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鲲鹏系统性能方法论分析工具使用示例

示例均为RPM包安装使用，以在鲲鹏920系列服务器上使用工具为例，展示如何进行服务器系统性能采集和分析

图1 整体流程
  1. 执行采集命令。
    1
    ksys collect -d 10 -i 1 -o /home/test/
    • 采集时间指定为10秒，采样间隔指定为1秒，指定在“/home/test/”目录下生成JSON文件。
    • 采集结束后会直接打印Summary数据，但不会保存Summary数据到JSON文件中。

    返回信息片段如下：

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    Data collection starts. You can press Ctrl+C to stop the task.
Starting to parse the data. This may take some time. You can press Ctrl+C to forcibly stop the task.
======================================================================CPU Metrics======================================================================
Common Microarchitecture Metrics Summary Data
+------+--------------+------+------+----------+----------+----------+----------+-----------+-----------+---------+
| IPC  | PATH LENGTH  | MPKI | BPKI | L1D MPKI | L1I MPKI | L2D MPKI | L2I MPKI | DTLB MPKI | ITLB MPKI | CPU-NUM |
+------+--------------+------+------+----------+----------+----------+----------+-----------+-----------+---------+
| 0.33 | 101152422747 | 3.62 | 1.22 |     3.66 |     5.88 |     2.59 |     0.43 |       4.7 |      0.27 |     256 |
+------+--------------+------+------+----------+----------+----------+----------+-----------+-----------+---------+

Topdown Summary Data
+----------------------------+-------+
|           Metric           | Value |
+----------------------------+-------+
| Retiring(%)                |  5.83 |
| Frontend Bound(%)          | 11.24 |
|   Fetch Latency Bound(%)   | 10.86 |
|   Fetch Bandwidth Bound(%) |  0.38 |
| Bad Speculation(%)         |  0.73 |
|   Branch Mispredicts(%)    |  0.58 |
|   Machine Clears(%)        |  0.15 |
| Backend Bound(%)           |  82.2 |
|   Core Bound(%)            | 39.48 |
|   Memory Bound(%)          | 42.72 |
| CPU-NUM                    |   256 |
+----------------------------+-------+

OS Metrics Summary Data
+------------------+------------+-------------+---------+
| context-switches | migrations | page-faults | CPU-NUM |
+------------------+------------+-------------+---------+
|           309603 |       2277 |      200448 |     256 |
+------------------+------------+-------------+---------+

INSTRUCTION Summary Data
+----------------------------------+-------+
|              Metric              | Value |
+----------------------------------+-------+
| Memory(%)                        | 26.94 |
|   Load(%)                        | 23.41 |
|   Store(%)                       |  3.53 |
| Integer(%)                       | 49.53 |
| Floating Point(%)                |  0.02 |
| Advanced SIMD(%)                 |  0.13 |
| Crypto(%)                        |   0.0 |
| Branches(%)                      | 23.24 |
|   Immediate(%)                   | 21.27 |
|   Return(%)                      |  0.84 |
|   Indirect(%)                    |  1.14 |
| Barriers(%)                      |  0.08 |
|   Instruction Synchronization(%) |  0.01 |
|   Data Synchronization(%)        |   0.0 |
|   Data Memory(%)                 |  0.06 |
| Not Retired(%)                   |  0.06 |
+----------------------------------+-------+

Load_avg Summary Data
+--------------+--------------+---------------+
| recent 1 min | recent 5 min | recent 15 min |
+--------------+--------------+---------------+
|         0.56 |         0.44 |          0.35 |
+--------------+--------------+---------------+

Softirqs Summary Data
+----------+----------+---------+---------+---------+
| NET_TX/s | NET_RX/s | BLOCK/s | SCHED/s | CPU-NUM |
+----------+----------+---------+---------+---------+
|        0 |        0 |       0 |       4 |     256 |
+----------+----------+---------+---------+---------+

