241 lines
10 KiB
Markdown
241 lines
10 KiB
Markdown
# 9.1 Kvstore
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## 需求
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1. ntyco需要作为kvstore的submodule,通过git clone一次下载。 **完成**。
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2. README需要包含编译步骤，测试方案与可行性，性能数据。 **完成**。
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3. 全量持久化保存数据集。 **BUG FIX**。
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4. 持久化的性能数据。
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5. 特殊字符，可以解决redis的resp协议。 **完成**。
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6. 实现配置文件，把日志级别，端口ip，主从模式，持久化方案。 **完成**。
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7. 持久化落盘用io_uring，加载配置文件用mmap。 **完成**。
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8. 主从同步的性能，开启与关闭性能做到5%?。
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9. 主从同步600w条,出现的coredump。 **完成**。
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10. 主从同步用ebpf实现。 **BUG FIX**。
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11. 内存池测试qps与虚拟内存，物理内存。
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12. 实现一个内存泄露检测组件。 **完成**。
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## 环境安装与编译
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```shell
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# xml
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sudo apt install libxml2 libxml2-dev
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# hiredis client
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sudo apt install -y libhiredis-dev
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# bpftrace
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sudo apt install -y bpftrace
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git clone git@gitlab.0voice.com:lianyiheng/9.1-kvstore.git
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cd 9.1-kvstore/
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git submodule update --init --recursive
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./init.sh
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make
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```
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## 测试
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### 测试1：性能测试
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测试条件：
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1. 不启用持久化。
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2. 不启用主从同步。
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2. pipline：
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1. RSET 100w 条， p:i v:i -> +OK
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2. RGET 100w 条， p:i -> +v:i
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3. RDEL 100w 条。 p:i -> +OK
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3. 重复 15 次.
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4. 本机发送请求。
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内存分配: malloc
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```bash
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lian@ubuntu:~/share/9.1-kvstore$ ./test-redis/testcase 192.168.10.129 8888 3
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Connected to 192.168.10.129:8888
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BATCH (N=3000000) --> time_used=3294 ms, qps=910746
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BATCH (N=3000000) --> time_used=3501 ms, qps=856898
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BATCH (N=3000000) --> time_used=3457 ms, qps=867804
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BATCH (N=3000000) --> time_used=3351 ms, qps=895255
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BATCH (N=3000000) --> time_used=3320 ms, qps=903614
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BATCH (N=3000000) --> time_used=3551 ms, qps=844832
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BATCH (N=3000000) --> time_used=3354 ms, qps=894454
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BATCH (N=3000000) --> time_used=3475 ms, qps=863309
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BATCH (N=3000000) --> time_used=3404 ms, qps=881316
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BATCH (N=3000000) --> time_used=3460 ms, qps=867052
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BATCH (N=3000000) --> time_used=3392 ms, qps=884433
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BATCH (N=3000000) --> time_used=3427 ms, qps=875401
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BATCH (N=3000000) --> time_used=3441 ms, qps=871839
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BATCH (N=3000000) --> time_used=3471 ms, qps=864304
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BATCH (N=3000000) --> time_used=3354 ms, qps=894454
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BATCH (N=3000000) --> time_used=3447 ms, qps=870322
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BATCH (N=3000000) --> time_used=3364 ms, qps=891795
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BATCH (N=3000000) --> time_used=3200 ms, qps=937500
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BATCH (N=3000000) --> time_used=3159 ms, qps=949667
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BATCH (N=3000000) --> time_used=3482 ms, qps=861573
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BATCH (N=3000000) --> time_used=3474 ms, qps=863557
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BATCH (N=3000000) --> time_used=3591 ms, qps=835421
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BATCH (N=3000000) --> time_used=3466 ms, qps=865551
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BATCH (N=3000000) --> time_used=3425 ms, qps=875912
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BATCH (N=3000000) --> time_used=3346 ms, qps=896592
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BATCH (N=3000000) --> time_used=3532 ms, qps=849377
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BATCH (N=3000000) --> time_used=3471 ms, qps=864304
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BATCH (N=3000000) --> time_used=3616 ms, qps=829646
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BATCH (N=3000000) --> time_used=3403 ms, qps=881575
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BATCH (N=3000000) --> time_used=3426 ms, qps=875656
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BATCH (N=3000000) --> time_used=3493 ms, qps=858860
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BATCH (N=3000000) --> time_used=3411 ms, qps=879507
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BATCH (N=3000000) --> time_used=3422 ms, qps=876680
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BATCH (N=3000000) --> time_used=3556 ms, qps=843644
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BATCH (N=3000000) --> time_used=3285 ms, qps=913242
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BATCH (N=3000000) --> time_used=3486 ms, qps=860585
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BATCH (N=3000000) --> time_used=3427 ms, qps=875401
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BATCH (N=3000000) --> time_used=3563 ms, qps=841987
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BATCH (N=3000000) --> time_used=3304 ms, qps=907990
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BATCH (N=3000000) --> time_used=3582 ms, qps=837520
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BATCH (N=3000000) --> time_used=3468 ms, qps=865051
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BATCH (N=3000000) --> time_used=3360 ms, qps=892857
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BATCH (N=3000000) --> time_used=3426 ms, qps=875656
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BATCH (N=3000000) --> time_used=3186 ms, qps=941619
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BATCH (N=3000000) --> time_used=3251 ms, qps=922792
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BATCH (N=3000000) --> time_used=3400 ms, qps=882352
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BATCH (N=3000000) --> time_used=3446 ms, qps=870574
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BATCH (N=3000000) --> time_used=3302 ms, qps=908540
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BATCH (N=3000000) --> time_used=3072 ms, qps=976562
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BATCH (N=3000000) --> time_used=3458 ms, qps=867553
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average qps:880462
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ALL TESTS PASSED.
