Dave Sill <[EMAIL PROTECTED]> writes on 17 August 1999 at 08:16:42 -0400
> Bruce Schneier's CRYPTO-GRAM, a monthly newsletter sent to over 20,000
> subscribers, uses qmail and ezmlm. This a high-profile list and a
> juicy hacker target.
Yep, it does. With regard to which, I'm having trouble understanding
the qmailanalog statistics I get out of this.
Crypto-gram was sent yesterday in the early evening. As of now, I
have only 20 messages in the queue. There was a tiny "pending" file
generated by matchup last night, and only one of the messages was
crypto-gram related (so most of the deliveries had to happen before
the log cutoff last night). Here are the statistics on yesterday and
today so far (zoverall):
Basic statistics
qtime is the time spent by a message in the queue.
ddelay is the latency for a successful delivery to one recipient---the
end of successful delivery, minus the time when the message was queued.
xdelay is the latency for a delivery attempt---the time when the attempt
finished, minus the time when it started. The average concurrency is the
total xdelay for all deliveries divided by the time span; this is a good
measure of how busy the mailer is.
Completed messages: 1620
Recipients for completed messages: 4971
Total delivery attempts for completed messages: 5126
Average delivery attempts per completed message: 3.1642
Bytes in completed messages: 15183142
Bytes weighted by success: 31852134
Average message qtime (s): 197.403
Total delivery attempts: 25933
success: 24576
failure: 289
deferral: 1068
Total ddelay (s): 66248917.435193
Average ddelay per success (s): 2695.675351
Total xdelay (s): 391021.65
Average xdelay per delivery attempt (s): 15.078137
Time span (days): 8.0081
Average concurrency: 0.565141
I'm confused by the "completed messages" statistic; is the low value
because it only lists messages for which all deliveries have been
completed (a guess based on the name)? Why does anybody *care* about
such a bizarrely constrained statistic? Also, how do you weight bytes
by success?
A quick check with qmail-qread shows that indeed there are a very few
pending deliveries on crypto-gram. When those finally clear out, one
way or the other, will I suddenly get an *immense* lump in my
"recipients for completed messages" that day? As I say, I think it's
a silly number to compute.
(concurrencyremote on this system is 50; it's a Cyrix 166 running
Linux with 96 meg of ram, IDE disks, no RAID. I'm amazed how well it
digests big lumps like the crypto-gram mailing. A normal day here is
a couple thousand deliveries.)
--
David Dyer-Bennet ***NOTE ADDRESS CHANGES*** [EMAIL PROTECTED]
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