ByteBuffer.setUseDirectBuffers(false);
ByteBuffer.setAllocator(new SimpleByteBufferAllocator());
and the one regarding send / receive buffer size.
--Fred
elihusmails wrote:
>
> what are the 3 changes?
>
>
> On Nov 15, 2007 8:50 AM, FredAtMina <[EMAIL PROTECTED]> wrote:
>
>>
>> Hi all,
>>
>> just to let you know: using the 3 small changes described in the
>> performance
>> posts, and using a join on the filterWrite, the client is now running
>> fine
>> on a machine with a load of 10 (Solaris, 2 CPUs). The trouble happens at
>> a
>> load of 14 or higher.
>> So we can consider that these 3 settings are really needed (should they
>> be
>> default ?).
>>
>> Thanks for your time. Thanks for you framework!
>>
>> Fred
>>
>>
>> FredAtMina wrote:
>> >
>> > Hi Trustin,
>> >
>> > unfortunately, as this involved some specific server behavior (which is
>> > not accessible), this is not possible.
>> > I ran some few tests, and noticed that in fact, the trouble is not only
>> > for the read, but also for the write (12" sometimes, in my test,
>> between
>> > the filterWrite and the data on the wire), even the idle notification
>> is
>> > late (by 8" in the same case, but this is "normal" as the read is late
>> > within the mina layer), so this may be, helas, only a side effect of
>> the
>> > load on the server (which is not related to the client using mina but
>> to
>> > other processes which can take lots of CPU cycle for a small period of
>> > time). I'm not sure how /if I can improve this. If I look at the logs I
>> > have, I have a "hole" of 10 seconds which means during this time,
>> nothing
>> > happens at the application layer. Is there something at the network
>> layer
>> > or is it only because the process doesn't have much CPU during this
>> short
>> > period of time I don't know. I'll take a look at the performance hints
>> you
>> > gave in some posts to see if this can help.
>> >
>> > Regards,
>> >
>> > --Fred
>> >
>> >
>> > Trustin Lee wrote:
>> >>
>> >> Hi Fred,
>> >>
>> >> I'd like to run the test by myself to track the problem down, because
>> >> it's not really easy to give any advice as you know.
>> >>
>> >> Trustin
>> >>
>> >> On Nov 14, 2007 7:37 AM, FredAtMina <[EMAIL PROTECTED]> wrote:
>> >>>
>> >>> Hi all,
>> >>>
>> >>> during some tests, I noticed that, under heavy load on the physical
>> >>> machine
>> >>> (load of 10 for 2 CPUs), data are entering the machine at time t0 but
>> >>> are
>> >>> available for messageReceived at t0 + N seconds, where N can be more
>> >>> than 10
>> >>> seconds...
>> >>> The test:
>> >>> - client sending 1 byte and reading some bytes
>> >>> (a) everything is fine when load is under 4 (roughly)
>> >>> (b) when server load is above 4, then delay appears
>> >>> I did a tcpdump to see data at the OS layer (data entering the OS)
>> >>> and common logging to see data at the messageReceived layer
>> >>>
>> >>> For write, delay occurs sometimes during the same period, but with
>> less
>> >>> than
>> >>> 1 second between filterWrite and data being sent by the server.
>> >>>
>> >>> As the data is small (1 byte written, few bytes read), but we have
>> 500+
>> >>> concurrent connections, is there any customization, through the API,
>> >>> that
>> >>> can be made.
>> >>>
>> >>> Regards,
>> >>>
>> >>> Fred
>> >>> --
>> >>> View this message in context:
>> >>>
>> http://www.nabble.com/Delay-between-data-reception-by-the-OS-and-by-messageReceived-tf4801019s16868.html#a13736157
>> >>> Sent from the Apache MINA Support Forum mailing list archive at
>> >>> Nabble.com.
>> >>>
>> >>>
>> >>
>> >>
>> >>
>> >> --
>> >> what we call human nature is actually human habit
>> >> --
>> >> http://gleamynode.net/
>> >> --
>> >> PGP Key ID: 0x0255ECA6
>> >>
>> >>
>> >
>> >
>>
>> --
>> View this message in context:
>> http://www.nabble.com/Delay-between-data-reception-by-the-OS-and-by-messageReceived-tf4801019s16868.html#a13768003
>> Sent from the Apache MINA Support Forum mailing list archive at
>> Nabble.com
>> .
>>
>>
>
>
> --
> --------------------------------
> The adjuration to be "normal" seems shockingly repellent to me; I see
> neither hope nor comfort in sinking to that low level. I think it is
> ignorance that makes people think of abnormality only with horror and
> allows
> them to remain undismayed at the proximity of "normal" to average and
> mediocre. For surely anyone who achieves anything is, essentially,
> abnormal.
> Dr. Karl Menninger
>
>
--
View this message in context:
http://www.nabble.com/Delay-between-data-reception-by-the-OS-and-by-messageReceived-tf4801019s16868.html#a13768664
Sent from the Apache MINA Support Forum mailing list archive at Nabble.com.