CPU_stat Summary Data
+----------------+--------------+-------------------+
| ctx_switches/s | interrupts/s | soft_interrupts/s |
+----------------+--------------+-------------------+
|        24710.0 |      58114.0 |            2207.0 |
+----------------+--------------+-------------------+

CPU_freq Summary Data
+--------------+----------+----------+
| current(MHz) | min(MHz) | max(MHz) |
+--------------+----------+----------+
|      2899.65 |    400.0 |   2900.0 |
+--------------+----------+----------+

CPU_percent Summary Data
+-------+-------+---------+-------+---------+------+----------+--------+--------+-------------+
| %user | %nice | %system | %idle | %iowait | %irq | %softirq | %steal | %guest | %guest_nice |
+-------+-------+---------+-------+---------+------+----------+--------+--------+-------------+
|  0.12 |   0.0 |    0.16 | 98.74 |    0.01 | 0.13 |     0.01 |    0.0 |    0.0 |         0.0 |
+-------+-------+---------+-------+---------+------+----------+--------+--------+-------------+

=================================================================Memory Access Metrics=================================================================
DDRC Summary Data
+---------------------------------+--------+-----------------+-----------------+
|              DEVICE             |  NUMA  | ddrc_rd_bw MB/s | ddrc_wr_bw MB/s |
+---------------------------------+--------+-----------------+-----------------+
| DDRC DEVICE hisi_sccl3_ddrc0_0  | Node 0 |           22.28 |            9.12 |
| DDRC DEVICE hisi_sccl3_ddrc0_1  | Node 0 |           22.67 |            9.46 |
| DDRC DEVICE hisi_sccl3_ddrc2_0  | Node 0 |           22.17 |             8.7 |
| DDRC DEVICE hisi_sccl3_ddrc2_1  | Node 0 |           22.59 |            9.55 |
| DDRC DEVICE hisi_sccl3_ddrc3_0  | Node 0 |           22.67 |            9.22 |
| DDRC DEVICE hisi_sccl3_ddrc3_1  | Node 0 |           22.53 |            9.48 |
| DDRC DEVICE hisi_sccl3_ddrc5_0  | Node 0 |           22.44 |            8.76 |
| DDRC DEVICE hisi_sccl3_ddrc5_1  | Node 0 |            22.3 |            9.09 |
| DDRC DEVICE hisi_sccl1_ddrc0_0  | Node 1 |           20.33 |           12.86 |
| DDRC DEVICE hisi_sccl1_ddrc0_1  | Node 1 |           20.02 |           13.66 |
| DDRC DEVICE hisi_sccl1_ddrc2_0  | Node 1 |           20.93 |           13.06 |
| DDRC DEVICE hisi_sccl1_ddrc2_1  | Node 1 |           22.33 |           20.36 |
| DDRC DEVICE hisi_sccl1_ddrc3_0  | Node 1 |           19.64 |           12.99 |
| DDRC DEVICE hisi_sccl1_ddrc3_1  | Node 1 |           19.87 |           13.06 |
| DDRC DEVICE hisi_sccl1_ddrc5_0  | Node 1 |           20.06 |           13.41 |
| DDRC DEVICE hisi_sccl1_ddrc5_1  | Node 1 |           20.19 |           14.26 |
| DDRC DEVICE hisi_sccl11_ddrc0_0 | Node 2 |           26.54 |           12.26 |
| DDRC DEVICE hisi_sccl11_ddrc0_1 | Node 2 |           26.55 |           11.85 |
| DDRC DEVICE hisi_sccl11_ddrc2_0 | Node 2 |           27.08 |           16.91 |
| DDRC DEVICE hisi_sccl11_ddrc2_1 | Node 2 |           27.01 |           12.28 |
| DDRC DEVICE hisi_sccl11_ddrc3_0 | Node 2 |           27.49 |           20.73 |
| DDRC DEVICE hisi_sccl11_ddrc3_1 | Node 2 |           26.63 |           12.12 |
| DDRC DEVICE hisi_sccl11_ddrc5_0 | Node 2 |           26.78 |           12.31 |
| DDRC DEVICE hisi_sccl11_ddrc5_1 | Node 2 |           26.88 |           11.87 |
| DDRC DEVICE hisi_sccl9_ddrc0_0  | Node 3 |           11.87 |            5.77 |
| DDRC DEVICE hisi_sccl9_ddrc0_1  | Node 3 |           11.57 |             6.0 |
| DDRC DEVICE hisi_sccl9_ddrc2_0  | Node 3 |           11.86 |            5.88 |
| DDRC DEVICE hisi_sccl9_ddrc2_1  | Node 3 |           11.45 |            5.78 |
| DDRC DEVICE hisi_sccl9_ddrc3_0  | Node 3 |           11.64 |            5.89 |
| DDRC DEVICE hisi_sccl9_ddrc3_1  | Node 3 |           11.91 |            6.17 |
| DDRC DEVICE hisi_sccl9_ddrc5_0  | Node 3 |           11.56 |            5.25 |
| DDRC DEVICE hisi_sccl9_ddrc5_1  | Node 3 |           11.85 |            5.96 |
+---------------------------------+--------+-----------------+-----------------+
...

