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delete 2 vCPU description. #14715

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297aba5
Update size-your-cluster.md
lilyjazz Sep 4, 2023
c8c7623
Update tidb-cloud-performance-reference.md
lilyjazz Sep 4, 2023
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Update scale-tidb-cluster.md
lilyjazz Sep 4, 2023
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5 changes: 2 additions & 3 deletions tidb-cloud/scale-tidb-cluster.md
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Expand Up @@ -20,10 +20,9 @@ For information about how to determine the size of your TiDB cluster, see [Deter

> **Note:**
>
> If the vCPU and RAM size of TiDB or TiKV is set as **2 vCPU, 8 GiB (Beta)** or **4 vCPU, 16 GiB**, note the following restrictions. To bypass these restrictions, you can [increase the vCPU and RAM](#change-vcpu-and-ram) first.
> If the vCPU and RAM size of TiDB or TiKV is set as **4 vCPU, 16 GiB**, note the following restrictions. To bypass these restrictions, you can [increase the vCPU and RAM](#change-vcpu-and-ram) first.
>
> - The node number of TiDB can only be set to 1 or 2, and the node number of TiKV is fixed to 3.
> - 2 vCPU TiDB can only be used with 2 vCPU TiKV, and 2 vCPU TiKV can only be used with 2 vCPU TiDB.
> - 4 vCPU TiDB can only be used with 4 vCPU TiKV, and 4 vCPU TiKV can only be used with 4 vCPU TiDB.
> - TiFlash is unavailable.

Expand Down Expand Up @@ -98,4 +97,4 @@ To change the storage of TiKV or TiFlash, take the following steps:
4. On the **Modify Cluster** page, change the storage of each TiKV or TiFlash node.
5. Review the cluster size in the right pane, and then click **Confirm**.

You can also change the storage of a TiKV or TiFlash node using TiDB Cloud API through the [Modify a TiDB Dedicated cluster](https://docs.pingcap.com/tidbcloud/api/v1beta#tag/Cluster/operation/UpdateCluster) endpoint. Currently, TiDB Cloud API is still in beta. For more information, see [TiDB Cloud API Documentation](https://docs.pingcap.com/tidbcloud/api/v1beta).
You can also change the storage of a TiKV or TiFlash node using TiDB Cloud API through the [Modify a TiDB Dedicated cluster](https://docs.pingcap.com/tidbcloud/api/v1beta#tag/Cluster/operation/UpdateCluster) endpoint. Currently, TiDB Cloud API is still in beta. For more information, see [TiDB Cloud API Documentation](https://docs.pingcap.com/tidbcloud/api/v1beta).
13 changes: 5 additions & 8 deletions tidb-cloud/size-your-cluster.md
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Expand Up @@ -23,17 +23,16 @@ To learn performance test results of different cluster scales, see [TiDB Cloud P

The supported vCPU and RAM sizes include the following:

- 2 vCPU, 8 GiB (Beta)
- 4 vCPU, 16 GiB
- 8 vCPU, 16 GiB
- 16 vCPU, 32 GiB

> **Note:**
>
> If the vCPU and RAM size of TiDB is set as **2 vCPU, 8 GiB (Beta)** or **4 vCPU, 16 GiB**, note the following restrictions:
> If the vCPU and RAM size of TiDB is set as **4 vCPU, 16 GiB**, note the following restrictions:
>
> - The node number of TiDB can only be set to 1 or 2, and the node number of TiKV is fixed to 3.
> - 2 vCPU TiDB can only be used with 2 vCPU TiKV. 4 vCPU TiDB can only be used with 4 vCPU TiKV.
> - 4 vCPU TiDB can only be used with 4 vCPU TiKV.
> - TiFlash is unavailable.

