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layout: blog
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title: "Announcing Etcd v3.6.0"
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date: 2025-05-15T15:00:00-08:00
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date: 2025-05-19T10:00:00-08:00
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slug: announcing-etcd-3.6
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author: >
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Benjamin Wang (VMware by Broadcom)
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- The default value of `--snapshot-count` has been reduced from 100,000 in v3.5 to 10,000 in v3.6. As a result, etcd v3.6 now retains only about 10% of the history records compared to v3.5.
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- Raft history is compacted more frequently, as introduced in [PR/18825][].
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_**Figure 1:** Memory usage comparison between etcd v3.5.20 and v3.6.0-rc.2 under different read/write ratios.
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Each subplot shows the memory usage over time with a specific read/write ratio. The red line represents etcd
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any single major change, but rather the cumulative effect of multiple minor enhancements. One such
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example is the optimization of the free page queries introduced in [PR/419][].
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_**Figure 2:** Read throughput comparison between etcd v3.5.20 and v3.6.0-rc.2 under a high write ratio. The
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read/write ratio is 0.0078, meaning 1 read per 128 writes. The right bar shows the percentage improvement
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in read throughput of v3.6.0-rc.2 over v3.5.20, ranging from 3.21% to 25.59%._
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_**Figure 3:** Read throughput comparison between etcd v3.5.20 and v3.6.0-rc.2 under a high read ratio.
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The read/write ratio is 8, meaning 8 reads per write. The right bar shows the percentage improvement in
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read throughput of v3.6.0-rc.2 over v3.5.20, ranging from 4.38% to 27.20%._
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_**Figure 4:** Write throughput comparison between etcd v3.5.20 and v3.6.0-rc.2 under a high write ratio. The
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read/write ratio is 0.0078, meaning 1 read per 128 writes. The right bar shows the percentage improvement
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in write throughput of v3.6.0-rc.2 over v3.5.20, ranging from 2.95% to 24.24%._
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_**Figure 5:** Write throughput comparison between etcd v3.5.20 and v3.6.0-rc.2 under a high read ratio.
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The read/write ratio is 8, meaning 8 reads per write. The right bar shows the percentage improvement in
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