【E21现场】优化app_sketch_local插件的内存使用，修复BOLE-IGW 10.225.11.1 内存告警

ID	Creation Date	Assignee	Status
OMPUB-523	2022-06-14T04:07:14.000+0800	刘学利	已关闭

BOLE-IGW 10.225.11.1 从2022-06-09 16:17:00 重启之后内存持续上涨到现在已经超过80了，告警已经持续了一天多

DIR-IGW 10.219.11.7 在2022-06-06出现内存告警，查看流量、内存曲线，升级之后内存曲线是持续上涨的。liuxueli commented on 2022-06-16T13:22:53.812+0800:

liuxueli commented on 2022-06-16T15:58:21.460+0800:

liuxueli commented on 2022-06-20T09:12:00.914+0800:

在BOLE-IGW 10.225.11.1更新app_sketch_local后，内存节约10%左右 ** !image-2022-06-20-09-11-06-798.png!

zhengchao commented on 2022-06-20T10:14:46.991+0800:

并发会话有多少？列一下节省内存的计算公式。

liuxueli commented on 2022-06-20T10:44:19.379+0800:

SAPP统计的流标签的数量如下，{color:#de350b}其中app_sketch_local的流标签数量为3095301个，每个流标签节省约4KB的内存，3095301+4KB=12678352896(约12.6GB){color} ** 旧版本app_sketch_local每个流标签大小为(32+4096)bytes，4K存储包长序列的特征 ** 修改后app_sketch_local每个流标签大小为(32+24+N82)bytes，其中N代表记录包长的个数，目前配置是N=2 ** {code:java} Project_ID In_Use_Number Project_Name 1 2856557 tcp_flow_stat 2 2856557 tcp_deduce_flow_stat 3 1226075 udp_flow_stat 4 2415256 L7_PROTOCOL_LABEL 6 3940743 TSG_MASTER_INTERNAL_LABEL 7 3095300 TSG_MASTER_CONTEXT 8 3940746 TSG_TCPALL_CONTEXT 9 3041973 APP_IDENTIFY_RESULT 10 1280149 MESA_PROTO 11 1172430 JA3_FINGERPRINT_LABEL 12 1718 MAIL_IDENTIFY 13 2856560 SKETCH_PROTO_CTX_LABEL 14 3940748 SKETCH_TRANS_LAYER_CTX_LABEL 15 19169 CAPTURE_STREAM_PME 17 33869 USER_DEFINE_APP_ID_LABEL 18 582895 BUILT_IN_APP_ID_LABEL 19 2322879 SYN_ATTRIBUTE 20 787358 SACK_ATTRIBUTE 21 3095301 APP_SKETCH_CONTEXT Total 39466283 N/A {code}