Xfs
Saturday, October 19 2013
Netgear ReadyNAS 6 Ultra
[16:38:13] matt [wronka.org]/Psi+ Periodically, my MythTV DVR has trouble pushing video to the front-ends. Jumping into the backend, it turns-out that this is because it's only pulling about 1MB/s from the Netgear Ready NAS 6 Ultra. I tried a variety of things, such as defragging the XFS filesystem I'm using on it, to no avail. Having a little more time this morning and nothing important to record, I spent a little more time looking at it, and realized that I was getting between 58ms and ~85ms ping times to the NAS which was directly connected over a 1Gb link (previously there was a combination 1Gb switch and WiFi AP in between I had blamed). 58ms is exceptoinally bad for this connection, and originally I thought I must have entered the address of my receiver connected via a WiFi link, but after tripple checking the receiver was actually < 2ms and the directly connected Ready NAS was magnitudes slower.
Rebooting the NAS immediately brought the latency back down to just over 0.2ms average and disk I/O back up to ~30MB/s, a huge change from before but a very dissapointing result. It looks like I ran into this last in early September from the NAS's log history.
[16:38:13] matt [wronka.org]/Psi+ Periodically, my MythTV DVR has trouble pushing video to the front-ends. Jumping into the backend, it turns-out that this is because it's only pulling about 1MB/s from the Netgear Ready NAS 6 Ultra. I tried a variety of things, such as defragging the XFS filesystem I'm using on it, to no avail. Having a little more time this morning and nothing important to record, I spent a little more time looking at it, and realized that I was getting between 58ms and ~85ms ping times to the NAS which was directly connected over a 1Gb link (previously there was a combination 1Gb switch and WiFi AP in between I had blamed). 58ms is exceptoinally bad for this connection, and originally I thought I must have entered the address of my receiver connected via a WiFi link, but after tripple checking the receiver was actually < 2ms and the directly connected Ready NAS was magnitudes slower.
Rebooting the NAS immediately brought the latency back down to just over 0.2ms average and disk I/O back up to ~30MB/s, a huge change from before but a very dissapointing result. It looks like I ran into this last in early September from the NAS's log history.