AIO cause memory leak

Tony nginx at
Thu Dec 31 04:19:29 MSK 2009


On 12/30/2009 11:17 PM, Igor Sysoev wrote:
> On Wed, Dec 30, 2009 at 04:09:59PM +0800, Tony wrote:
>> I got the memory leak error on my linux server when I added 'aio on;' in
>> my nginx.conf,
>> The os is fedora 11(x86-64) and gentoo(x86-64),The kernel is 2.6.29+.
>> I've already set 'directio 2m; sendfile on; ' into nginx.conf.
>> The server is only serving static flv contents, These is 50-100MBytes
>> each flv file.
>> When 'aio on' is setting, the server's 4G memory and 2G swap were
>> consumed by nginx, work_processes just 4.
>> When I disable aio, each nginx processes used 30M memory only.
>> When aio is used, I know it should disable sendfile and use directio,
>> Why it use so many memory?
> It's a known bug. I will fix it in January.

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