root@OPNsense:~ # iostat -x extended device statistics device r/s w/s kr/s kw/s ms/r ms/w ms/o ms/t qlen %b ada0 0 2 7.5 73.1 0 97 0 76 0 2 pass0 0 0 0.0 0.0 7 0 1 4 0 0 I don't see any description of "ms/*" columns in the manpage Excerpt: The extended iostat device display, with the -x flag specified, shows the following statistics: r/s read operations per second w/s write operations per second kr/s kilobytes read per second kw/s kilobytes write per second qlen transactions queue length svc_t average duration of transactions, in milliseconds %b % of time the device had one or more outstanding transactions
I'm seeing this on opnsense and freenas (both 11.1)
ms is short for milliseconds, which are 1/1000 of a second.
Sure, but if these are "milliseconds per read" what is the timeframe these are being measured in? Also not clear what o and t are (operations and transactions..?)
Seems like it was fixed only quite recently on CURRENT: https://svnweb.freebsd.org/base?view=revision&revision=338103 The extended iostat device display, with the -x flag specified, shows the following statistics: r/s read operations per second w/s write operations per second kr/s kilobytes read per second kw/s kilobytes write per second qlen transactions queue length ms/r average duration of read transactions, in milliseconds ms/w average duration of write transactions, in milliseconds ms/o average duration of all other transactions, in milliseconds ms/t average duration of all transactions, in milliseconds %b % of time the device had one or more outstanding transactions
I'm closing this with feedback timeout, as there was no reply to Conrad's comment since Sept. 2018.