-----Original Message----- From: Michel Pelletier [mailto:michel@digicool.com] Sent: 17. juni 1999 16:48 To: 'Alexander Staubo'; Zope Mailing List (E-mail) Subject: RE: [Zope] Zope performance too low ?
-----Original Message----- From: Alexander Staubo [mailto:alex@mop.no] Sent: Thursday, June 17, 1999 10:36 AM To: Zope Mailing List (E-mail) Subject: RE: [Zope] Zope performance too low ?
-----Original Message----- From: zope-admin@zope.org [mailto:zope-admin@zope.org]On Behalf Of Michel Pelletier
Ouch. These extremely low transfer rates bother me. The theoretical bandwidth on a local machine transfer should be way, way higher. Otoh, your document was very small, so the stop/start, connect/teardown margins would be relatively high. I'd like to see benchmarks with longer (>3KB) documents.
I think these numbers are low because the trasfer was so fast and small, the mathmatical precision of the calculation was effected. I don't know how 'ab' calculates time, but it probably uses some less than high resolution system call.
I'm not familiar enough to Linux to say this for sure, but my guess is that it _would_ be using a high-resolution system timer. Otoh, if transfers really were fast (that is, faster than 10-11KB/sec), and the time taken to complete a request was low, the transfer time should explode exponentially. (Eg., 10K transferred in 10ms should yield a transfer rate 1MB/sec.) I'd be very interested to hear about what the CPU load was during the test run. If it's anything above 5-8% (average), that's not promising at all. The fact that adding more concurrent sessions did not regrade performance seems to indicate that CPU load was not too bad. I'm planning on putting together a simple httplib-built benchmark test just to get some raw numbers, although I'd like to try putting the timing logic inside Zope.
Yep, but ASP, PHP, Cold Fusion, etc. have proven to be very, very fast.
I can see PHP being convincingly 'proven' to be fast, but I have doubts about the validity *any* comercial company says about their closed source program. Have there been independant benchmarks?
Yes, at least for ASP, but I forget where. Perchance Byte Magazine, which used to lots of very interesting tests and benchmarks before they were gobbled up by CMP Media and folded into an online mag. :-/ -- Alexander Staubo http://www.mop.no/~alex/ "`Ford, you're turning into a penguin. Stop it.'" --Douglas Adams, _The Hitchhiker's Guide to the Galaxy_