Re: [Firebird-devel] Still on the ext4 slowness...

[Philippe M. <mak...@fi...>]

Dmitry Yemanov  [2011-11-17 10:10] :
> 17.11.2011 12:59, Philippe Makowski wrote:
>>
>> I really wonder if we can't get MaxUnflushedWrites or something like
>> that under Linux too
>> I would be curious to do same test with this parameter under Linux
> 
> It works for all platforms, you just need to uncomment and set it up in 
> firebird.conf.
done

done
 with FW OFF and MaxUnflushedWrites = 100 and MaxUnflushedWriteTime = 5
 ext4
  noatime,async,data=ordered,barrier=1
  TPC-C Throughput: 1155.67 tpmC

as expected between
 5467.10 tpmC (FW OFF and noatime,async,data=ordered,barrier=1)
and
 165.11 tpmC (FW ON and noatime,async,data=ordered,barrier=1)

but only partially reliable :(