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```
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内存分配: 自实现内存池
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```bash
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lian@ubuntu:~/share/9.1-kvstore$ ./test-redis/testcase 192.168.10.129 8888 3
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Connected to 192.168.10.129:8888
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BATCH (N=3000000) --> time_used=3552 ms, qps=844594
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BATCH (N=3000000) --> time_used=3404 ms, qps=881316
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BATCH (N=3000000) --> time_used=3083 ms, qps=973078
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BATCH (N=3000000) --> time_used=3315 ms, qps=904977
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BATCH (N=3000000) --> time_used=3462 ms, qps=866551
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BATCH (N=3000000) --> time_used=3334 ms, qps=899820
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BATCH (N=3000000) --> time_used=3358 ms, qps=893388
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BATCH (N=3000000) --> time_used=3423 ms, qps=876424
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BATCH (N=3000000) --> time_used=3319 ms, qps=903886
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BATCH (N=3000000) --> time_used=3327 ms, qps=901713
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BATCH (N=3000000) --> time_used=3157 ms, qps=950269
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BATCH (N=3000000) --> time_used=3241 ms, qps=925640
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BATCH (N=3000000) --> time_used=3301 ms, qps=908815
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BATCH (N=3000000) --> time_used=3345 ms, qps=896860
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BATCH (N=3000000) --> time_used=3319 ms, qps=903886
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BATCH (N=3000000) --> time_used=3312 ms, qps=905797
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BATCH (N=3000000) --> time_used=3337 ms, qps=899011
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BATCH (N=3000000) --> time_used=3309 ms, qps=906618
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BATCH (N=3000000) --> time_used=3385 ms, qps=886262
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BATCH (N=3000000) --> time_used=3328 ms, qps=901442
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BATCH (N=3000000) --> time_used=3194 ms, qps=939261
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BATCH (N=3000000) --> time_used=3309 ms, qps=906618
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BATCH (N=3000000) --> time_used=3262 ms, qps=919681
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BATCH (N=3000000) --> time_used=3314 ms, qps=905250
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BATCH (N=3000000) --> time_used=3382 ms, qps=887049
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BATCH (N=3000000) --> time_used=3296 ms, qps=910194
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BATCH (N=3000000) --> time_used=3331 ms, qps=900630
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BATCH (N=3000000) --> time_used=3279 ms, qps=914913
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BATCH (N=3000000) --> time_used=2996 ms, qps=1001335
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BATCH (N=3000000) --> time_used=3387 ms, qps=885739
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BATCH (N=3000000) --> time_used=3346 ms, qps=896592
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BATCH (N=3000000) --> time_used=3241 ms, qps=925640
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BATCH (N=3000000) --> time_used=3353 ms, qps=894721
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BATCH (N=3000000) --> time_used=3366 ms, qps=891265
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BATCH (N=3000000) --> time_used=3387 ms, qps=885739
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BATCH (N=3000000) --> time_used=3382 ms, qps=887049
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BATCH (N=3000000) --> time_used=3358 ms, qps=893388
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BATCH (N=3000000) --> time_used=3372 ms, qps=889679
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BATCH (N=3000000) --> time_used=3467 ms, qps=865301
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BATCH (N=3000000) --> time_used=3243 ms, qps=925069
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BATCH (N=3000000) --> time_used=3191 ms, qps=940144
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BATCH (N=3000000) --> time_used=3365 ms, qps=891530
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BATCH (N=3000000) --> time_used=3218 ms, qps=932256
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BATCH (N=3000000) --> time_used=3332 ms, qps=900360
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BATCH (N=3000000) --> time_used=3172 ms, qps=945775
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BATCH (N=3000000) --> time_used=3211 ms, qps=934288
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BATCH (N=3000000) --> time_used=3124 ms, qps=960307
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BATCH (N=3000000) --> time_used=3043 ms, qps=985869
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BATCH (N=3000000) --> time_used=3086 ms, qps=972132
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BATCH (N=3000000) --> time_used=3201 ms, qps=937207
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average qps:911106
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ALL TESTS PASSED.