=======================================================================IO Metrics======================================================================
PCIE Summary Data
------------------------------------------------------------------------------------------------
Note:
    The bandwidth on the PCIe device side differ from the commonly understood bandwidth.
    For more detailed descriptions, please refer to the README.md.

+--------------------------------------------------------------+---------------+---------------+
|                         PCIE DEVICE                          | rx_rd_bw MB/s | rx_wr_bw MB/s |
+--------------------------------------------------------------+---------------+---------------+
| PCIE DEVICE 03:00.0 Signal processing controller: Huawei     |           0.0 |           0.0 |
| Technologies Co., Ltd. iBMA Virtual Network Adapter (rev 01) |               |               |
+--------------------------------------------------------------+---------------+---------------+
| PCIE DEVICE 02:00.0 VGA compatible controller: Huawei        |           0.0 |           0.0 |
| Technologies Co., Ltd. Hi171x Series [iBMC Intelligent       |               |               |
| Management system chip w/VGA support] (rev 01)               |               |               |
+--------------------------------------------------------------+---------------+---------------+

PA Summary Data
-----------------------------------------------------------------
Note:
    PA (Protocol Adapter) can be used to collect CPU-CPU and CPU-GPU bandwidth.
    For more detailed descriptions, please refer to the README.md.

+---------------------------+-----------------+-----------------+
|         PA DEVICE         | PA2Ring_bw MB/s | Ring2PA_bw MB/s |
+---------------------------+-----------------+-----------------+
| PA DEVICE hisi_sicl8_pa0  |             0.0 |             0.0 |
| PA DEVICE hisi_sicl0_pa0  |             0.0 |             0.0 |
| PA DEVICE hisi_sicl10_pa0 |          234.47 |          102.51 |
| PA DEVICE hisi_sicl2_pa0  |           194.2 |          125.32 |
+---------------------------+-----------------+-----------------+

...
...
...

Data saved successfully at /home/test/2025_08_14_15_17_25_report.json

    采集完成后会生成终端报告和JSON性能数据文件（“/home/test/2025_08_14_15_17_25_report.json”）。终端报告展示CPU、访存等多维度指标，可以观察到当前服务器上下文切换频率ctx_switches/s较高为24710.0，DDRC带宽较低在0 MB/s-30 MB/s之间，说明当前环境执行了计算密集型业务。

  2. 对生成的性能数据文件进行分析，生成Excel报告。
    1
    ksys report -i /home/test/2025_08_14_15_17_25_report.json -o /home/test/
    • 2025_08_14_15_17_25_report.json为通过ksys collect命令生成的JSON文件。
    • 分析结束后会直接打印Summary数据，并且和时序数据一起保存至Excel文件中。
    • 时序数据绘制成折线图或者面积图展示，各个图表之间时间线对齐。

