Julian Mehnle wrote:
Rob Kudyba wrote:For a lightly loaded server the differences are negligible. When load is high there is a marked difference between perl tools and MPP.
[...] MPP Free Edition is tons faster than many of the perl interfaces
to SpamAssassin or ClamAV and will greatly reduce the load on your
servers if you are using perl tools for this purpose and you have a
heavily loaded email server. [...]
"tons faster", "greatly reduce load"? Have you conducted any serious
benchmarks?
Test results ==========
1. Hardware: ========== CPU: Celeron 1.7Ghz Mem: 512Mb DDR HDD: 80Gb Seagate
2. Software ========= Linux: RedHat 9.0 Kernel: 2.4.20-8 Sendmail: 8.12.8
3. Tunning: ========= 3.1. hdparm parameters: -c3d1A1u1
root # hdparm -tT /dev/hda
/dev/hda: Timing buffer-cache reads: 1364 MB in 2.00 seconds = 680.40 MB/sec Timing buffered disk reads: 120 MB in 3.02 seconds = 39.73 MB/sec
4. Test Scenario:
-- Very similar results, fairly low load
Send messages to 100 users, 10 messages per connection . The message is test.msg included in mpp kit.
Delay between launching another connection 1.5 seconds.
1. Amavis wih clamascan as scanner -- unacceptable .. Sendmail get killed, most messages dropped
2. Amavis with clamd as scanner: .. 25 messages were not accepted because the server was overloaded
- no warning messages
- time: 2m31.684s
3. MPP with ClamAV as scanner: 3.1. timeout between connections 1.5 seconds - processing_threads = 5 - virus_scaner = clamav - no warning messages - time: 2m10.361s 0 dropped messages
In this test using Sendmail albeit, AmavisD could not complete the tests at all, just timed out the milter and dropped over 70% of email once the milter timed out.
3.2. timeout between connections 0.5 seconds - processing_threads = 5 - virus_scaner = clamav - no warning messages - time: 0m51.231s
Emperically we have many customers who see significant load drops when using our product with Clam over perl alternatives. We have references for this and it is easy to prove in your own environment. Small servers will benefit from ease use and completeness of the management interface, large customers will see a significant load decrease when using MPP over other alternatives.
-- Michael Katz Message Partners 271 North Ave Suite 1210 New Rochelle, NY 10801 http://messagepartners.com http://raeinternet.com Main +1-914-712-9050 x271 Direct +1-914-712-3333 Fax +1-914-206-9609 Mobile +1-914-525-2903 _______________________________________________ http://lurker.clamav.net/list/clamav-users.html
