I'm troubleshooting some performance issues and had a question..
When I run
statpd -p -devtype FC -sortcol 9 -d 5 I'm seeing a tremendous amount of I/O on each PD..
Attachment:
2019-02-25_9-27-16.jpg [ 181.31 KiB | Viewed 10878 times ]
However, when I run
statvv -sortcol 2,dec -ni I don't see the I/O match up.. I have over 6,000 I/O on my PD command and around 3,000 when I run the VV command.. I know these values are updating every 2 seconds but still there is a considerable difference..
I have a crap ton of queuing and trying to see exactly what I need that will fix it.. Simply adding some SSD? Enabling AO, etc.. I have one problem SQL server that is always crushing the I/O.. Wondering if I just address that, if possible, if it will fix it..
Attachment:
2019-02-25_9-29-11.jpg [ 128.64 KiB | Viewed 10878 times ]
Mainly though, I'm curious of the discrepancy above and would just like to understand it..
Thank you.