diff --git a/cube/doc/performance.md b/cube/doc/performance.md
index ac4bcf1bd414cc3a5f42b8b66e61acc74985ce3a..ebaf8ec80ab7931b5e3a94c57f13499bd60d33cd 100644
--- a/cube/doc/performance.md
+++ b/cube/doc/performance.md
@@ -8,7 +8,7 @@ Intel(R) Xeon(R) CPU E5-2650 v4 @ 2.20GHz
## 单Key高qps访问场景
一般来说实际预估服务生产环境下，单key访问场景较少，不过单机qps依然是一个比较重要的性能指标，故在下表提供了不同qps下单机Cube server性能指标。
| qps | 10w | 50w | 100w |
-|---|---|---|---|
+| --- | --- | --- | --- |
|kps|10w|50w|100w|
|cpu(top)| 6.5% | 38.3% | 71.4% |
|client端延迟| avg 196 us
50% 160 us
70% 188 us
90% 292 us
95% 419 us
97% 547 us
99% 835 us
99.9% 1556 us
99.99% 1779 us| avg 563 us
50% 342 us
70% 502 us
90% 1063 us
95% 1703 us
97% 2399 us
99% 4036 us
99.9% 7195 us
99.99% 7340 us| avg 4234 us
50% 3120 us
70% 5459 us
90% 10657 us
95% 14074 us
97% 16215 us
99% 19434 us
99.9% 29398 us
99.99% 33921 us|