[erlang-questions] +A recommendations
Thu Jun 22 14:07:51 CEST 2017
we in Flussonic work with disks a lot: record video and stream video files
During a long time we had +A 100 default setting to allow making a lot of
simultaneous requests to disk.
This setting is ok if one wants to stream about 10 Gbit/s from local HDDs
and SSDs to network and ok for 20 HDD.
But on small amount of disks (1-2) this is bad, because regular sysadmin is
frightened when he see LA 80.
There is no way to dynamically change +A pool size from erlang code, so it
must be done from launching shell script.
I think that it may be a good idea to find list of block devices and take
5*Count. Is it ok?
What experience do other people have here?
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