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gns相关状态查看
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2024-02-23 19:49:41
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gns相关状态查看

2.1状态信息说明

使用如下命令打印当前GNS状态:

gncli -uroot -e "show engine express status\G"

显示如下（黄色高亮的为关键信息及其说明）：

*************************** 1. mw ***************************

Type: memory

Name: memory statistic

Status:-------------------------------------------------------------------

MALLOC:

1109394928 ( 1058.0 MiB) Bytes in use by

application

//gbased占用内存

MALLOC:

+

0 (

0.0 MiB) Bytes in page heap freelist

MALLOC:

+

15619840 (

14.9 MiB) Bytes in central cache freelist

MALLOC:

+

49152 (

0.0 MiB) Bytes in transfer cache freelist

MALLOC:

+

37438224 (

35.7 MiB) Bytes in thread cache freelists

MALLOC:

+

7385248 (

7.0 MiB) Bytes in malloc metadata

MALLOC:

—

MALLOC:

=

1169887392 ( 1115.7 MiB) Actual memory used (physical +

swap)

MALLOC:

+

1859616768 ( 1773.5 MiB) Bytes released to OS (aka unmapped)

MALLOC:

—

MALLOC:

=

3029504160 ( 2889.2 MiB) Virtual address space used

MALLOC:

MALLOC:

22464

Spans in use

MALLOC:

607

Thread heaps in use

MALLOC:

8192

Tcmalloc page size

Call ReleaseFreeMemory。to release freelist memory to the OS (via madvise。). Bytes released to the OS take up virtual address space but no physical memory.

*************************** 2. row ***************************

Type: DataSession

Name: DataSession Statistics

Status: DataSessionManager

Send buffer size: 0

Initiated Connections: 10

//gns发送队列中缓存的数据

〃当前节点作为client端建立的TCP连接，应

 

等于集群节点数

1: Addr: 10.10.10.29, Status: PACKET_FINISHED, Sessions: 18, Sent:

7487290253 Bytes, Recv: 440737 Bytes, Queued Sessions: 0

2: Addr: 10.10.10.46, Status: PACKET_FINISHED, Sessions: 197, Sent:

22835840951 Bytes, Recv: 2614679 Bytes, Queued Sessions: 0

3: Addr: 10.10.10.47, Status: PACKET_FINISHED, Sessions: 197, Sent:

61929505793 Bytes, Recv: 2640409 Bytes, Queued Sessions: 0

4: Addr: 10.10.10.48, Status: PACKET_FINISHED, Sessions: 18, Sent:

3678259608 Bytes, Recv: 432257 Bytes, Queued Sessions: 0

5: Addr: 10.10.10.49, Status: PACKET_FINISHED, Sessions: 18, Sent:

6946830361 Bytes, Recv: 434753 Bytes, Queued Sessions: 0

6: Addr: 10.10.10.50, Status: PACKET_FINISHED, Sessions: 18, Sent:

5303228244 Bytes, Recv: 434113 Bytes, Queued Sessions: 0

7: Addr: 10.10.10.51, Status: PACKET_FINISHED, Sessions: 18, Sent:

3679509021 Bytes, Recv: 432289 Bytes, Queued Sessions: 0

8: Addr: 10.10.10.53, Status: PACKET_FINISHED, Sessions: 18, Sent:

7024717656 Bytes, Recv: 434817 Bytes, Queued Sessions: 0

9: Addr: 10.10.10.54, Status: PACKET_FINISHED, Sessions: 18, Sent:

3657383329 Bytes, Recv: 431617 Bytes, Queued Sessions: 0

10: Addr: 10.10.10.56, Status: PACKET_FINISHED, Sessions: 18, Sent:

6973918734 Bytes, Recv: 439720 Bytes, Queued Sessions: 0

Accepted Connections: 10            〃当前节点作为server端建立的TCP连接，应

等于集群节点数

  1. : Addr: 10.10.10.29, Status: PACKET_FINISHED, Sessions: 18, Sent: 431201 Bytes, Recv: 7488438989 Bytes, Queued Sessions: 0
  2. : Addr: 10.10.10.46, Status: PACKET_FINISHED, Sessions: 18, Sent:

429211 Bytes, Recv: 7853420367 Bytes, Queued Sessions: 0

  1. : Addr: 10.10.10.47, Status: PACKET_FINISHED, Sessions: 18, Sent:

429883 Bytes, Recv: 7816912470 Bytes, Queued Sessions: 0

  1. : Addr: 10.10.10.48, Status: PACKET_FINISHED, Sessions: 18, Sent:

429627 Bytes, Recv: 8108394854 Bytes, Queued Sessions: 0

  1. : Addr: 10.10.10.49, Status: PACKET_FINISHED, Sessions: 18, Sent:

430363 Bytes, Recv: 7752634602 Bytes, Queued Sessions: 0

  1. : Addr: 10.10.10.50, Status: PACKET_FINISHED, Sessions: 18, Sent:

429883 Bytes, Recv: 7732659722 Bytes, Queued Sessions: 0

  1. : Addr: 10.10.10.51, Status: PACKET_FINISHED, Sessions: 18, Sent:

430587 Bytes, Recv: 7721191901 Bytes, Queued Sessions: 0

  1. : Addr: 10.10.10.53, Status: WAITING_BODY, Sessions: 18, Sent:

