Are you using the poller class on the recieving side or sending side? What version of netmq are you using? Can you make a code that reproduce? On Mar 15, 2014 2:10 AM, "Giacomo Tesio" <[email protected]> wrote:
> Ehm sorry... The low load connection (PUB2) publish 50-500 msg *each day*with > an average size of 200 bytes. > > > On Sat, Mar 15, 2014 at 1:09 AM, Giacomo Tesio <[email protected]> wrote: > >> Thanks for your feedback. >> >> The heavy load connection (PUB1) publish 50-100 msg/s (with few daily >> peaks at 1000 msg/s). Such messages are between 50 bytes and 200 bytes in >> size (almost 3/4 of messages are 200 bytes long). >> The low load connection (PUB2) publish 50-500 msg/s with an average size >> of 200 bytes. >> >> I have exactly 2 subscribers for PUB1 and 1 subscriber for PUB2. >> >> As for the latency, all connections are local (127.0.0.1, with a port for >> PUB1 and another for PUB2). I would use a simpler protocol than tcp, since >> all I need is an ipc channel, but I'm on windows 7. >> >> >> Giacomo >> PS: on HWM and pub/sub: I'm not an expert, but it looks reliable from my >> tests. Isn't it? >> >> >> >> On Fri, Mar 14, 2014 at 7:43 PM, Gerry Steele <[email protected]>wrote: >> >>> On a tangent... Does high watermark=0 really make pub/ sub fully >>> reliable? Wasn't my understanding. Could be wrong. >>> >>> How big are the messages you are sending? >>> >>> Can you reproduce on same hardware with a hello world pub sub for >>> messages of the same size? >>> On 14 Mar 2014 15:06, "Giacomo Tesio" <[email protected]> wrote: >>> >>>> Hi, I'm getting 5 to 10 seconds delay in on a pub/sub socket with low >>>> load (in a context with heavy load on other sockets). >>>> >>>> I'm using NetMQ on Windows 7, with tcp transport on 127.0.0.1 (indeed >>>> it should be ipc, but it's not supported on Windows AFAIK). >>>> >>>> This is the topology: >>>> >>>> We have Server A, Client B and Client C. >>>> >>>> Server binds a PUB with heavy load (let's call it PUB1), publishing >>>> 50-100 msg/s with few daily peaks at 1000 msg/s. >>>> >>>> Server binds a PUB with small load (let's call it PUB2). publishing >>>> 50-500 msg *each day*. Note however that these messages are sent in >>>> groups of 1 to 5 in a few milliseconds. >>>> >>>> Client B connect with a SUB socket to PUB1, >>>> Client C connects with two SUB socket to PUB1 and PUB2. >>>> >>>> My issue is that when a group of messages is sent in PUB2, the first is >>>> received almost instantly from Client C, but the others are received >>>> seconds after, at seconds of distances. >>>> >>>> For example, here are a few times from today problems. >>>> >>>> Sent from Server A -> Received from Client C >>>> 09:00:59.608 -> 09:01:05.643 >>>> 09:01:00.055 -> 09:01:05.64 >>>> 09:01:00.117 -> 09:01:10.928 >>>> 09:01:02.883 -> 09:01:16.172 >>>> 09:01:05.541 -> 09:01:18.754 >>>> >>>> >>>> How can I reduce this delay? >>>> I tried to increase the ThreadPoolSize up to the number of CPUs, but >>>> without success. >>>> Note that I (must) have HighWaterMark = 0 on every socket (I can't >>>> loose messages), but the machine is full of free memory (4 GB are always >>>> free) and never use more than 40% of each cpu. >>>> >>>> >>>> Giacomo >>>> >>>> >>>> _______________________________________________ >>>> zeromq-dev mailing list >>>> [email protected] >>>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev >>>> >>>> >>> _______________________________________________ >>> zeromq-dev mailing list >>> [email protected] >>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev >>> >>> >> > > _______________________________________________ > zeromq-dev mailing list > [email protected] > http://lists.zeromq.org/mailman/listinfo/zeromq-dev > >
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