# ⚡️【教程】对于IO磁盘性能很差的或者纯HDD盘的VPS，不要用SWAP，要用ZRAM进行虚拟内存扩展！

**URL:** <https://idcflare.com/t/topic/81541>\
**Category:** 教程\
**Tags:** 原创, 服务器\
**Created:** [2026 年4 月 22 日 08:57 UTC](https://idcflare.com/t/topic/81541 "2026-04-22T08:57:44Z")\
**Posts on this page:** 20\
**Page:** 1

<div class="post-metadata">

**Author:** ![LET](https://idcflare.com/user_avatar/idcflare.com/let/32/18888_2.png) [@LET](https://idcflare.com/u/LET)\
**Post date:** [2026 年4 月 22 日 08:57 UTC](https://idcflare.com/t/topic/81541/1 "2026-04-22T08:57:45Z")

</div>

前几天翻出了台IO很差的大盘鸡，石头盘，SWAP设置了卡的内核基本都要崩溃，运行什么都假死  
于是发现了ZRAM这种内存扩展技术，对于低IO的主机进行内存扩展有奇效~

* * *

SWAP是用磁盘进行扩展内存的，磁盘IO差的时候，用起来比之前还卡，且容易假死  
如果你的磁盘IO很差，或者要求高速内存速度进行扩展，那么ZRAM最适合

因为ZRAM是基于内存压缩技术，你的扩展内存还是在内存里面进行的，压缩技术，速度依然非常非常快

没有纯SSD的纯HDD盘也建议用ZRAM技术进行内存扩展

# 下面是整理的教程

**1. 安装工具**

```bash
sudo apt update && sudo apt install -y zram-tools

```

**2. 配置大小**  
编辑配置文件，设定 ZRAM 容量（按内存比例）：

```bash
sudo nano /etc/default/zramswap

```

填入以下内容（示例为 50% 内存，适配 512M~8G 设备）：

```ini
ALGO=lz4 # 高速压缩算法，兼顾速度与效率
PERCENT=50 # 占用物理内存的 50% 作为 ZRAM（内存≤4GB 可设 100%）
PRIORITY=100 # 优先使用 ZRAM，优于磁盘 Swap

```

保存退出：`Ctrl+O` → 回车 → `Ctrl+X`。

**3. 启动并开机自启**

```bash
sudo systemctl enable --now zramswap.service

```

### 查看是否生效

执行以下命令，出现 `/dev/zram0` 即成功：

```bash
swapon --show

```

监控状态（查看压缩比与内存占用）：

```bash
zramctl

```

或查看详细统计：

```bash
cat /sys/block/zram0/mm_stat

```

# 佬友们可以试试，对低IO或者HDD盘开启内存扩展非常不错

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<div class="post-metadata">

**Author:** ![KAE123](https://idcflare.com/user_avatar/idcflare.com/kae123/32/46837_2.png) [@KAE123](https://idcflare.com/u/KAE123)\
**Post date:** [2026 年4 月 22 日 09:11 UTC](https://idcflare.com/t/topic/81541/2 "2026-04-22T09:11:31Z")

</div>

感谢佬分享

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<div class="post-metadata">

**Author:** ![xyfusheng](https://idcflare.com/letter_avatar/xyfusheng/32/6_22734026db12803ebb3e059622ac3534.png) [@xyfusheng](https://idcflare.com/u/xyfusheng)\
**Post date:** [2026 年4 月 22 日 09:23 UTC](https://idcflare.com/t/topic/81541/3 "2026-04-22T09:23:13Z")

</div>

学到了，感谢佬友分享

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<div class="post-metadata">

**Author:** ![yqyan](https://idcflare.com/user_avatar/idcflare.com/yqyan/32/3375_2.png) [@yqyan](https://idcflare.com/u/yqyan)\
**Post date:** [2026 年4 月 22 日 09:34 UTC](https://idcflare.com/t/topic/81541/4 "2026-04-22T09:34:04Z")

</div>

感谢分享教程 🙏

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<div class="post-metadata">

**Author:** ![Luis](https://idcflare.com/user_avatar/idcflare.com/luis/32/247_2.png) [@Luis](https://idcflare.com/u/Luis)\
**Post date:** [2026 年4 月 22 日 13:29 UTC](https://idcflare.com/t/topic/81541/5 "2026-04-22T13:29:41Z")

</div>

这个好诶！感谢佬的分享啊！ 😆

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<div class="post-metadata">

**Author:** ![ava995](https://idcflare.com/user_avatar/idcflare.com/ava995/32/6537_2.png) [@ava995](https://idcflare.com/u/ava995)\
**Post date:** [2026 年4 月 22 日 13:52 UTC](https://idcflare.com/t/topic/81541/6 "2026-04-22T13:52:43Z")

</div>

感谢分享教程

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<div class="post-metadata">

**Author:** ![zx01](https://idcflare.com/user_avatar/idcflare.com/zx01/32/41197_2.png) [@zx01](https://idcflare.com/u/zx01)\
**Post date:** [2026 年4 月 22 日 16:39 UTC](https://idcflare.com/t/topic/81541/7 "2026-04-22T16:39:15Z")

</div>

感谢分享，有时间试一下。

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<div class="post-metadata">

**Author:** ![BL1ACHxinzhan](https://idcflare.com/user_avatar/idcflare.com/bl1achxinzhan/32/16485_2.png) [@BL1ACHxinzhan](https://idcflare.com/u/BL1ACHxinzhan)\
**Post date:** [2026 年4 月 22 日 23:12 UTC](https://idcflare.com/t/topic/81541/8 "2026-04-22T23:12:44Z")