    返回信息片段如下：

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    Analyzing system data... Please wait.
======================================================================CPU Metrics======================================================================
Common Microarchitecture Metrics Summary Data
+------+--------------+------+------+----------+----------+----------+----------+-----------+-----------+---------+
| IPC  | PATH LENGTH  | MPKI | BPKI | L1D MPKI | L1I MPKI | L2D MPKI | L2I MPKI | DTLB MPKI | ITLB MPKI | CPU-NUM |
+------+--------------+------+------+----------+----------+----------+----------+-----------+-----------+---------+
| 0.33 | 101152422747 | 3.62 | 1.22 |     3.66 |     5.88 |     2.59 |     0.43 |       4.7 |      0.27 |     256 |
+------+--------------+------+------+----------+----------+----------+----------+-----------+-----------+---------+

Topdown Summary Data
+----------------------------+-------+
|           Metric           | Value |
+----------------------------+-------+
| Retiring(%)                |  5.83 |
| Frontend Bound(%)          | 11.24 |
|   Fetch Latency Bound(%)   | 10.86 |
|   Fetch Bandwidth Bound(%) |  0.38 |
| Bad Speculation(%)         |  0.73 |
|   Branch Mispredicts(%)    |  0.58 |
|   Machine Clears(%)        |  0.15 |
| Backend Bound(%)           |  82.2 |
|   Core Bound(%)            | 39.48 |
|   Memory Bound(%)          | 42.72 |
| CPU-NUM                    |   256 |
+----------------------------+-------+

OS Metrics Summary Data
+------------------+------------+-------------+---------+
| context-switches | migrations | page-faults | CPU-NUM |
+------------------+------------+-------------+---------+
|           309603 |       2277 |      200448 |     256 |
+------------------+------------+-------------+---------+

INSTRUCTION Summary Data
+----------------------------------+-------+
|              Metric              | Value |
+----------------------------------+-------+
| Memory(%)                        | 26.94 |
|   Load(%)                        | 23.41 |
|   Store(%)                       |  3.53 |
| Integer(%)                       | 49.53 |
| Floating Point(%)                |  0.02 |
| Advanced SIMD(%)                 |  0.13 |
| Crypto(%)                        |   0.0 |
| Branches(%)                      | 23.24 |
|   Immediate(%)                   | 21.27 |
|   Return(%)                      |  0.84 |
|   Indirect(%)                    |  1.14 |
| Barriers(%)                      |  0.08 |
|   Instruction Synchronization(%) |  0.01 |
|   Data Synchronization(%)        |   0.0 |
|   Data Memory(%)                 |  0.06 |
| Not Retired(%)                   |  0.06 |
+----------------------------------+-------+

Load_avg Summary Data
+--------------+--------------+---------------+
| recent 1 min | recent 5 min | recent 15 min |
+--------------+--------------+---------------+
|         0.56 |         0.44 |          0.35 |
+--------------+--------------+---------------+

Softirqs Summary Data
+----------+----------+---------+---------+---------+
| NET_TX/s | NET_RX/s | BLOCK/s | SCHED/s | CPU-NUM |
+----------+----------+---------+---------+---------+
|        0 |        0 |       0 |       4 |     256 |
+----------+----------+---------+---------+---------+

CPU_stat Summary Data
+----------------+--------------+-------------------+
| ctx_switches/s | interrupts/s | soft_interrupts/s |
+----------------+--------------+-------------------+
|        24710.0 |      58114.0 |            2207.0 |
+----------------+--------------+-------------------+

CPU_freq Summary Data
+--------------+----------+----------+
| current(MHz) | min(MHz) | max(MHz) |
+--------------+----------+----------+
|      2899.65 |    400.0 |   2900.0 |
+--------------+----------+----------+

CPU_percent Summary Data
+-------+-------+---------+-------+---------+------+----------+--------+--------+-------------+
| %user | %nice | %system | %idle | %iowait | %irq | %softirq | %steal | %guest | %guest_nice |
+-------+-------+---------+-------+---------+------+----------+--------+--------+-------------+
|  0.12 |   0.0 |    0.16 | 98.74 |    0.01 | 0.13 |     0.01 |    0.0 |    0.0 |         0.0 |
+-------+-------+---------+-------+---------+------+----------+--------+--------+-------------+

...
...
...

