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Re: [hylafax-users] batching almost there
On Jul 29, 2005, at 5:13 PM, Bodo Meissner wrote:
Am 2005.07.29 08:15 schrieb(en) Lee Howard:
The original author seems to have wanted that "jitter" there to
prevent the same events from happening over time... I guess he
believed that by randomizing the reschedule time that some time-
related problems could be avoided.
Think of two Hylafax systems with default (or otherwise identical)
settings and only one modem line each.
Assume system A has a job for receiver X that always fails and will
be re-scheduled until a limit is reached.
Further assume System B wants to send a fax to system A and just
tries to send it when A is trying to send to X.
A's job to X fails and A re-schedules the job.
B will get a busy signal and re-schedule the job.
With identical settings and without jitter it may be possible that
several or all retries on System B will get a busy signal because A
is retrying in the same interval. With jitter this is very unlikely.
but the whole point is that argument goes out of the window, because
you can schedule the time of say 50 faxes without 'jitter', just by
setting them to the same "TTS"
also the fact is that , because the "TTS" is at a milisecond level on
the submitting of jobs, the chance of 2 remote hylafax systems :
1. having exactly the same "TTS"
2. having the same "retry time"
3. triggering the jobs at exactly the same time.
is going to be fairly remote.
The other thing is i think the "jitter" is a myth!!! ( see the last job)
As a point on how good this is looking, here is 3 recent jobs!! 1+1+2:
Your facsimile job to 0-86449887 was completed successfully.
Pages: 1
Receiver: <UNSPECIFIED>
Quality: Fine
Page Width: 210 (mm)
Page Length: 297 (mm)
Signal Rate: 14400 bit/s
Data Format: 2-D MMR
Remote Equipment: Canon
Remote Station:
Submitted From: 192.168.2.65
JobID: 38
GroupID: 38
CommID: c000000065
Processing time was 2:15.
Your facsimile job to 0-86449887 was completed successfully.
Pages: 1
Receiver: <UNSPECIFIED>
Quality: Fine
Page Width: 210 (mm)
Page Length: 297 (mm)
Signal Rate: 14400 bit/s
Data Format: 2-D MMR
Remote Equipment: Canon
Remote Station:
Submitted From: 192.168.2.65
JobID: 37
GroupID: 37
CommID: c000000065
Processing time was 2:15.
Your facsimile job to 0-86449887 was completed successfully.
Pages: 2
Receiver: <UNSPECIFIED>
Quality: Fine
Page Width: 210 (mm)
Page Length: 297 (mm)
Signal Rate: 14400 bit/s
Data Format: 2-D MMR
Remote Equipment: Canon
Remote Station:
Submitted From: 192.168.2.65
JobID: 39
GroupID: 39
CommID: c000000065
Processing time was 2:15.
I sent 4 pages on 3 separate jobs for the cost of 1 phone call, and a
reduction in tied up phone lines & modems. this has to be a good way
to go , for batching anyway.
but see the next 2 jobs as well, the last one is the most interesting
and again!!
Your facsimile job to 0-86777432 was completed successfully.
Pages: 1
Receiver:
Quality: Fine
Page Width: 210 (mm)
Page Length: 297 (mm)
Signal Rate: 9600 bit/s
Data Format: 2-D MR
Remote Equipment: Sharp/Olivetti Sharp UX-460
Remote Station:
Submitted From: 192.168.2.65
JobID: 41
GroupID: 41
CommID: c000000064
Processing time was 3:53.
Your facsimile job to 0-86777432 was completed successfully.
Pages: 1
Receiver:
Quality: Fine
Page Width: 210 (mm)
Page Length: 297 (mm)
Signal Rate: 9600 bit/s
Data Format: 2-D MR
Remote Equipment: Sharp/Olivetti Sharp UX-460
Remote Station:
Submitted From: 192.168.2.65
JobID: 40
GroupID: 40
CommID: c000000064
Processing time was 3:53.
