Comment 1:

I guess it wouldn't be a problem in real use cases at server side but
not at intermediaries, issue #2449 might come back again probably.

Comment 2:

I guess it wouldn't be a problem in real use cases at server side but
not at intermediaries,  issue #2349  might come back again probably.

Comment 3:

The real issue would be unnecessary memory consumption.
E.g., one runtime.PollDesc (lt 200 bytes) per Page (ge 4096 bytes) acquired by
runtime.SysAlloc.

Comment 4:

The problem would be unnecessary memory consumption because
runtime.pollcache keeps consuming memory for runtime.PollDesc
when it requires. We should feed descriptors to the pollcache either
clean ones from the kernel or the spent ones by calling pollClose.
src/pkg/runtime/netpoll.goc:
static PollDesc*
allocPollDesc(void)
{
        PollDesc *pd;
        uint32 i, n;
        runtime·lock(&pollcache);
        if(pollcache.first == nil) {
                n = PageSize/sizeof(*pd);
                if(n == 0)
                        n = 1;
                // Must be in non-GC memory because can be referenced
                // only from epoll/kqueue internals.
                pd = runtime·SysAlloc(n*sizeof(*pd));
                for(i = 0; i < n; i++) {
                        pd[i].link = pollcache.first;
                        pollcache.first = &pd[i];
                }
        }
        pd = pollcache.first;
        pollcache.first = pd->link;
        runtime·unlock(&pollcache);
        return pd;
}

Comment 5:

This issue was closed by revision e13341e.

Status changed to Fixed.