Save statistics and time series data to an Excel file. Please wait.
The report has been saved to /home/test/2025_08_14_15_58_18_report.xlsx

    分析任务完成后会生成终端报告和Excel文件（“/home/test/2025_08_14_15_17_25_report.json”），其中Excel文件中包含多维度的时序数据（CPU维度、设备维度等），并且会生成对应的可视化时序图。

  3. 执行对比命令对比业务两次采集前后的性能差异，并生成对比报告。
    1
    ksys diff -i /home/test/2025_08_14_15_17_25_report.json /home/test/2025_08_14_16_11_28_report.json -o /home/test

    2025_08_14_15_17_25_report.json、2025_08_14_16_11_28_report.json为通过ksys collect命令生成的JSON文件， 对比后的数据会保存在“/home/test/”目录下的Excel文件中。

    返回信息片段如下：

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    ======================================================================System Info======================================================================
System Architecture diff:
+--------------+-------------------------------+-------------------------------+------+
|    Metric    |             Before            |             After             | Diff |
+--------------+-------------------------------+-------------------------------+------+
| Cpu Type     | Kunpeng920 high-performance   | Kunpeng920 high-performance   | N/A  |
| Model Name   | HUAWEI Kunpeng 920 V200 7270Z | HUAWEI Kunpeng 920 V200 7270Z | N/A  |
| Vendor ID    | HiSilicon                     | HiSilicon                     | N/A  |
| Hyper Thread | True                          | True                          | N/A  |
| CPU-NUM      |                           256 |                           256 | N/A  |
+--------------+-------------------------------+-------------------------------+------+

======================================================================CPU Metrics======================================================================
Common Microarchitecture Metrics diff:
+-------------+--------------+--------------+---------+
|    Metric   |    Before    |    After     |   Diff  |
+-------------+--------------+--------------+---------+
| IPC         |         0.33 |         0.33 | +0.00%  |
| PATH LENGTH | 101152422747 | 126264627429 | +24.83% |
| MPKI        |         3.62 |         3.18 | -12.15% |
| BPKI        |         1.22 |         0.91 | -25.41% |
| L1D MPKI    |         3.66 |         3.46 | -5.46%  |
| L1I MPKI    |         5.88 |         4.49 | -23.64% |
| L2D MPKI    |         2.59 |         2.13 | -17.76% |
| L2I MPKI    |         0.43 |         0.25 | -41.86% |
| DTLB MPKI   |          4.7 |         3.37 | -28.30% |
| ITLB MPKI   |         0.27 |         0.16 | -40.74% |
+-------------+--------------+--------------+---------+

Topdown diff:
+----------------------------+--------+-------+---------+
|           Metric           | Before | After |   Diff  |
+----------------------------+--------+-------+---------+
| Retiring(%)                |   5.83 |  5.06 | -13.21% |
| Frontend Bound(%)          |  11.24 |  8.31 | -26.07% |
|   Fetch Bandwidth Bound(%) |   0.38 |  0.49 | +28.95% |
|   Fetch Latency Bound(%)   |  10.86 |  7.82 | -27.99% |
| Bad Speculation(%)         |   0.73 |  0.94 | +28.77% |
|   Branch Mispredicts(%)    |   0.58 |  0.72 | +24.14% |
|   Machine Clears(%)        |   0.15 |  0.22 | +46.67% |
| Backend Bound(%)           |   82.2 | 85.69 | +4.25%  |
|   Core Bound(%)            |  39.48 | 38.03 | -3.67%  |
|   Memory Bound(%)          |  42.72 | 47.66 | +11.56% |
+----------------------------+--------+-------+---------+