### TiDB node number
Expand Down Expand Up @@ -85,18 +84,17 @@ To learn performance test results of different cluster scales, see [TiDB Cloud P

The supported vCPU and RAM sizes include the following:

- 2 vCPU, 8 GiB (Beta)
- 4 vCPU, 16 GiB
- 8 vCPU, 32 GiB
- 8 vCPU, 64 GiB
- 16 vCPU, 64 GiB

> **Note:**
>
> If the vCPU and RAM size of TiKV is set as **2 vCPU, 8 GiB (Beta)** or **4 vCPU, 16 GiB**, note the following restrictions:
> If the vCPU and RAM size of TiKV is set as **4 vCPU, 16 GiB**, note the following restrictions:
>
> - The node number of TiDB can only be set to 1 or 2, and the node number of TiKV is fixed to 3.
> - 2 vCPU TiKV can only be used with 2 vCPU TiDB. 4 vCPU TiKV can only be used with 4 vCPU TiDB.
> - 4 vCPU TiKV can only be used with 4 vCPU TiDB.
> - TiFlash is unavailable.

### TiKV node number
Expand Down Expand Up @@ -168,7 +166,6 @@ The supported node storage of different TiKV vCPUs is as follows:

| TiKV vCPU | Min node storage | Max node storage | Default node storage |
|:---------:|:----------------:|:----------------:|:--------------------:|
| 2 vCPU | 200 GiB | 500 GiB | 200 GiB |
| 4 vCPU | 200 GiB | 2048 GiB | 500 GiB |
| 8 vCPU | 200 GiB | 4096 GiB | 500 GiB |
| 16 vCPU | 200 GiB | 6144 GiB | 500 GiB |
Expand All @@ -190,7 +187,7 @@ The supported vCPU and RAM sizes include the following:
- 8 vCPU, 64 GiB
- 16 vCPU, 128 GiB

Note that TiFlash is unavailable when the vCPU and RAM size of TiDB or TiKV is set as **2 vCPU, 8 GiB (Beta)** or **4 vCPU, 16 GiB**.
Note that TiFlash is unavailable when the vCPU and RAM size of TiDB or TiKV is set as **4 vCPU, 16 GiB**.

### TiFlash node number

Expand Down
29 changes: 0 additions & 29 deletions tidb-cloud/tidb-cloud-performance-reference.md
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Expand Up @@ -13,35 +13,6 @@ This document provides [Sysbench](https://github.com/akopytov/sysbench) performa

In this document, the transaction models `Read Only`, `Read Write`, and `Write Only` represent read workloads, mixed workloads, and write workloads.

## 2 vCPU performance

Currently, the 2 vCPU support of TiDB and TiKV is still in beta.

Test scales:

- TiDB (2 vCPU, 8 GiB) \* 1; TiKV (2 vCPU, 8 GiB) \* 3
- TiDB (2 vCPU, 8 GiB) \* 2; TiKV (2 vCPU, 8 GiB) \* 3

Test results:

**TiDB (2 vCPU, 8 GiB) \* 1; TiKV (2 vCPU, 8 GiB) \* 3**

| Transaction model | Threads | QPS | TPS | Average latency (ms) | P95 latency (ms) |
|-------------------|---------|----------|--------|----------------------|------------------|
| Read Only | 15 | 3,496.77 | 218.55 | 68.63 | 95.81 |
| Read Write | 5 | 1,545.90 | 77.29 | 64.68 | 94.10 |
| Write Only | 40 | 4,326.57 | 721.10 | 55.47 | 90.78 |

**TiDB (2 vCPU, 8 GiB) \* 2; TiKV (2 vCPU, 8 GiB) \* 3**

Test results:

| Transaction model | Threads | QPS | TPS | Average latency (ms) | P95 latency (ms) |
|-------------------|---------|----------|----------|----------------------|------------------|
| Read Only | 30 | 7,584.08 | 474.00 | 63.29 | 99.33 |
| Read Write | 10 | 2,680.58 | 134.03 | 74.61 | 104.84 |
| Write Only | 80 | 7,618.77 | 1,269.79 | 63.00 | 97.55 |

## 4 vCPU performance

Test scales:
Expand Down
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