430235 Bytes, Recv: 7624733900 Bytes, Queued Sessions: 0

  1. : Addr: 10.10.10.54, Status: PACKET_FINISHED, Sessions: 197,

Sent:     2564403   Bytes,   Recv:  27087895679    Bytes,   Queued   Sessions:    0

  1. : Addr: 10.10.10.56, Status: PACKET_FINISHED, Sessions: 198,

Sent:     2586253   Bytes,   Recv:  59579089002    Bytes,   Queued   Sessions:    0

Total Sent: 129525075596, Total Recv: 148774106877 *************************** 3. row ***************************

Type: sis memory

Name: sis memory statistics

Status: SISRecordDispatcher: peak: 1.44GB, current: 334.50MB, TmpMatBuf: peak: 0, current: 0, ByteQueue: peak: 77.43MB, current: 19.57MB

*************************** 4. row ***************************

Type: dts info

Name: dts statistics

//CPU核数2倍个

Status: Replication DataSession Helper, active actors: 32

RepActor

0

RepActor:    sessions:

28, reps

28, thds:

RepActor:    sessions:

29, reps

29, thds:

RepActor:    sessions:

29, reps

29, thds:

RepActor:    sessions:

27, reps

27, thds:

RepActor:    sessions:

30, reps

30, thds:

RepActor:    sessions:

31, reps

31, thds:

RepActor:    sessions:

29, reps

29, thds:

RepActor:    sessions:

32, reps

32, thds:

RepActor:    sessions:

32, reps

32, thds:

RepActor:    sessions:

30, reps

30, thds:

 

1

2

17

17

19

19

20

8

9

20

19

3

4

5

6

7

18

17

18

: RepActor: sessions:

30, reps

: RepActor: sessions:

31, reps

: RepActor: sessions:

31, reps

: RepActor: sessions:

30, reps

: RepActor: sessions:

28, reps

: RepActor: sessions:

28, reps

: RepActor: sessions:

28, reps

: RepActor: sessions:

28, reps

: RepActor: sessions:

27, reps

: RepActor: sessions:

27, reps

: RepActor: sessions:

26, reps

 

10

11

12

18

19

20

13

14

15

16

17

  1. thds:   18
  2. thds:   19

31,    thds: 18

30,   thds:

28,   thds:

28,   thds:

28,   thds:

28,   thds:

20

16

16

15

15

27,    thds: 16

27,    thds: 16

26,    thds: 14

 

21

22

23

24

25

26

27

28

29

30

31

sessions sessions sessions sessions sessions sessions sessions sessions sessions sessions sessions

25,    thds: 14

  1. thds:   15

24,    thds: 14

24,    thds: 14

  1. thds:   15
  2. thds:   16
  1. thds:   15
  1. thds:   18
  1. thds:   17

27,    thds: 17

26,    thds: 16

25, reps

  1. reps

24, reps

24, reps

  1. reps
  2. reps
  1. reps
  1. reps
  1. reps

27, reps

26, reps

RepActor: RepActor: RepActor: RepActor: RepActor: RepActor: RepActor: RepActor: RepActor: RepActor: RepActor:

 

 

CommonTaskQueue: (gbased-rep) 〃DTS处理接收到的数据的任务队列

Total executors: 32 //CPU 核数 2 倍个 executors

Total tasks: 0       〃当前CommonTaskQueue中的任务数，每个非空的Tasks

group 算 1 个 task

Total weight: 7899806        〃当前CommonTaskQueue中的任务的权重，可以认

为是等待处理的任务占用的内存大小，单位是byte

Tasks groups: 837 //Tasks group可以认为是一种特殊的task，它可以包含 多个子task，这些子task会串行执行

[0]:

TaskGroup[0]:

Size: 0

Weight: 0

[1]:

TaskGroup[1]:

Size: 0

Weight: 0

[8]:

TaskGroup[8]:

Size: 0

Weight: 0

[21]:

TaskGroup [21]:

Size: 0

Weight: 0

[25]:

TaskGroup[25]:

Size: 0

Weight: 0

[33]:

TaskGroup[33]:

Size: 0

Weight: 0

[936]:

TaskGro up[936]

: Size: 0

Weight: 0

[937]:

TaskGro up[937]

: Size: 0

Weight: 0

Total tasks in groups: 24          //task group 中包含的 task 的总数

Total weight in groups: 7189480 //task group 中包含的 task 的总权重

Total task types: 4         〃各种不同类型task的个数

[RepTaskCheckAsyncStatus]:               0

[RepTaskCloseRep]:              0

[RepTaskFowardDC]:           0

[RepTaskRecvData]:             23

2.2应用实例

2. 2. 1 集群的数据节点内存占用过多

可以通过查看

MALLOC:    1109394928  ( 1058. 0 MiB) Bytes in use by application

来确定数据节点进程共占用了多少内存，如果确实是此进程占用了很多内 存，可以进一步查看

Send buffer size: 0

和

Total weight: 7899806

来确认是否是由于发送或者接受队列缓存占用过多造成。

2. 2. 2 查看集群各节点数据传输的负载状况

可以通过查看各个数据节点的

Send buffer size: 0

和

Total weight: 7899806

来确认各个节点哪个是收发数据的瓶颈。

2. 2. 3 集群执行SQL时卡住

可以通过查看各个数据节点的

Send buffer size: 0

和

Total weight: 7899806

来确认是否是由于节点间的数据传输造成的。如果各个节点都是0,只有 一个节点数值很大，则可以断定出问题的就是那个节点，然后再进行进一步分 析。

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