Re: [PATCH v1 0/2] _rpc_dtablesize: decrease to fix excessive memory usage

[Steve Dickson <steved@redhat.com>]

On 10/31/23 9:13 AM, Zhuohao Bai wrote:
> In the client code, the function _rpc_dtablesize() is used to determine the
> memory allocation for the __svc_xports array.
> 
> However, some operating systems (including the recent Manjaro OS) can have
> _SC_OPEN_MAX values as high as 1073741816, which can cause the __svc_xports
> array to become too large. This results in the process being killed.
> 
> There is a limit to the maximum number of files. To avoid this problem, a
> possible solution is to set the size to the lesser of 1024 and this value to
> ensure that the array space for open files is not too large, thus preventing
> the process from terminating.
> 
> Also discovered that some users have taken action on the issue. It is necessary
> to address this for all users. Ultimately, we determined that adjusting the
> size value of _rpc_dtablesize() and streamlining the existing user code would
> be the most effective solution.
> 
> 
> ---
> Changes in v1:
> Clean up the existing code in user
> 
> ---
> Links:
> RFC:https://lore.kernel.org/linux-nfs/tencent_E6816C9AF53E61BA5E0A313BBE5E1D19B00A@qq.com/T/#u
> 
> 
> Zhuohao Bai (2):
>    _rpc_dtablesize: Decrease the value of size.
>    _rpc_dtablesize: Cleaning up the existing code
> 
>   src/rpc_dtablesize.c | 2 ++
>   src/svc.c            | 2 --
>   2 files changed, 2 insertions(+), 2 deletions(-)
> 
Both Committed... (tag: libtirpc-1-3-5-rc2)

steved.