So basically, what you are saying is that my volume is really too low to take
advantage of the persistent sniffer (and such may actually decrease my
performance), and I should stick with the non-service version. Is that right?
That is about what I thought (without the details of how sniffer works, I just
wanted to be sure).
Thanks, Pete.
Dan Horne
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Pete McNeil
> Sent: Tuesday, August 02, 2005 4:09 PM
> To: Dan Horne
> Subject: Re[2]: [sniffer] Sniffer taking a long time?
>
> After following through all of this and looking at the .stat
> file, I think I see what's going on.
>
> Now that it is running and producing a .stat file, the flow
> rate is very low. According to the stat data, about 6 msgs / minute.
>
> Note the poll and loop times are in the 450 - 550 ms range.
>
> SNF with the persistent engine is built for high throughput,
> but it's also built to play nice.
>
> The maximum poll time gets up to 2 seconds or so (sound familiar?)
>
> If there are no messages for a while, then everything slows
> down until the first message goes through. For that first
> message, the SNF client will probably wait about 2 seconds
> before looking for it's result because that's what the stat
> file will tell it to do.
>
> Since the next message probably won't come around for a few
> seconds, that next message will probably wait about 2 seconds also.
>
> If you were doing 6 messages a second then all of the times
> would be much lower and so would the individual delays.
>
> When you turn off the persistent instance, each new message
> causes a client to look and see if there are any other peers
> acting a servers... Since the messages are far and few
> between, the client will elect to be a server (momentarily),
> will find no work but it's own, will process it's own message
> and leave. -- This is the automatic peer-server mode. It will
> always work like this unless more than one message is being
> processed at the same moment.
>
> In peer-server mode, since there is nothing else going on and
> no persistent instance to coordinate the operations, each
> message will get processed as fast as the rulebase can be
> loaded and then the program will drop.
>
> When the persistent instance is introduced, it sets the pace
> - and sicne there are no other messages, each client will
> wait about 2 seconds (or half a second or so with the .stat
> file contents you show) before it begins looking for it's results.
>
> The server instance will also wait a bit before looking for
> new jobs so that the file system isn't constantly being scanned.
>
> Of course, if a burst of messages come through then the
> pacing will speed up as much as necessary to keep up with the volume.
>
> Hope this helps,
>
> _M
>
> On Tuesday, August 2, 2005, 3:38:52 PM, Dan wrote:
>
> DH> No, I followed your instructions exactly (and not for the first
> DH> time). I didn't add those extra values until today. Prior to
> DH> adding the AppDirectory value, the service was taking a minute to
> DH> scan emails; after adding it the scan time went to around 2
> DH> seconds. I can't get it any lower than that. Initially
> mine was
> DH> set up exactly as you said, with only "Application"
> containing the
> DH> path, authcode and persistent. Today after hearing no
> suggestions
> DH> from the list, and based on recent list messages
> mentioning the home
> DH> directory for the service, I looked at the srvany.exe
> doco to find
> DH> out how to give it a home directory.
> DH> That's when I added AppDirectory. I also saw and added
> DH> AppParameters at the same time and added those as well,
> though they
> DH> seem not to be needed.
> DH>
> DH> Prior to adding the AppDirectory value, I never got any
> .stat file
> DH> or any .SVR file in my sniffer dir. After adding that value and
> DH> starting the service those files appeared.
> DH>
> DH>
>
>
> DH> From: [EMAIL PROTECTED]
> DH> [mailto:[EMAIL PROTECTED] On Behalf Of Matt
> DH> Sent: Tuesday, August 02, 2005 3:24 PM
> DH> To: sniffer@SortMonster.com
> DH> Subject: Re: [sniffer] Sniffer taking a long time?
>
>
>
>
> DH> Dan,
>
> DH> There is no AppDirectory value on my servereither. The
> DH> Parameters key has only one value under it besides Default
> DH> which is "Application", and it contains exactly what I provided
> DH> below. Could it be that you tried to hard to get everything
> DH> right by tweaking theseadditional keys?
>
> DH> Something else. Did you make sure that theSniffer
> DH> service that you created was started? No doubt it will work if
> DH> you follow those directions to a T, and there aren't any issues
> DH> with yourserver apart from this.
>
> DH> Matt
>
>
>
> DH> Dan Horne wrote:
>
>
>
> DH> I removed the AppParameters value and put the authcode
> DH> an
