Re: All clients impatient

[Jens Axboe <axboe@kernel.dk>]

On 2012-11-14 10:54, Jens Axboe wrote:
> On 2012-11-14 10:42, Jens Axboe wrote:
>>> 	For a while it was totting things up after four clients,
>>> which kind of made sense... now it's stuck on three.  Back when
>>> it made more sense I thought that maybe handle_ts only dealt with
>>> the information from a single thread for each client rather than
>>> the aggregate of multiple thread jobs.  That part seems to hold
>>> true even when it doesn't have the info for all the clients.
>>>
>>> 	Is this reporting the aggregate as expected?
>>> 	Is there a parameter change that I need to make to get
>>> the output I expect?
>>
>> As the job file is written, it will not aggregate results from a single
>> "instance" of the server. You would want group_reporting=1 to do that.
>> However, that will still give you one set of outputs per connection, not
>> one for all of them. Right now fio does not support collecting outputs
>> from all connections, a higher level group reporting if you will.
> 
> Actually, I misremembered that and didn't check before replying. It
> _will_ sum all clients, if it has more than one connection. But there's
> a bug where we race on client exit and dec the expected client count.
> Does it work better with the below patch?

Note that you still need group_reporting=1 in your job file, the all
clients report depend on getting only one set of stats from each client.
I'll look into fixing that up, too.

-- 
Jens Axboe