OS Metrics diff:
+------------------+--------+--------+---------+
|      Metric      | Before | After  |   Diff  |
+------------------+--------+--------+---------+
| context-switches | 309603 | 313974 | +1.41%  |
| migrations       |   2277 |   2652 | +16.47% |
| page-faults      | 200448 | 120183 | -40.04% |
+------------------+--------+--------+---------+

INSTRUCTION diff:
+----------------------------------+--------+-------+---------+
|              Metric              | Before | After |   Diff  |
+----------------------------------+--------+-------+---------+
| Memory(%)                        |  26.94 | 26.86 | -0.30%  |
|   Load(%)                        |  23.41 | 24.02 | +2.61%  |
|   Store(%)                       |   3.53 |  2.83 | -19.83% |
| Integer(%)                       |  49.53 |  50.1 | +1.15%  |
| Floating Point(%)                |   0.02 |  0.03 | +50.00% |
| Advanced SIMD(%)                 |   0.13 |  0.13 | +0.00%  |
| Crypto(%)                        |    0.0 |   0.0 | +0.00%  |
| Branches(%)                      |  23.24 | 22.74 | -2.15%  |
|   Immediate(%)                   |  21.27 | 21.24 | -0.14%  |
|   Return(%)                      |   0.84 |  0.66 | -21.43% |
|   Indirect(%)                    |   1.14 |  0.83 | -27.19% |
| Barriers(%)                      |   0.08 |  0.07 | -12.50% |
|   Instruction Synchronization(%) |   0.01 |  0.01 | +0.00%  |
|   Data Synchronization(%)        |    0.0 |   0.0 | +0.00%  |
|   Data Memory(%)                 |   0.06 |  0.06 | +0.00%  |
| Not Retired(%)                   |   0.06 |  0.06 | +0.00%  |
+----------------------------------+--------+-------+---------+

Load_avg diff:
+---------------+--------+-------+---------+
|     Metric    | Before | After |   Diff  |
+---------------+--------+-------+---------+
| recent 1 min  |   0.56 |   0.4 | -28.57% |
| recent 5 min  |   0.44 |  0.48 | +9.09%  |
| recent 15 min |   0.35 |  0.45 | +28.57% |
+---------------+--------+-------+---------+

Softirqs diff:
+----------+--------+-------+---------+
|  Metric  | Before | After |   Diff  |
+----------+--------+-------+---------+
| NET_TX/s |      0 |     0 | +0.00%  |
| NET_RX/s |      0 |     0 | +0.00%  |
| BLOCK/s  |      0 |     0 | +0.00%  |
| SCHED/s  |      4 |     3 | -25.00% |
+----------+--------+-------+---------+

CPU_stat diff:
+-------------------+---------+---------+---------+
|       Metric      |  Before |  After  |   Diff  |
+-------------------+---------+---------+---------+
| ctx_switches/s    | 24710.0 | 23522.0 | -4.81%  |
| interrupts/s      | 58114.0 | 55823.0 | -3.94%  |
| soft_interrupts/s |  2207.0 |  1702.0 | -22.88% |
+-------------------+---------+---------+---------+

CPU_freq diff:
+--------------+---------+---------+--------+
|    Metric    |  Before |  After  |  Diff  |
+--------------+---------+---------+--------+
| current(MHz) | 2899.65 | 2899.65 | +0.00% |
| min(MHz)     |   400.0 |   400.0 | +0.00% |
| max(MHz)     |  2900.0 |  2900.0 | +0.00% |
+--------------+---------+---------+--------+

CPU_percent diff:
+-------------+--------+-------+----------+
|    Metric   | Before | After |   Diff   |
+-------------+--------+-------+----------+
| %user       |   0.12 |  0.08 | -33.33%  |
| %nice       |    0.0 |   0.0 | +0.00%   |
| %system     |   0.16 |  0.17 | +6.25%   |
| %idle       |  98.74 | 98.51 | -0.23%   |
| %iowait     |   0.01 |   0.0 | -100.00% |
| %irq        |   0.13 |  0.14 | +7.69%   |
| %softirq    |   0.01 |  0.01 | +0.00%   |
| %steal      |    0.0 |   0.0 | +0.00%   |
| %guest      |    0.0 |   0.0 | +0.00%   |
| %guest_nice |    0.0 |   0.0 | +0.00%   |
+-------------+--------+-------+----------+

