<\/p>\n
\u4f60\u597d\uff01\u4e3a1H2G\u7684VPS\u589e\u52a02048MB\uff082GB\uff09\u7684Swap\u865a\u62df\u5185\u5b58\uff0c**\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u660e\u667a\u4e14\u5e38\u89c1\u7684\u4f18\u5316\u64cd\u4f5c**\u3002\u5bf9\u4e8e\u4f4e\u914d\u7f6e\u670d\u52a1\u5668\u6765\u8bf4\uff0c\u5b83\u7684\u597d\u5904\u8fdc\u5927\u4e8e\u574f\u5904\u3002<\/p>\n
\u4e0b\u9762\u6211\u4e3a\u4f60\u8be6\u7ec6\u5206\u6790\u4e00\u4e0b\u597d\u5904\u548c\u4e0d\u597d\u4e4b\u5904\uff0c\u4ee5\u53ca\u5982\u4f55\u6b63\u786e\u770b\u5f85\u548c\u4f7f\u7528\u5b83\u3002<\/p>\n
—<\/p>\n
### \u597d\u5904<\/p>\n
#### 1. **\u9632\u6b62\u7cfb\u7edf\u56e0\u5185\u5b58\u8017\u5c3d\u800c\u5d29\u6e83\uff08\u6700\u6838\u5fc3\u7684\u597d\u5904\uff09**
\n* **OOM Killer (Out-of-Memory Killer)**\uff1a\u5f53Linux\u7cfb\u7edf\u7684\u7269\u7406\u5185\u5b58\uff08RAM\uff09\u5b8c\u5168\u8017\u5c3d\u65f6\uff0c\u5b83\u4f1a\u542f\u52a8\u4e00\u4e2a\u53eb\u505a\u201cOOM Killer\u201d\u7684\u673a\u5236\uff0c\u968f\u673a\u9009\u62e9\u5e76\u201c\u6740\u6b7b\u201d\u4e00\u4e9b\u8fdb\u7a0b\u6765\u91ca\u653e\u5185\u5b58\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u662f\u65e0\u60c5\u7684\uff0c\u5f88\u53ef\u80fd\u6740\u6389\u4f60\u7684\u7f51\u7ad9\u3001\u6570\u636e\u5e93\u751a\u81f3SSH\u8fde\u63a5\uff0c\u5bfc\u81f4\u670d\u52a1\u5668\u5b8c\u5168\u762b\u75ea\u3002
\n* **Swap\u7684\u4f5c\u7528**\uff1aSwap\u5c31\u50cf\u4e00\u4e2a\u5907\u7528\u4ed3\u5e93\u3002\u5f53\u7269\u7406\u5185\u5b58\u4e0d\u591f\u7528\u65f6\uff0c\u7cfb\u7edf\u4f1a\u5c06\u4e00\u4e9b\u4e0d\u5e38\u7528\u7684\u5185\u5b58\u9875\u9762\uff08\u6570\u636e\uff09\u6682\u65f6\u79fb\u52a8\u5230Swap\u5206\u533a\uff08\u786c\u76d8\u7a7a\u95f4\uff09\u4e2d\uff0c\u4ece\u800c\u91ca\u653e\u51fa\u5b9d\u8d35\u7684\u7269\u7406\u5185\u5b58\u7ed9\u66f4\u9700\u8981\u7684\u7a0b\u5e8f\u3002\u8fd9\u7ed9\u4e86\u4f60\u4e00\u4e2a\u7f13\u51b2\uff0c\u907f\u514d\u4e86OOM Killer\u7684\u4ecb\u5165\uff0c\u5927\u5927\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n
#### 2. **\u5e94\u5bf9\u7a81\u53d1\u6d41\u91cf\u548c\u5185\u5b58\u5cf0\u503c**
\n* \u4f60\u7684\u7f51\u7ad9\u53ef\u80fd\u4f1a\u9047\u5230\u8bbf\u95ee\u91cf\u7a81\u7136\u589e\u5927\u7684\u60c5\u51b5\uff0c\u6216\u8005\u4f60\u5728\u5b9d\u5854\u9762\u677f\u6267\u884c\u4e00\u4e9b\u6d88\u8017\u5185\u5b58\u7684\u64cd\u4f5c\uff08\u5982\u5907\u4efd\u3001\u5927\u6587\u4ef6\u538b\u7f29\u3001\u8f6f\u4ef6\u7f16\u8bd1\uff09\u3002
\n* \u5728\u6ca1\u6709Swap\u7684\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e9b\u77ed\u6682\u7684\u5185\u5b58\u5cf0\u503c\u5c31\u53ef\u80fd\u76f4\u63a5\u5bfc\u81f4\u670d\u52a1\u5d29\u6e83\u3002\u6709\u4e86Swap\uff0c\u7cfb\u7edf\u53ef\u4ee5\u4e34\u65f6\u501f\u7528\u786c\u76d8\u7a7a\u95f4\u6765\u5ea6\u8fc7\u8fd9\u4e2a\u9ad8\u5cf0\u671f\uff0c\u4fdd\u8bc1\u4e86\u670d\u52a1\u7684\u8fde\u7eed\u6027\u3002<\/p>\n
#### 3. **\u5141\u8bb8\u8fd0\u884c\u66f4\u591a\u6216\u66f4\u5927\u7684\u7a0b\u5e8f**
\n* 1H2G\u7684\u914d\u7f6e\u672c\u8eab\u975e\u5e38\u7d27\u5f20\uff0c\u5b9d\u5854\u9762\u677f\u3001Nginx\u3001MySQL\u3001PHP-FPM\u8fd9\u4e9b\u670d\u52a1\u542f\u52a8\u540e\u5c31\u4f1a\u5360\u7528\u5927\u90e8\u5206\u5185\u5b58\u3002
\n* Swap\u7684\u5b58\u5728\u8ba9\u4f60\u6709\u4f59\u529b\u5b89\u88c5\u4e00\u4e9b\u989d\u5916\u7684\u8f7b\u91cf\u7ea7\u5e94\u7528\uff0c\u6216\u8005\u5728\u5185\u5b58\u7d27\u5f20\u65f6\uff0c\u4e0d\u81f3\u4e8e\u5b8c\u5168\u65e0\u6cd5\u64cd\u4f5c\u670d\u52a1\u5668\u3002<\/p>\n
—<\/p>\n
### \u4e0d\u597d\u4e4b\u5904<\/p>\n
#### 1. **\u6027\u80fd\u663e\u8457\u4e0b\u964d\uff08\u6700\u4e3b\u8981\u7684\u7f3a\u70b9\uff09**
\n* **\u901f\u5ea6\u5dee\u5f02**\uff1a\u7269\u7406\u5185\u5b58\uff08RAM\uff09\u7684\u8bfb\u5199\u901f\u5ea6\u662f\u7eb3\u79d2\u7ea7\u522b\u7684\uff0c\u800c\u5373\u4f7f\u662f\u73b0\u5728\u6700\u5feb\u7684SSD\u786c\u76d8\uff0c\u5176\u8bfb\u5199\u901f\u5ea6\u4e5f\u662f\u5fae\u79d2\u7ea7\u522b\u7684\uff0c\u901f\u5ea6\u5dee\u8ddd\u6709**\u6210\u5343\u4e0a\u4e07\u500d**\u3002
\n* **\u4f53\u9a8c**\uff1a\u5f53\u7cfb\u7edf\u5f00\u59cb\u5927\u91cf\u4f7f\u7528Swap\u65f6\uff0c\u4f60\u4f1a\u660e\u663e\u611f\u89c9\u5230\u670d\u52a1\u5668\u53d8\u5f97\u975e\u5e38\u5361\u987f\u3002\u7f51\u7ad9\u54cd\u5e94\u53d8\u6162\uff0c\u6570\u636e\u5e93\u67e5\u8be2\u5ef6\u8fdf\u589e\u9ad8\uff0cSSH\u64cd\u4f5c\u90fd\u53ef\u80fd\u4e00\u987f\u4e00\u987f\u7684\u3002\u56e0\u4e3a\u7cfb\u7edf\u5728\u9891\u7e41\u5730\u8fdb\u884c\u5185\u5b58\u548c\u786c\u76d8\u4e4b\u95f4\u7684\u6570\u636e\u4ea4\u6362\uff08\u8fd9\u4e2a\u8fc7\u7a0b\u53eb\u201c\u6362\u9875\u201d\u6216\u201cSwapping\u201d\uff09\u3002<\/p>\n
#### 2. **\u589e\u52a0\u78c1\u76d8I\/O\u538b\u529b**
\n* \u5927\u91cf\u4f7f\u7528Swap\u610f\u5473\u7740\u5927\u91cf\u7684\u78c1\u76d8\u8bfb\u5199\u3002\u5982\u679c\u4f60\u7684VPS\u662f\u5171\u4eab\u786c\u76d8\u7684\u4e91\u4e3b\u673a\uff0c\u9891\u7e41\u7684I\/O\u64cd\u4f5c\u53ef\u80fd\u4f1a\u53d7\u5230\u670d\u52a1\u5546\u7684\u9650\u5236\uff0c\u5f71\u54cd\u6574\u4f53\u6027\u80fd\u3002<\/p>\n
#### 3. **\u53ef\u80fd\u63a9\u76d6\u771f\u6b63\u7684\u5185\u5b58\u95ee\u9898**
\n* Swap\u662f\u4e00\u4e2a\u201c\u521b\u53ef\u8d34\u201d\uff0c\u5b83\u80fd\u89e3\u51b3\u75c7\u72b6\uff08\u5d29\u6e83\uff09\uff0c\u4f46\u4e0d\u80fd\u89e3\u51b3\u75c5\u6839\uff08\u5185\u5b58\u4e0d\u8db3\uff09\u3002
\n* \u5982\u679c\u4f60\u53d1\u73b0\u670d\u52a1\u5668**\u7ecf\u5e38\u6027\u5730\u3001\u6301\u7eed\u5730**\u4f7f\u7528\u5927\u91cfSwap\uff08\u6bd4\u5982\u8d85\u8fc7\u51e0\u767eMB\uff09\uff0c\u8fd9\u8bf4\u660e\u4f60\u7684\u7269\u7406\u5185\u5b58\u771f\u7684\u4e0d\u591f\u7528\u4e86\u3002\u6b64\u65f6\uff0c\u4f60\u4e0d\u5e94\u8be5\u4f9d\u8d56Swap\uff0c\u800c\u5e94\u8be5\u53bb\u4f18\u5316\u7a0b\u5e8f\uff08\u5982\u8c03\u6574MySQL\u3001PHP-FPM\u7684\u914d\u7f6e\uff09\u6216\u8005\u8003\u8651\u5347\u7ea7\u670d\u52a1\u5668\u914d\u7f6e\u3002<\/p>\n
#### 4. **\u5bf9SSD\u5bff\u547d\u7684\u5fae\u5c0f\u5f71\u54cd\uff08\u57fa\u672c\u53ef\u4ee5\u5ffd\u7565\uff09**
\n* Swap\u4f1a\u9891\u7e41\u5199\u5165\u6570\u636e\u5230\u786c\u76d8\u3002\u5bf9\u4e8e\u673a\u68b0\u786c\u76d8\uff08HDD\uff09\u8fd9\u6ca1\u95ee\u9898\u3002\u5bf9\u4e8e\u56fa\u6001\u786c\u76d8\uff08SSD\uff09\uff0c\u9891\u7e41\u5199\u5165\u786e\u5b9e\u4f1a\u6d88\u8017\u5176\u6709\u9650\u7684\u64e6\u5199\u5bff\u547d\u3002
\n* **\u4f46\u662f\uff0c\u5bf9\u4e8e\u73b0\u4ee3\u7684SSD\u548cVPS\u4f7f\u7528\u573a\u666f\u6765\u8bf4\uff0c\u8fd9\u4e2a\u5f71\u54cd\u5fae\u4e4e\u5176\u5fae\u3002** 2GB\u7684Swap\u5199\u5165\u91cf\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u52a8\u8f84\u4e0a\u767eTB\u5199\u5165\u5bff\u547d\u7684\u73b0\u4ee3SSD\u6765\u8bf4\uff0c\u51e0\u4e4e\u53ef\u4ee5\u5ffd\u7565\u4e0d\u8ba1\u3002\u5728\u4f60\u56e0\u4e3aSwap\u7528\u574fSSD\u4e4b\u524d\uff0c\u4f60\u7684VPS\u5f88\u53ef\u80fd\u65e9\u5c31\u56e0\u4e3a\u5176\u4ed6\u539f\u56e0\u9700\u8981\u66f4\u6362\u6216\u5347\u7ea7\u4e86\u3002<\/p>\n
—<\/p>\n
### \u603b\u7ed3\u4e0e\u5efa\u8bae<\/p>\n
**\u7ed3\u8bba\uff1a\u5bf9\u4e8e1H2G\u7684VPS\uff0c\u589e\u52a02GB Swap\u662f\u5229\u5927\u4e8e\u5f0a\u7684\uff0c\u5f3a\u70c8\u63a8\u8350\u4fdd\u7559\u3002**<\/p>\n
\u4f60\u5e94\u8be5\u628aSwap\u770b\u4f5c\u662f**\u201c\u5b89\u5168\u6c14\u56ca\u201d\u6216\u201c\u5907\u7528\u8f6e\u80ce\u201d**\uff0c\u800c\u4e0d\u662f\u65e5\u5e38\u9a7e\u9a76\u7684\u52a8\u529b\u3002<\/p>\n
**\u6838\u5fc3\u5efa\u8bae\uff1a**<\/p>\n
1. **\u76ee\u6807\u662f\u201c\u5907\u800c\u4e0d\u7528\u201d**\uff1a\u7406\u60f3\u72b6\u6001\u4e0b\uff0c\u4f60\u7684Swap\u5e94\u8be5\u662f\u7a7a\u7684\uff0c\u6216\u8005\u53ea\u5360\u7528\u975e\u5e38\u975e\u5e38\u5c0f\u7684\u7a7a\u95f4\u3002\u8fd9\u8868\u660e\u4f60\u7684\u7269\u7406\u5185\u5b58\u5b8c\u5168\u591f\u7528\uff0c\u7cfb\u7edf\u8fd0\u884c\u6d41\u7545\u3002
\n2. **\u76d1\u63a7\u662f\u5173\u952e**\uff1a\u4f60\u9700\u8981\u5b9a\u671f\u68c0\u67e5Swap\u7684\u4f7f\u7528\u60c5\u51b5\uff0c\u5224\u65ad\u670d\u52a1\u5668\u662f\u5426\u5904\u4e8e\u5065\u5eb7\u72b6\u6001\u3002<\/p>\n
#### \u5982\u4f55\u76d1\u63a7Swap\u4f7f\u7528\u60c5\u51b5\uff1f<\/p>\n
\u4f60\u53ef\u4ee5\u901a\u8fc7SSH\u8fde\u63a5\u670d\u52a1\u5668\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n
“`bash
\n# \u67e5\u770b\u5185\u5b58\u548cSwap\u7684\u603b\u4f53\u4f7f\u7528\u60c5\u51b5
\nfree -h<\/p>\n
# \u8f93\u51fa\u793a\u4f8b
\ntotal used free shared buff\/cache available
\nMem: 1.9Gi 1.1Gi 256Mi 5.0Mi 589Mi 689Mi
\nSwap: 2.0Gi 0B 2.0Gi
\n“`
\n* \u5173\u6ce8 `Swap` \u90a3\u4e00\u884c\u3002\u5982\u679c `used` \u5217\u957f\u671f\u662f `0` \u6216\u51e0\u5341 `MiB`\uff0c\u8bf4\u660e\u5f88\u5065\u5eb7\u3002\u5982\u679c\u957f\u671f\u662f\u51e0\u767e `MiB` \u751a\u81f3 `GiB`\uff0c\u5c31\u9700\u8981\u8b66\u60d5\u4e86\u3002<\/p>\n
“`bash
\n# \u5b9e\u65f6\u67e5\u770b\u54ea\u4e2a\u8fdb\u7a0b\u5728\u4f7f\u7528Swap
\ntop
\n# \u5728 top \u7684\u754c\u9762\u4e2d\uff0c\u6309 ‘f’ \u952e\uff0c\u7136\u540e\u6309 ‘p’ \u952e\uff08\u4ee3\u8868 SWAP\uff09\uff0c\u518d\u6309\u56de\u8f66\u3002\u8fd9\u6837\u5c31\u4f1a\u663e\u793a SWAP \u5217\u3002
\n# \u6216\u8005\u4f7f\u7528\u66f4\u76f4\u89c2\u7684 htop
\nhtop
\n# \u5728 htop \u7684\u8bbe\u7f6e\u4e2d\uff0c\u53ef\u4ee5\u6dfb\u52a0 SWAP \u5217\u8fdb\u884c\u663e\u793a\u3002
\n“`<\/p>\n
**\u5982\u679c\u53d1\u73b0Swap\u7ecf\u5e38\u88ab\u5927\u91cf\u4f7f\u7528\uff0c\u4f60\u5e94\u8be5\uff1a**<\/p>\n
* **\u4f18\u5316MySQL**\uff1a\u964d\u4f4e `innodb_buffer_pool_size` \u7684\u503c\uff0c\u901a\u5e38\u8bbe\u4e3a\u7269\u7406\u5185\u5b58\u768430%-50%\u662f\u6bd4\u8f83\u5b89\u5168\u7684\u8d77\u70b9\u3002
\n* **\u4f18\u5316PHP-FPM**\uff1a\u8c03\u6574 `pm.max_children`\u3001`pm.start_servers`\u3001`pm.min_spare_servers` \u7b49\u53c2\u6570\uff0c\u51cf\u5c11PHP\u8fdb\u7a0b\u6570\u91cf\u3002
\n* **\u68c0\u67e5\u7f51\u7ad9\u4ee3\u7801**\uff1a\u770b\u662f\u5426\u6709\u5185\u5b58\u6cc4\u6f0f\u6216\u4e0d\u9ad8\u6548\u7684\u4ee3\u7801\u3002
\n* **\u8003\u8651\u5347\u7ea7**\uff1a\u5982\u679c\u4f18\u5316\u540e\u4f9d\u7136\u7d27\u5f20\uff0c\u90a3\u4e481H2G\u7684\u914d\u7f6e\u53ef\u80fd\u786e\u5b9e\u65e0\u6cd5\u6ee1\u8db3\u4f60\u7684\u4e1a\u52a1\u9700\u6c42\uff0c\u5347\u7ea7\u52302H4G\u4f1a\u662f\u8d28\u7684\u98de\u8dc3\u3002<\/p>\n
\u603b\u4e4b\uff0c\u4f60\u589e\u52a0Swap\u7684\u64cd\u4f5c\u662f\u5b8c\u5168\u6b63\u786e\u7684\uff0c\u5b83\u4e3a\u4f60\u7684\u5c0f\u670d\u52a1\u5668\u4e0a\u4e86\u4e00\u9053\u91cd\u8981\u7684\u4fdd\u9669\u3002\u73b0\u5728\u4f60\u9700\u8981\u505a\u7684\u5c31\u662f\u5b66\u4f1a\u76d1\u63a7\u5b83\uff0c\u5e76\u7406\u89e3\u5b83\u6240\u53cd\u6620\u51fa\u7684\u670d\u52a1\u5668\u5065\u5eb7\u72b6\u51b5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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