interval = 5000
 
failover_timeout = 10
 
auto_failover = false
 
servers = mysql-dev01, mysql-dev02
 
[MariaDB-Monitor-for-cluster_34]
 
type = monitor
 
module = mariadbmon
 
user = replica
 
password = fixme
 
monitor_interval = 5000
 
failover_timeout = 10
 
auto_failover = false
 
servers = mysql-dev03, mysql-dev04
 
[MariaDB-Monitor-for-cluster_78]
 
type = monitor
 
module = mariadbmon
 
user = replica
 
password = fixme
 
monitor_interval = 5000
 
failover_timeout = 10
 
auto_failover = false
 
servers = mysql-dev07, mysql-dev08
 
[MariaDB-Monitor-for-mysql_dev10]
 
type = monitor
 
module = mariadbmon
 
user = replica
 
password = fixme
 
monitor_interval = 5000
 
failover_timeout = 10
 
auto_failover = false
 
servers = mysql-dev10
 
[MariaDB-Monitor-for-exchange_DEV]
 
type = monitor
 
module = mariadbmon
 
user = replica
 
password = fixme
 
monitor_interval = 5000
 
failover_timeout = 10
 
auto_failover = false
 
servers = mysql-dev11, mysql-dev12
 
 
 
 
 
###
 
#       LISTENERS
 
###
 
[Listener-for-cluster_12]
 
address = 0.0.0.0
 
type = listener
 
service = Service-for-cluster_12
 
protocol = MariaDBClient
 
port = 3308
 
[Listener-for-cluster_34]
 
address = 0.0.0.0
 
type = listener
 
service = Service-for-cluster_34
 
protocol = MariaDBClient
 
port = 3309
 
[Listener-for-cluster_78]
 
address = 0.0.0.0
 
type = listener
 
service = Service-for-cluster_78
 
protocol = MariaDBClient
 
port = 3306
 
[Listener-for-mysql_dev10]
 
address = 0.0.0.0
 
type = listener
 
service = Service-for-mysql_dev10
 
protocol = MariaDBClient
 
port = 3307
 
[Listener-for-exchange_DEV]
 
address = 0.0.0.0
 
type = listener
 
service = Service-for-exchange_DEV
 
protocol = MariaDBClient
 
port = 3310
 
 
 
 
 
[MaxAdmin-Service]
 
type = service
 
router = cli
 
 
 
[MaxAdmin-Listener]
 
type = listener
 
service = MaxAdmin-Service
 
protocol = maxscaled
 
socket = default
 
 
 
[Hint]
 
type = filter
 
module = hintfilter
 
 
 
[MaxInfo]
 
type=service
 
router=maxinfo
 
 
 
[MaxInfo Listener]
 
type=listener
 
service=MaxInfo
 
protocol=HTTPD
 
address=127.0.0.1
 
port=9000



 Comments   
Comment by Sergey Smirnov [ 2019-08-16 ]

Cannot reproduce after unload maxinfo (look valgrind result)

Comment by Sergey Smirnov [ 2019-12-19 ]

I tried to use its module again. Bug is actual.
ms_print_maxscale-2.3.15-1.gz

How to reproduce:
I parallel execute and periodic check memory utilization

for i in `seq 1 1000000`; do echo $i; curl --user user:password 127.0.0.1:9000/servers; done
 
for i in `seq 1 1000000`; do echo $i; curl --user user:password 127.0.0.1:9000/services; done
 
for i in `seq 1 1000000`; do echo $i; curl --user user:password 127.0.0.1:9000/monitors; done
 
for i in `seq 1 1000000`; do echo $i; curl --user user:password 127.0.0.1:9000/variables; done

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