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separate lock from common grid to avoid epoll contention (#20180)

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epoll contention on TCP causes latency build-up when
we have high volume ingress. This PR is an attempt to
relieve this pressure.

upstream issue https://github.com/golang/go/issues/65064
It seems to be a deeper problem; haven't yet tried the fix
provide in this issue, but however this change without
changing the compiler helps. 

Of course, this is a workaround for now, hoping for a
more comprehensive fix from Go runtime.
This commit is contained in:
Harshavardhana
2024-07-29 11:10:04 -07:00
committed by GitHub
parent 6651c655cb
commit a17f14f73a
13 changed files with 121 additions and 31 deletions
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7
cmd/generic-handlers.go
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@@ -247,8 +247,11 @@ func guessIsRPCReq(req *http.Request) bool {
if req == nil {
return false
}
if req.Method == http.MethodGet && req.URL != nil && req.URL.Path == grid.RoutePath {
return true
if req.Method == http.MethodGet && req.URL != nil {
switch req.URL.Path {
case grid.RoutePath, grid.RouteLockPath:
return true
}
}
return (req.Method == http.MethodPost || req.Method == http.MethodGet) &&