Re: Formats for log files

[Josh Carter <public@xxxxxxxxxxxxxx>]

Bill,

Format of entries is:

  time, rate/latency, data direction, block size

Time: in milliseconds. Bandwidth logs are usually 500 or 1000ms apart; that can be controlled by the config file with "bwavgtime=[x ms]".

Rate/latency: for bandwidth, this is in KB/sec. For latency, it's microseconds.

Data direction: 0 is read, 1 is write.

Block size: block size of IOs in bytes.

For those using R to analyze log files, I have some useful stuff here:

  https://github.com/joshcarter/fio_tools

In particular, /analysis/fio_log_parsers.R has read_bw_log() and read_lat_log() functions.

Best regards,
Josh

On Feb 15, 2012, at 2:42 PM, Bill Hooper (whooper) wrote:

> Where can I find documentation for the format of the write_bw_log, write_iops_log, and write_lat_log output?
> 
> Bill Hooper
> Micron
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