Thank you all for your replies. I have new questions here.
I'm trying to estimate performance of single ATS 'network' (main) thread
(hope I'm using correct term). My thread-related configuration:
ONFIG proxy.config.exec_thread.autoconfig INT 0
CONFIG proxy.config.exec_thread.autoconfig.scale FLOAT 1.000000
CONFIG proxy.config.exec_thread.limit INT 1
CONFIG proxy.config.accept_threads INT 1
CONFIG proxy.config.cache.threads_per_disk INT 0
CONFIG proxy.config.ssl.number.threads INT 0
CONFIG proxy.config.task_threads INT 1
#Caching is off:
CONFIG proxy.config.http.cache.http INT 0
I've found that memory-related options have a great impact on performance:
CONFIG proxy.config.thread.default.stacksize INT 536870912
CONFIG proxy.config.allocator.thread_freelist_size INT 524288
CONFIG proxy.config.system.mmap_max INT 5368709120
My problem is that default values for the variables given above are
extremely conservative. On the other hand, it's hard to pick up the good
values for such a great range. Especially while these options are not
really good documented.
So my questions are:
1) What should be good values for machine with 6GB RAM for the three
variables above (assuming that the only purpose of machine is running
single thread of ATS to forward traffic with high rate and minimal delay)?
2) Is there any guide/detailed documentation on these options?
3) May be there's some kind of formulas based on common sense that could
help to choose variables values based on proxy load (requests per second)?
Device under test is Ubuntu 12.04 LTS, 64 bit, 6GB RAM, expected load is
up to 15k requests per second.
TIA,
Pavel
On 10/17/2013 10:07 PM, Igor Galić wrote:
----- Original Message -----
Thank you Igor.
I've rebuilt ATS with hwloc and things became a bit better. Now I see
that load is being balanced fairly between configured number of threads
Thank you very much for this feedback.
I knew that this code paths have an impact (I've hacked bits of it too)
but since I always compile --with-hwloc, I've never saw the difference.
++i
Igor Galić
Tel: +43 (0) 664 886 22 883
Mail: [email protected]
URL: http://brainsware.org/
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