LogListener 默认未做 CPU 资源限制，若需限制，可参见 配置 LogListener，修改 LogListener 配置文件中的 cpu_usage_thres 最大 CPU 利用率。目前 LogListener 的实现架构，如未做 CPU 资源限制，其最高能够达到的单核 CPU 使用率为110%左右（业务线程最大100%， 管控线程10%左右）。
例如(level:ERROR AND pid:1234) AND service:test为2层嵌套，可正常执行检索；而下面的语句为11层嵌套，执行检索将会报错status:"499" AND ("0.000" AND (request_length:"528" AND ("https" AND (url:"/api" AND (version:"HTTP/1.1" AND ("2021" AND ("0" AND (upstream_addr:"169.254.128.14" AND (method:"GET" AND (remote_addr:"114.86.92.100"))))))))))。
内存占用量（分析）
统计分析每次所占用的服务端内存不能超过3GB。
通常在使用 group by、distinct()、count(distinct()) 时可能触发该限制，是由于被统计的字段在通过 group by 或 distinct() 去重后值过多导致的。建议优化查询语句，使用值更少的字段对数据进行分组统计；或使用 approx_distinct() 替代 count(distinct())。
59.x.x.x - - [06/Aug/2019:12:12:19 +0800]"GET /nginx-logo.png HTTP/1.1"200368"http://119.x.x.x/""Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36""-"
多行日志示例：
java.net.SocketTimeoutException:Receive timed out
at j.n.PlainDatagramSocketImpl.receive0(Native Method)[na:1.8.0_151]
at j.n.AbstractPlainDatagramSocketImpl.receive(AbstractPlainDatagramSocketImpl.java:143)[^]
at j.n.DatagramSocket.receive(DatagramSocket.java:812)[^]
at o.s.n.SntpClient.requestTime(SntpClient.java:213)[classes/]
at o.s.n.SntpClient$1.call(^:145)[^]
at ^.call(^:134)[^]
at o.s.f.SyncRetryExecutor.call(SyncRetryExecutor.java:124)[^]
at o.s.f.RetryPolicy.call(RetryPolicy.java:105)[^]
at o.s.f.SyncRetryExecutor.call(SyncRetryExecutor.java:59)[^]
at o.s.n.SntpClient.requestTimeHA(SntpClient.java:134)[^]
at ^.requestTimeHA(^:122)[^]
at o.s.n.SntpClientTest.test2h(SntpClientTest.java:89)[test-classes/]
at s.r.NativeMethodAccessorImpl.invoke0(Native Method)[na:1.8.0_151]
For this Feature, the available Service Regions are as follows:
Singapore
Bangkok
Silicon Valley
Frankfurt
Seoul
Tokyo
Virginia
Sao Paulo
Jakarta
Riyadh
For further details on the entities that provide the data center and infrastructure for Service Regions and on which the Tencent Cloud services run, please refer to Tencent Cloud’s general Sub‑processors and Other Third Parties page.
Sub-Processors and service providers that provide services to and process Content for this Feature
The entities listed below are Sub-Processors that we engage to process your Content for this Feature.
Entity / Party / Recipient Category
Purpose(s) of Entity’s Data Processing Activity
Processing Location
-
-
-
For Sub-Processors that we engage to process your Content (as defined in the Data Processing and Security Agreement) generally across the board for Tencent Cloud Features and/or services, please refer to the page for more information.
Service Providers or Partners that provide processing activities to Administrative Information for this Feature
The entities listed below are the service providers or partners that we engage to process your Administrative Information in connection with this Feature.
