---
title: 内存OOM问题现象描述
description: "业务使用内存过多引起内存申请失败。"
url: https://www.hiascend.com/document/detail/zh/canncommercial/latest/maintenref/troubleshooting/troubleshooting_0050.html
sourcePath: /source/zh/canncommercial/900/maintenref/troubleshooting/troubleshooting_0050.html
indexId: e885aba885bb0c5273f4486fb68d7fb3ffb865f0d9ee5c854b505f5da27eb36382
---
# 内存OOM问题现象描述

业务使用内存过多引起内存申请失败。

plog日志中的报错示例如下，该示例中，aclrtMallocPhysical用于申请Device上的物理内存，申请内存失败：

```
[ERROR] DRV(4176881,python3.7):2024-06-29-16:19:28.520.037 [ascend][curpid: 4176881, 4176881][drv][devmm][share_log_read_in_single_module 634]Msg send failed. (ret=-12; devid=0; vfid=0; host_pid=4176881)
[ERROR] DRV(4176881,python3.7):2024-06-29-16:19:28.520.085 [ascend][curpid: 4176881, 4176881][drv][devmm][halMemCreate 3073]<errno:12, 6> Mem create failed. (ret=6; size=20971520; side=1; devid=0)
[ERROR] RUNTIME(4176881,python3.7):2024-06-29-16:19:28.521.874 [npu_driver.cc:5757]4176881 MallocPhysical:[INIT][DEFAULT][drv api]halMemCreate failed. drvRetCode=6.
[ERROR] RUNTIME(4176881,python3.7):2024-06-29-16:19:28.521.933 [api_c.cc:4738]4176881 rtMallocPhysical:[INIT][DEFAULT]ErrCode=207001, desc=[driver error:out of memory], InnerCode=0x7020016
[ERROR] RUNTIME(4176881,python3.7):2024-06-29-16:19:28.521.939 [error_message_manage.cc:53]4176881 FuncErrorReason:[INIT][DEFAULT]report error module_type=3, module_name=EE8888
[ERROR] RUNTIME(4176881,python3.7):2024-06-29-16:19:28.521.947 [error_message_manage.cc:53]4176881 FuncErrorReason:[INIT][DEFAULT]rtMallocPhysical execute failed, reason=[driver error:out of memory]
[ERROR] ASCENDCL(4176881,python3.7):2024-06-29-16:19:28.521.991 [memory.cpp:634]4176881
aclrtMallocPhysical
: [INIT][DEFAULT]malloc physical memory failed, runtime result = 207001
```

若Device侧系统内存不足，从Device导出的syslog日志（{日志导出目录}/{时间戳目录}/message/dev-os-{id}/messages.*）中存在oom关键字，示例如下：

```
(none) kern.info kernel: [144171.324674][T28699] [kbox] catch oom event on cpu 0.
(none) kern.info kernel: [144171.324682][T28699] [kbox] catch oom event, start logging, idx: 2120, time: 2024-06-29 16:19:28.253015
```