=================================================================Memory Access Metrics=================================================================
DDRC summary diff:
+-----------------------+--------+--------+---------+
|         Metric        | Before | After  |   Diff  |
+-----------------------+--------+--------+---------+
| Total ddrc_rd_bw MB/s | 651.69 | 540.23 | -17.10% |
| Total ddrc_wr_bw MB/s | 344.07 | 283.02 | -17.74% |
+-----------------------+--------+--------+---------+

NUMA NODE0 diff:
+----------+-----------+-----------+---------+
|  Metric  |   Before  |   After   |   Diff  |
+----------+-----------+-----------+---------+
| rx_outer |  740052.0 |  389902.5 | -47.31% |
| rx_sccl  | 1359007.2 | 1281564.6 | -5.70%  |
+----------+-----------+-----------+---------+


...
...
...

========================================================================Top diff=======================================================================
Top diff:
-----------------------------------------------------------------------------------------------------------------
Note:
    At most 20 Top diffs are listed, please check the generated xlsx file for the rest of report.

+-------------+------------------------------+-------------------+----------+----------+----------+-------------+
| Table Group |  Metric Type/Metric Device   |       Metric      |  Before  |  After   |   Diff   | Diff(value) |
+-------------+------------------------------+-------------------+----------+----------+----------+-------------+
| NUMA        | NUMA NODE2                   | rx_sccl           | 695016.9 | 209223.9 | -69.90%  |    485793.0 |
| NUMA        | NUMA NODE3                   | rx_outer          | 266775.6 | 690445.5 | +158.81% |    423669.9 |
| Miss        | Miss Latency L2 Miss Latency | cycles_max        |     2507 |    11460 | +357.12% |        8953 |
| IO_info     | IO_info Summary              | Total rkB/s       |  1288.25 |  2723.15 | +111.38% |      1434.9 |
| IO_info     | IO_info Summary              | Total wkB/s       |  1395.23 |   681.08 | -51.19%  |      714.15 |
| IO_info     | IO_info IO Device sda3       | rkB/s             |   429.15 |   907.45 | +111.45% |       478.3 |
| IO_info     | IO_info IO Device dm-0       | rkB/s             |   429.15 |   907.45 | +111.45% |       478.3 |
| IO_info     | IO_info IO Device sda        | rkB/s             |   429.55 |   907.85 | +111.35% |       478.3 |
| Net_info    | Net_info Summary             | Total txpck/s     |     33.4 |      3.4 | -89.82%  |        30.0 |
| Net_info    | Net_info Network Device eno1 | txpck/s           |     33.4 |      3.4 | -89.82%  |        30.0 |
| Net_info    | Net_info Summary             | Total txkB/s      |    26.31 |     0.25 | -99.05%  |       26.06 |
| Net_info    | Net_info Network Device eno1 | txkB/s            |    26.31 |     0.25 | -99.05%  |       26.06 |
| Net_info    | Net_info Summary             | Total rxpck/s     |     30.6 |     5.71 | -81.34%  |       24.89 |
| CPU_percent | CPU_percent                  | %iowait           |     0.01 |      0.0 | -100.00% |        0.01 |
| INSTRUCTION | INSTRUCTION                  | Floating Point(%) |     0.02 |     0.03 | +50.00%  |        0.01 |
+-------------+------------------------------+-------------------+----------+----------+----------+-------------+

Data has been saved to /home/test/2025_08_14_16_12_42_diff.xlsx

    对比后的数据保留在“/home/test/2025_08_14_16_12_42_diff.xlsx”文件中。对比分析会比较两次采集的Summary数据，并在最后生成Top diff报告，用于比较差异最大的指标，本次对比中，可以发现两次采集时的Miss时延差距较大。