On 26/01/22 03:55, Ralf Hildebrandt wrote:
* Francesco Chemolli:
See configure --max-filedescriptors
...
configure: forcing default of 131072 filedescriptors (user-forced)
checking Default FD_SETSIZE value... 1024
checking for getrlimit... yes
checking for setrlimit... yes
checking Maximum number of filedescriptors we can open... 32768
configure: Default number of filedescriptors: 131072
...
Yes, I set "ulimit -n 131072" before running configure
The ./configure has a 2^15 limit for the _default_ FD number. Runtime
should allow configuring larger values later (sans bugs).
It also depends on the I/O module selected for runtime. Make sure you
avoid select(2) and poll(2) for large FD numbers.
select(2) is limited to 1024.
poll(2) allows numbers large enough to hit RAM and CPU limits on speed.
epoll(2) is limited to ~3.5 million.
kqueue(2) is technically "unlimited" but YMMV regarding bugs etc.
Amos
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