Message 129885 - Python tracker

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Author	pitrou
Recipients	Aaron.Sherman, giampaolo.rodola, gregory.p.smith, neologix, pitrou, vstinner
Date	2011-03-02.12:38:21
SpamBayes Score	0.016735902
Marked as misclassified	No
Message-id	<1299069504.06.0.161687172641.issue11314@psf.upfronthosting.co.za>
In-reply-to

Content
Interestingly, reducing from the max open file descriptors from 8192 (my default) to 512 halves the runtime and solves the regression: $ ulimit -n 512 $ ./python bench_subprocess.py pid: 31631 Time: 4903.8 ms So, even though implemented in C, the file descriptor closing logic is still quite costly!

Interestingly, reducing from the max open file descriptors from 8192 (my default) to 512 halves the runtime and solves the regression:

$ ulimit -n
512
$ ./python bench_subprocess.py 
pid: 31631
Time: 4903.8 ms


So, even though implemented in C, the file descriptor closing logic is still quite costly!

History
Date	User	Action	Args
2011-03-02 12:38:24	pitrou	set	recipients: + pitrou, gregory.p.smith, vstinner, giampaolo.rodola, neologix, Aaron.Sherman
2011-03-02 12:38:24	pitrou	set	messageid: <1299069504.06.0.161687172641.issue11314@psf.upfronthosting.co.za>
2011-03-02 12:38:21	pitrou	link	issue11314 messages
2011-03-02 12:38:21	pitrou	create