Message124963
I was able to observe the same issue:
I'm using Python 2.6.5 on Ubuntu 10.0.4 LTS. My system is 64 bit Intel Core I7, Quad core, Linux kernel 2.6.32-generic x86_64, Ubuntu EGLIBC 2.11.1-0ubuntu7.5.
A simple client TCP socket, which sends 35 bytes over to a server on localhost and receives 20 bytes in response, produces only 22 RPS. An identical application written in C gives me 7000 RPS. TCP_NODELAY is on on the server side. Turning on TCP_NODELAY on the client gives me ~500 RPS in Python (which I'm satisfied with, 'cause I think I then hit other bottlenecks).
Still, such low performance on by default can be surprising and hard to debug. |
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Date |
User |
Action |
Args |
2010-12-31 11:58:12 | kostja | set | recipients:
+ kostja, ggenellina, pitrou, giampaolo.rodola, Thorben, thorben, samslists |
2010-12-31 11:58:12 | kostja | set | messageid: <1293796692.25.0.742783860843.issue3766@psf.upfronthosting.co.za> |
2010-12-31 11:58:09 | kostja | link | issue3766 messages |
2010-12-31 11:58:09 | kostja | create | |
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