geedge-jira/md/OMPUB-840.md

# M-POC中6Gbps左右流量sapp丢包

| ID | Creation Date | Assignee | Status |
|----|----------------|----------|--------|
| OMPUB-840 | 2023-03-08T14:22:53.000+0800 | 刘学利 | 已解决 |


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TSG部署TSG22.12版本
通过monit_stream -lHs查看，流量5-6Gbps时sapp丢包
 !image-2023-03-08-14-22-45-918.png|thumbnail! **luqiuwen** commented on *2023-03-08T14:42:11.717+0800*:

登录系统检查状态，发现部分cpu的sys较高，约60%左右。

!image-2023-03-08-14-42-46-992.png!

发现大部分cpu在memmove时触发缺页中断，造成sys较高。memmove是由BGP解析层插件调用的。

经了解，此时现场正在进行Psiphon阻断测试，猜测由于其他端口（或IP地址）已被阻断，Psiphon正在利用BGP协议的端口逃逸检测，进入BGP解析层的流量较多，进而触发了该问题。

 



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**yangwei** commented on *2023-07-06T11:23:29.582+0800*:

暂时关闭该issue，待观察



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**yangyubo** commented on *2023-07-19T10:53:48.781+0800*:

P19现场多台设备一直存在单个核cpu占用过高导致抖动丢包的情况，流量很少时也存在该问题。
以TWA站点10.10.30.164为例，丢包时 43，95号核cpu占用较高，火焰图如下：
43号核
 !screenshot-1.png|thumbnail! 
95号核
 !screenshot-2.png|thumbnail! 
当前全平台关闭BGP插件，持续观察丢包情况。



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**zhengchao** commented on *2023-07-19T10:54:14.189+0800*:

reopen by P19



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**gitlab** commented on *2023-07-19T18:56:23.614+0800*:

[刘学利|https://git.mesalab.cn/liuxueli] mentioned this issue in [a commit|https://git.mesalab.cn/MESA_Platform/bgp/-/commit/699f4731a3699b092082d04520a86ec983cdd4a3] of [MESA Platform / bgp|https://git.mesalab.cn/MESA_Platform/bgp] on branch [bugfix-port179-not-bgp-but-cache-payload|https://git.mesalab.cn/MESA_Platform/bgp/-/tree/bugfix-port179-not-bgp-but-cache-payload]:{quote}OMPUB-840: 增强校验BGP协议的逻辑，避免误识别导致CPU消耗{quote}



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**gitlab** commented on *2023-07-19T18:56:40.176+0800*:

[刘学利|https://git.mesalab.cn/liuxueli] mentioned this issue in [a merge request|https://git.mesalab.cn/MESA_Platform/bgp/-/merge_requests/2] of [MESA Platform / bgp|https://git.mesalab.cn/MESA_Platform/bgp] on branch [bugfix-port179-not-bgp-but-cache-payload|https://git.mesalab.cn/MESA_Platform/bgp/-/tree/bugfix-port179-not-bgp-but-cache-payload]:{quote}OMPUB-840: 增强校验BGP协议的逻辑，避免误识别导致CPU消耗{quote}



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**gitlab** commented on *2023-07-19T20:10:54.733+0800*:

[刘学利|https://git.mesalab.cn/liuxueli] mentioned this issue in [a commit|https://git.mesalab.cn/tsg/tsg-os-buildimage/-/commit/76efbe7132fa5198c5ae87e8690a62c79fa2cdc4] of [TSG / tsg-os-buildimage|https://git.mesalab.cn/tsg/tsg-os-buildimage] on branch [update-v23.07-bgp|https://git.mesalab.cn/tsg/tsg-os-buildimage/-/tree/update-v23.07-bgp]:{quote}更新BGP, 修复 OMPUB-840: 增强校验BGP协议的逻辑，避免误识别导致CPU消耗{quote}



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**gitlab** commented on *2023-07-19T20:11:10.264+0800*:

[刘学利|https://git.mesalab.cn/liuxueli] mentioned this issue in [a merge request|https://git.mesalab.cn/tsg/tsg-os-buildimage/-/merge_requests/1580] of [TSG / tsg-os-buildimage|https://git.mesalab.cn/tsg/tsg-os-buildimage] on branch [update-v23.07-bgp|https://git.mesalab.cn/tsg/tsg-os-buildimage/-/tree/update-v23.07-bgp]:{quote}更新BGP, 修复 OMPUB-840: 增强校验BGP协议的逻辑，避免误识别导致CPU消耗{quote}



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**gitlab** commented on *2023-07-19T20:11:14.343+0800*:

[刘学利|https://git.mesalab.cn/liuxueli] mentioned this issue in [a commit|https://git.mesalab.cn/tsg/tsg-os-buildimage/-/commit/3730dd8c4eb3ff1e21c5050b23e63a4c8282ac1f] of [TSG / tsg-os-buildimage|https://git.mesalab.cn/tsg/tsg-os-buildimage] on branch [update-v23.07-bgp|https://git.mesalab.cn/tsg/tsg-os-buildimage/-/tree/update-v23.07-bgp]:{quote}更新BGP, 修复 OMPUB-840: 增强校验BGP协议的逻辑，避免误识别导致CPU消耗{quote}



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# Attachments

Attachment: image-2023-03-08-14-22-45-918.png

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Attachment: image-2023-03-08-14-42-46-992.png

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Attachment: tcp_port_179.pcap

[tcp_port_179.pcap](https://gfwleak.exec.li/admin/geedge-jira/raw/branch/master/attachment/35861/tcp_port_179.pcap)