If you are encountering silence on AutoDJ playback, slow installation or panel slowdown this can be cause by poor disk performance. We recommend you test your disk latency with the following command:
dd if=/dev/zero of=/tmp/test2.img bs=512 count=1000 oflag=dsync
This should complete almost instantly with the normal threshold for disk latency is about 10-80ms. 100ms would be considered poor performance, but we have seen customers hit 30-120 seconds of latency which can cause major issues.
[root@server ~]# dd if=/dev/zero of=/tmp/test2.img bs=512 count=1000 oflag=dsync
1000+0 records in
1000+0 records out
512000 bytes (512 kB, 500 KiB) copied, 36.6377 s, 14.0 kB/s
If you see poor disk latency, we recommend contacting your VPS provider regarding this as they could potentially help. In most cases however it is necessary to migrate to a server with better disk performance.