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```
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内存分配：jemalloc
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```shell
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lian@ubuntu:~/share/9.1-kvstore$ ./test-redis/testcase 192.168.10.129 8888 3
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Connected to 192.168.10.129:8888
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BATCH (N=3000000) --> time_used=3197 ms, qps=938379
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BATCH (N=3000000) --> time_used=3221 ms, qps=931387
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BATCH (N=3000000) --> time_used=3360 ms, qps=892857
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BATCH (N=3000000) --> time_used=3292 ms, qps=911300
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BATCH (N=3000000) --> time_used=3407 ms, qps=880540
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BATCH (N=3000000) --> time_used=3317 ms, qps=904431
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BATCH (N=3000000) --> time_used=3337 ms, qps=899011
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BATCH (N=3000000) --> time_used=3384 ms, qps=886524
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BATCH (N=3000000) --> time_used=3355 ms, qps=894187
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BATCH (N=3000000) --> time_used=3379 ms, qps=887836
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BATCH (N=3000000) --> time_used=3243 ms, qps=925069
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BATCH (N=3000000) --> time_used=3377 ms, qps=888362
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BATCH (N=3000000) --> time_used=3212 ms, qps=933997
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BATCH (N=3000000) --> time_used=3248 ms, qps=923645
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BATCH (N=3000000) --> time_used=3234 ms, qps=927643
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BATCH (N=3000000) --> time_used=3152 ms, qps=951776
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BATCH (N=3000000) --> time_used=3089 ms, qps=971188
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BATCH (N=3000000) --> time_used=3287 ms, qps=912686
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BATCH (N=3000000) --> time_used=3079 ms, qps=974342
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BATCH (N=3000000) --> time_used=3261 ms, qps=919963
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BATCH (N=3000000) --> time_used=3123 ms, qps=960614
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BATCH (N=3000000) --> time_used=3234 ms, qps=927643
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BATCH (N=3000000) --> time_used=3056 ms, qps=981675
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BATCH (N=3000000) --> time_used=3040 ms, qps=986842
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BATCH (N=3000000) --> time_used=3187 ms, qps=941324
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BATCH (N=3000000) --> time_used=3311 ms, qps=906070
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BATCH (N=3000000) --> time_used=3155 ms, qps=950871
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BATCH (N=3000000) --> time_used=3318 ms, qps=904159
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BATCH (N=3000000) --> time_used=3372 ms, qps=889679
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BATCH (N=3000000) --> time_used=3254 ms, qps=921942
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BATCH (N=3000000) --> time_used=3386 ms, qps=886001
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BATCH (N=3000000) --> time_used=3413 ms, qps=878992
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BATCH (N=3000000) --> time_used=3474 ms, qps=863557
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BATCH (N=3000000) --> time_used=3412 ms, qps=879249
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BATCH (N=3000000) --> time_used=3414 ms, qps=878734
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BATCH (N=3000000) --> time_used=3325 ms, qps=902255
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BATCH (N=3000000) --> time_used=3346 ms, qps=896592
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BATCH (N=3000000) --> time_used=3345 ms, qps=896860
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BATCH (N=3000000) --> time_used=3582 ms, qps=837520
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BATCH (N=3000000) --> time_used=3412 ms, qps=879249
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BATCH (N=3000000) --> time_used=3370 ms, qps=890207
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BATCH (N=3000000) --> time_used=3375 ms, qps=888888
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BATCH (N=3000000) --> time_used=3190 ms, qps=940438
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BATCH (N=3000000) --> time_used=3324 ms, qps=902527
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BATCH (N=3000000) --> time_used=3253 ms, qps=922225
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BATCH (N=3000000) --> time_used=3230 ms, qps=928792
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BATCH (N=3000000) --> time_used=3294 ms, qps=910746
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BATCH (N=3000000) --> time_used=3295 ms, qps=910470
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BATCH (N=3000000) --> time_used=3148 ms, qps=952986
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BATCH (N=3000000) --> time_used=3228 ms, qps=929368
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average qps:914031
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ALL TESTS PASSED.
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```
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### 面试题
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1. 为什么会实现kvstore，使用场景在哪里？
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2. reactor, ntyco, io_uring的三种网络模型的性能差异？
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3. 多线程的kvstore该如何改进？
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4. 私有协议如何设计会更加安全可靠？
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5. 协议改进以后，对已有的代码有哪些改变？
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6. kv引擎实现了哪些？
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7. 每个kv引擎的使用场景，以及性能差异？
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8. 测试用例如何实现？并且保证代码覆盖率超过90%
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9. 网络并发量如何？qps如何？
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10. 能够跟哪些系统交互使用？
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### 架构设计
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