Hi, First pardon me if my questions are wrong or stupid. We have been using Qmail for a few months now. Overall we are very happy with Qmail. Just recently I installed the qmailanalog to analyze qmail logs. Our average concurrency is around 10 from zoverall and it has been in the range of (3, 18). Right now the total number of deliveries is less than 100,000 and we expect it double or triple in the near future. Our system is running Solarise 2.6 and is 300 MHz Sparc II and has 768 MB memory. The qmail is located on a RAID system with SCSI III. I have included one copy of results from zoverall and zddist with this email. My questions are 1) From zddist it seems that Qmail took 8 hours to deliver 95 % mails and almost 2 hours for the first 10%. Probablly I misinterpretted the meaning of the zddist result. Are they because that the number of failures and deferrals were high (14% of all deliveries)? Is it going to get worse when we double our email deliveries? 2) The instruction on zoverall says that average concurrency is "a good measure of how busy the mailer is", what is the acceptable average number? Say less then 1? Was our number of 17 too high? If it is, could someone tell us what we should do to improve our system performance? 3) The average message qtime is 20541 seconds (the lowerest at one day was 30 seconds). Is it because the failures of the deliveries? Thanks for your time. Scott Liu Software Developer 831 460 4318 P.S. 1) zoverall result 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: 79915 Recipients for completed messages: 79912 Total delivery attempts for completed messages: 81574 Average delivery attempts per completed message: 1.02076 Bytes in completed messages: 308819271 Bytes weighted by success: 289642486 Average message qtime (s): 20541 Total delivery attempts: 87057 success: 76036 failure: 4076 deferral: 6945 Total ddelay (s): 1629455636.245614 Average ddelay per success (s): 21430.054662 Total xdelay (s): 1062732.982771 Average xdelay per delivery attempt (s): 12.207324 Time span (days): 0.684 Average concurrency: 17.9827 2) zddist result Distribution of ddelays for successful deliveries Meaning of each line: The first pct% of successful deliveries all happened within doneby seconds. The average ddelay was avg. doneby avg pct 6276.99 2489.81 10 7115.49 2940.18 11 8421.76 3411.12 12 10015.50 3831.50 13 10215.10 4244.41 14 11112.50 4646.91 15 12013.90 5074.76 16 12861.80 5498.08 17 13786.00 5897.38 18 14324.20 6322.25 19 15093.00 6708.94 20 15721.00 7108.48 21 16807.00 7528.98 22 17821.60 7877.66 23 18305.20 8090.87 24 18387.60 8299.90 25 18442.30 8474.10 26 18511.40 8741.10 27 18654.30 8995.07 28 18876.30 9223.15 29 19171.20 9476.65 30 19420.50 9789.08 31 20682.90 10030.29 32 20859.10 10282.91 33 21195.10 10378.52 34 21216.50 10581.76 35 21310.20 10772.49 36 21371.20 11002.63 37 21509.30 11208.76 38 21690.10 11450.43 39 21908.80 11665.06 40 22076.70 11841.74 41 22217.50 11978.77 42 22314.70 12149.78 43 22432.10 12365.24 44 22792.90 12562.65 45 23036.50 12751.03 46 23212.90 12940.97 47 23429.30 13072.44 48 23525.90 13226.68 49 23670.40 13325.81 50 23716.90 13431.41 51 23769.10 13542.53 52 23825.70 13622.61 53 23851.60 13746.65 54 23988.60 13844.28 55 24041.90 13967.67 56 24129.50 14090.14 57 24203.60 14186.23 58 24246.80 14287.92 59 24302.00 14417.13 60 24550.10 14575.69 61 24918.60 14735.01 62 25142.00 14882.95 63 25349.00 15023.95 64 25504.40 15159.64 65 26261.50 15227.51 66 26286.00 15392.45 67 26571.10 15543.14 68 26823.60 15686.92 69 27023.50 15831.58 70 27207.50 16011.07 71 27667.80 16165.72 72 27874.10 16303.56 73 28145.10 16401.72 74 28235.50 16480.40 75 28308.50 16555.71 76 28371.30 16679.30 77 28472.50 16770.79 78 28542.80 16857.72 79 28579.70 16928.41 80 28606.50 16992.03 81 28631.40 17106.50 82 28808.60 17265.18 83 29111.50 17402.04 84 29365.90 17545.20 85 29593.80 17670.42 86 29732.10 17788.30 87 29871.00 17928.83 88 30015.00 17991.64 89 30047.90 18093.50 90 30128.00 18240.09 91 30408.80 18308.21 92 30436.80 18370.61 93 30462.60 18489.85 94 30555.20 18623.89 95 30763.00 18718.13 96 30824.60 18811.63 97 30920.10 19047.58 98 42927.80 19451.23 99 52067.70 19451.91 100 ..................................................................... TAPESTRY.NET - On Target, Online Recruiting 111 Mission St. Santa Cruz, CA 95060 Visit our web sites at: http://www.tapestry.net http://www.asia-net.com Bilingual Professionals http://www.developers.net Software Developers
