Proxy performance fix #3440
Proxy performance fix #3440
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Please follow the PR template - most importantly, add a separate commit with a relicensing grant: https://github.com/zeromq/libzmq/blob/master/.github/PULL_REQUEST_TEMPLATE.md |
perf/proxy_thr.cpp
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| #if defined ZMQ_HAVE_WINDOWS | ||
| (void) buffer; // unsupported | ||
| #else | ||
| pthread_setname_np (pthread_self (), buffer); |
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setname is not posix, please remove all this thread name changing as it breaks the build on !Linux
perf/proxy_thr.cpp
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| if (str_) { | ||
| if (len != strnlen (buffer, sizeof (buffer))) { | ||
| printf ( | ||
| "invalid response string length: expected %zu, received %zu", len, |
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../perf/proxy_thr.cpp:123:78: error: ISO C++ does not support the ‘z’ gnu_printf length modifier [-Werror=format]
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Please don't add fixup commits, squash it into the original, or it will break bisecting. Then force push |
perf/proxy_thr.cpp
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| void recv_string_expect_success (void *socket_, const char *str_, int flags_) | ||
| { | ||
| const unsigned long len = str_ ? strlen (str_) : 0; |
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@emtr breaks the build on windows:
C:\projects\libzmq\perf\proxy_thr.cpp(110): warning C4267: 'initializing' : conversion from 'size_t' to 'const unsigned long', possible loss of data [C:\projects\build_libzmq\proxy_thr.vcxproj]
perf/proxy_thr.cpp
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| if (len != strnlen (buffer, sizeof (buffer))) { | ||
| printf ( | ||
| "invalid response string length: expected %lu, received %lu", len, | ||
| strnlen (buffer, sizeof (buffer))); |
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@emtr breaks the build with clang:
perf/proxy_thr.cpp:130:48: error: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'size_t {aka unsigned int}' [-Werror=format=]
strnlen (buffer, sizeof (buffer)));
Improve performance of the proxy forwarding batch of message. Add throughput benchmark for proxy. Fix valgrind error reported on unitialized vars RELICENSE: Add emtr grant
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Fixed issues (broken builds, formatting); squashed commits |
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thanks! |
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Thanks |
As suggested by user somdoron on zeromq-dev mailing list, I implemented the zmq_recv with DONT_WAIT and a benchmark for proxy throughput.
The benchmark shows an important increase of forwarding performance, on my system from ~290kpps to >3Mpps.
Moreover the amount of calls to syscall poll is much lower:
After: