迁移服务器后Cypress测试因内存不足崩溃，求内存调整方案

问题说明 #

服务器迁移至新机器后，使用Chrome浏览器执行Cypress测试时，频繁出现内存不足导致的崩溃问题。已尝试设置numTestsKeptInMemory: 0，但问题依旧。当前cypress.json中的测试文件配置如下：

"testFiles": [
    "01_Settings/KeyMateOnline/settings.js",
    "GRP_1000_Groups and SiteCollections/TC_5.0_GRP_1002_CreateNewGroup.js",
    "GRP_1000_SGroups and SiteCollections/TC_5.0_GRP_1003_Creating a new SiteCollection.js",
    "SNP_0800_Snapshots/TC_5.0_SNP_0801_Manual Snapshot Creation.js",
    "REP_0500_Reporting Functions/REP_1_Permissions by User/TC_5.0_REP_1_0501_Filter by Role.js",
    "REP_0500_Reporting Functions/REP_1_Permissions by User/TC_5.0_REP_1_0502_Filter by Member.js",
    "REP_0500_Reporting Functions/REP_2_Permissions by Role/TC_5.0_REP_2_0504_Filter by Role.js",
    "REP_0500_Reporting Functions/REP_2_Role-based Permissions/TC_5.0_REP_2_0505_Filter by Member.js",
    "REP_0500_Reporting Functions/REP_3_Membership by Role/TC_5.0_REP_3_0506_Filter Membership by Role.js",
    "REP_0500_Reportovací funkce/REP_4_Sdílení/TC_5.0_REP_4_0509_Filtr Sdílení.js",
    "EXE_0600_Execution Function/EXE_1_Group Membership/TC_5.0_EXE_1_0600_Adding Selected User to SP Group.js",
    "SNP_0800_Snapshots/TC_5.0_SNP_0800_Smazání Snapshotu.js",
    "SNP_0800_Snapshots/TC_5.0_SNP_0801_Manually create Snapshot.js",
    "EXE_0600_Execution Functions/EXE_1_Group Membership/TC_5.0_EXE_1_0602_Removing selected user from SP group.js",
    "SNP_0800_Snapshots/TC_5.0_SNP_0800_Smazání Snapshotu.js",
    "SNP_0800_Snapshots/TC_5.0_SNP_0801_Manual creation of Snapshot.js",
    "EXE_0600_Execution Functions/EXE_2_Permissions/TC_5.0_EXE_2_0601_Assign permissions to specific selected users.js",
    "SNP_0800_Snapshots/TC_5.0_SNP_0800_Smazání Snapshotu.js",
    "SNP_0800_Snapshots/TC_5.0_SNP_0801_Manual creation of Snapshot.js",
    "EXE_0600_Execution Functions/EXE_2_Permissions/TC_5.0_EXE_2_0603_Removing permissions for specific selected users.js",
    "SNP_0800_Snapshots/TC_5.0_SNP_0803_Creating Exception from Snapshots.js",
    "SNP_0800_Snapshots/TC_5.1_SNP_0804_View and delete Snapshots exception.js",
    "NTF_1100_Notifications/TC_5.1_NTF_1100_Creating a new notification for a specific site.js",
    "NTF_1100_Notifications/TC_5.1_NTF_1101_Display Notification Overview.js",
    "MSP_1200_Multisnapshot/TC_5.1_MSP_1200_Creating a report in the main Site collection container.js",
    "GRP_1000_SGroups and SiteCollections/TC_5.0_GRP_1008/Delete Site Collection.js"
  ]

解决建议 #

• 给Chrome设置内存上限：在cypress.json中添加Chrome启动参数，手动分配内存。示例配置：

  "env": {
    "CHROME_FLAGS": "--max-old-space-size=4096"
  }
  

  其中4096代表4GB内存，可根据新机器的内存配置调整数值（单位为MB）。

• 清理并拆分测试用例：从配置中可见存在重复的测试文件（比如多次出现的TC_5.0_SNP_0800_Smazání Snapshotu.js），先删除重复项减少不必要的加载。再将所有测试拆分为多个小批次，分阶段执行，避免一次性加载过多测试占用内存。

• 关闭非必要的Cypress功能：如果不需要测试视频，在cypress.json中设置"video": false；同时可设置"screenshotsFolder": false禁用自动截图，或仅在测试失败时保存截图，以此降低内存消耗。

• 升级服务器内存：如果新机器本身内存容量不足，直接增加物理内存是最彻底的解决方案，确保系统有足够资源支撑Cypress和Chrome的运行。

• 启用并行测试：若使用的Cypress版本支持，通过cypress run --parallel命令将测试分配到多个Chrome进程中并行执行，分散单进程的内存压力。

内容的提问来源于stack exchange，提问作者Tomasito