</div>

请问科罗娜的1C1G20GB也适用吗？有三位车友，所以不怎么敢折腾，每次崩了都要重新弄，挺对不起车友的，所以基本就一个自建鸡场，剩下的资源都是风扇空转。

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<div class="post-metadata">

**Author:** ![163](https://idcflare.com/user_avatar/idcflare.com/163/32/58750_2.png) [@163](https://idcflare.com/u/163)\
**Post date:** [2026 年4 月 22 日 23:39 UTC](https://idcflare.com/t/topic/81541/9 "2026-04-22T23:39:57Z")

</div>

还有这种东西

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<div class="post-metadata">

**Author:** ![nero](https://idcflare.com/user_avatar/idcflare.com/nero/32/714_2.png) [@nero](https://idcflare.com/u/nero)\
**Post date:** [2026 年4 月 23 日 00:43 UTC](https://idcflare.com/t/topic/81541/10 "2026-04-23T00:43:04Z")

</div>

谢谢分享 🫰

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<div class="post-metadata">

**Author:** ![xpro](https://idcflare.com/letter_avatar/xpro/32/6_22734026db12803ebb3e059622ac3534.png) [@xpro](https://idcflare.com/u/xpro)\
**Post date:** [2026 年4 月 23 日 01:20 UTC](https://idcflare.com/t/topic/81541/11 "2026-04-23T01:20:17Z")

</div>

感谢分享

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<div class="post-metadata">

**Author:** ![ORG](https://idcflare.com/user_avatar/idcflare.com/org/32/10054_2.png) [@ORG](https://idcflare.com/u/ORG)\
**Post date:** [2026 年4 月 23 日 01:21 UTC](https://idcflare.com/t/topic/81541/12 "2026-04-23T01:21:25Z")

</div>

不错，学习一下，感谢佬友分享。

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<div class="post-metadata">

**Author:** ![LET](https://idcflare.com/user_avatar/idcflare.com/let/32/18888_2.png) [@LET](https://idcflare.com/u/LET)\
**Post date:** [2026 年4 月 23 日 01:22 UTC](https://idcflare.com/t/topic/81541/13 "2026-04-23T01:22:32Z")

</div>

可以试下，设置好了重启一下就行，不重启好像也生效

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<div class="post-metadata">

**Author:** ![bai](https://idcflare.com/user_avatar/idcflare.com/bai/32/605_2.png) [@bai](https://idcflare.com/u/bai)\
**Post date:** [2026 年4 月 23 日 01:49 UTC](https://idcflare.com/t/topic/81541/14 "2026-04-23T01:49:06Z")

</div>

感谢大佬教程，学到了

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<div class="post-metadata">

**Author:** ![iouvps](https://idcflare.com/user_avatar/idcflare.com/iouvps/32/974_2.png) [@iouvps](https://idcflare.com/u/iouvps)\
**Post date:** [2026 年4 月 23 日 01:51 UTC](https://idcflare.com/t/topic/81541/15 "2026-04-23T01:51:48Z")

</div>

这个还真没想到，感谢分享

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<div class="post-metadata">

**Author:** ![huangsiting](https://idcflare.com/user_avatar/idcflare.com/huangsiting/32/26892_2.png) [@huangsiting](https://idcflare.com/u/huangsiting)\
**Post date:** [2026 年4 月 23 日 02:00 UTC](https://idcflare.com/t/topic/81541/16 "2026-04-23T02:00:35Z")

</div>

学到了，感谢佬友分享

---

<div class="post-metadata">

**Author:** ![LET](https://idcflare.com/user_avatar/idcflare.com/let/32/18888_2.png) [@LET](https://idcflare.com/u/LET)\
**Post date:** [2026 年4 月 23 日 03:19 UTC](https://idcflare.com/t/topic/81541/17 "2026-04-23T03:19:42Z")

</div>

互相学习，思婷妹妹

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<div class="post-metadata">

**Author:** ![BL1ACHxinzhan](https://idcflare.com/user_avatar/idcflare.com/bl1achxinzhan/32/16485_2.png) [@BL1ACHxinzhan](https://idcflare.com/u/BL1ACHxinzhan)\
**Post date:** [2026 年4 月 23 日 09:15 UTC](https://idcflare.com/t/topic/81541/18 "2026-04-23T09:15:59Z")

</div>

![image](https://idcflare.com/uploads/default/original/3X/4/b/4bad5c24c1dd607a0ce3d9bc8b5c9fc505dbf7ce.png)  
他好像内存占用没啥变化啊？

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<div class="post-metadata">

**Author:** ![iglens](https://idcflare.com/user_avatar/idcflare.com/iglens/32/17986_2.png) [@iglens](https://idcflare.com/u/iglens)\
**Post date:** [2026 年4 月 29 日 10:28 UTC](https://idcflare.com/t/topic/81541/19 "2026-04-29T10:28:50Z")

</div>

感谢分享

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<div class="post-metadata">

**Author:** ![listen11](https://idcflare.com/user_avatar/idcflare.com/listen11/32/9940_2.png) [@listen11](https://idcflare.com/u/listen11)\
**Post date:** [2026 年4 月 30 日 23:58 UTC](https://idcflare.com/t/topic/81541/20 "2026-04-30T23:58:02Z")

</div>

感谢分享

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