# Disk performance in pod 10x lower then host. Cant find solution

**URL:** <https://discuss.kubernetes.io/t/disk-performance-in-pod-10x-lower-then-host-cant-find-solution/20508>\
**Category:** General Discussions\
**Created:** [July 4, 2022, 9:11pm UTC](https://discuss.kubernetes.io/t/disk-performance-in-pod-10x-lower-then-host-cant-find-solution/20508 "2022-07-04T21:11:44Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Alexey\_Mishurovsky](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.kubernetes.io/alexey_mishurovsky/32/9244_2.png) [@Alexey\_Mishurovsky](https://discuss.kubernetes.io/u/Alexey_Mishurovsky)\
**Post date:** [July 4, 2022, 9:11pm UTC](https://discuss.kubernetes.io/t/disk-performance-in-pod-10x-lower-then-host-cant-find-solution/20508/1 "2022-07-04T21:11:44Z")

</div>

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### Cluster information:

Kubernetes version: 1.23.6  
Cloud being used: bare metal cloud VmWare  
Installation method: manual  
Host OS: Centos 7  
CNI and version: containterd 1.6.4  
CRI and version: calico 3.23.0

Hi! we are facing the problem that we cant resolve for 2 weeks for now. Disk performance in pod is 10x slower then on host

Host Machine

```auto
[alex@k8s-node-03 ~]$ dd if=/dev/zero of=/tmp/test1.img bs=100M count=1
1+0 records in
1+0 records out
104857600 bytes (105 MB) copied, 0,0952872 s, 1,1 GB/s

[alex@k8s-node-03 ~]$ dd if=/dev/urandom of=/tmp/test1.img bs=100M count=1
0+1 records in
0+1 records out
33554431 bytes (34 MB) copied, 0,223062 s, 150 MB/s

```

Inside of the pod

```auto
/app # dd if=/dev/zero of=/tmp/test1.img bs=100M count=1
1+0 records in
1+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 1.00406 s, 104 MB/s
/app # dd if=/dev/urandom of=/tmp/test1.img bs=100M count=1
0+1 records in
0+1 records out
33554431 bytes (34 MB, 32 MiB) copied, 2.29815 s, 14.6 MB/s

```