Your facsimile job to 0-86777432 was completed successfully.
Pages: 2
Receiver:
Quality: Fine
Page Width: 210 (mm)
Page Length: 297 (mm)
Signal Rate: 9600 bit/s
Data Format: 2-D MR
Remote Equipment: Sharp/Olivetti Sharp UX-460
Remote Station:
Submitted From: 192.168.2.65
JobID: 42
GroupID: 42
CommID: c000000064
Processing time was 3:53.
*****************************************************
now here is the real interesting one!!!, note the RETRY TIME!! 18:01
Your facsimile job to 00769-2671302 was not sent because:
Busy signal detected
The job will be retried at 18:01.
---- Transcript of session follows ----
Jul 29 17:43:21.82: [22760]: SESSION BEGIN 000000063 7692671302
Jul 29 17:43:21.82: [22760]: HylaFAX (tm) Version 4.2.2beta1
Jul 29 17:43:21.82: [22760]: SEND FAX: JOB 35 DEST 00769-2671302
COMMID 000000063 DEVICE '/dev/ttyS1'
Jul 29 17:43:21.82: [22760]: <-- [12:AT+FCLASS=1\r]
Jul 29 17:43:21.83: [22760]: --> [2:OK]
Jul 29 17:43:21.83: [22760]: DIAL 007692671302
Jul 29 17:43:21.83: [22760]: <-- [17:ATDT007692671302\r]
Jul 29 17:43:29.29: [22760]: --> [4:BUSY]
Jul 29 17:43:29.29: [22760]: SEND FAILED: JOB 35 DEST 00769-2671302
ERR Busy signal detected
Jul 29 17:43:29.29: [22760]: <-- [5:ATH0\r]
Jul 29 17:43:29.30: [22760]: --> [2:OK]
Jul 29 17:43:29.30: [22760]: SESSION END
( not sent because the last job was busy)
Your facsimile job to 00769-2671302 was not sent because:
<no reason recorded>
The job will be retried at 18:01.
---- Transcript of session follows ----
No transcript available.
Your facsimile job to 00769-2671302 was not sent because:
<no reason recorded>
The job will be retried at 18:01.
---- Transcript of session follows ----
No transcript available.
**** THIS IS THE RE-TRY*******
****IT ACTUALLY EVEN BATCHED THE RETRIES*******
1+1+1
Your facsimile job to 00769-2671302 was completed successfully.
Pages: 1
Receiver: 2671302
Quality: Fine
Page Width: 210 (mm)
Page Length: 297 (mm)
Signal Rate: 14400 bit/s
Data Format: 2-D MMR
Remote Equipment: Canon Laser Class 9000 Series
Remote Station: NEWSHENGDA
Submitted From: 192.168.2.65
JobID: 34
GroupID: 34
CommID: c000000066
Processing time was 1:57.
Your facsimile job to 00769-2671302 was completed successfully.
Pages: 1
Receiver: 2671302
Quality: Fine
Page Width: 210 (mm)
Page Length: 297 (mm)
Signal Rate: 14400 bit/s
Data Format: 2-D MMR
Remote Equipment: Canon Laser Class 9000 Series
Remote Station: NEWSHENGDA
Submitted From: 192.168.2.65
JobID: 36
GroupID: 36
CommID: c000000066
Processing time was 1:57.
Your facsimile job to 00769-2671302 was completed successfully.
Pages: 1
Receiver: 2671302
Quality: Fine
Page Width: 210 (mm)
Page Length: 297 (mm)
Signal Rate: 14400 bit/s
Data Format: 2-D MMR
Remote Equipment: Canon Laser Class 9000 Series
Remote Station: NEWSHENGDA
Calls: 2 (total phone calls placed)
Submitted From: 192.168.2.65
JobID: 35
GroupID: 35
CommID: c000000066
Processing time was 1:57.
WOW!!
I think we can say batching is definatly here!!
Bodo
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