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Add memory profiling to multio-server
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,120 @@ | ||
| #include "MemoryInformation.h" | ||
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| #include "eckit/exception/Exceptions.h" | ||
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| #include <regex> | ||
| #include <ios> | ||
| #include <sstream> | ||
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| #include <sys/mman.h> | ||
| #include <fcntl.h> | ||
| #include <unistd.h> | ||
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| namespace { | ||
| using namespace multio::util; | ||
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| const std::map<InformationTypes, std::regex> extractors = { | ||
| { InformationTypes::PeakVirtualMemory, std::regex("VmPeak:\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::VirtualMemory, std::regex("VmSize:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::LockedVirtualMemory, std::regex("VmLck:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::PinnedVirtualMemory, std::regex("VmPin:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::MaximumResidentMemory, std::regex("VmHWM:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::ResidentMemory, std::regex("VmRSS:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::AnonimousResidentMemory, std::regex("RssAnon:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::FileMappingResidentMemory, std::regex("RssFile:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::SharedResidentMemory, std::regex("RssShmem:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::DataVirtualMemory, std::regex("VmData:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::StackVirtualMemory, std::regex("VmStk:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::TextSegmentVirtualMemory, std::regex("VmExe:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::SharedLibraryTextVirtualMemory, std::regex("VmLib:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::PageTableEntryVirtualMemory, std::regex("VmPTE:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::SecondLevelPageTableEntryVirtualMemory, std::regex("VmPMD:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::SwappedOutVirtualMemory, std::regex("VmSwap:..\\s*(\\d*)\\s(\\w*)") }, | ||
| { InformationTypes::HugeTablesMemory, std::regex("HugetlbPages:..\\s*(\\d*)\\s(\\w*)") }, | ||
| }; | ||
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| InformationSizeUnits toSizeUnit(const std::string& unit) { | ||
| switch (std::toupper(unit[0])) { | ||
| case 'K': | ||
| return InformationSizeUnits::KiloBytes; | ||
| case 'M': | ||
| return InformationSizeUnits::MegaBytes; | ||
| case 'G': | ||
| return InformationSizeUnits::GigaBytes; | ||
| default: | ||
| return InformationSizeUnits::Bytes; | ||
| } | ||
| } | ||
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| std::map<InformationTypes, InformationItem> createMemoryInformation() { | ||
| const auto maximumStatusStringLengthInChars = 16 * 1024; | ||
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| std::map<InformationTypes, InformationItem> information; | ||
| int fd = -1; | ||
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| try { | ||
| const auto path = "/proc/self/status"; | ||
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| fd = open(path, O_RDONLY); | ||
| if (fd < 0) { | ||
| throw eckit::FailedSystemCall("open", Here()); | ||
| } | ||
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| auto mem = reinterpret_cast<char *>(alloca(maximumStatusStringLengthInChars)); | ||
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| ssize_t read_bytes = read(fd, mem, maximumStatusStringLengthInChars); | ||
| ssize_t already_read = read_bytes; | ||
| while ((read_bytes > 0) && (already_read < maximumStatusStringLengthInChars)) { | ||
| read_bytes = read(fd, mem + already_read, maximumStatusStringLengthInChars - already_read); | ||
| if ((read_bytes < 0) && (errno != EAGAIN)) { | ||
| throw eckit::FailedSystemCall("read", Here()); | ||
| } | ||
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| already_read += read_bytes; | ||
| } | ||
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| close(fd); | ||
| fd = -1; | ||
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| auto statusContents = std::istringstream(mem); | ||
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| auto line = reinterpret_cast<char *>(alloca(maximumStatusStringLengthInChars)); | ||
| while (statusContents.getline(line, maximumStatusStringLengthInChars)) { | ||
| const auto lineText = std::string(line); | ||
| for (auto const& extractor : extractors) { | ||
| std::smatch match; | ||
| if (std::regex_search(lineText, match, extractor.second)) { | ||
| information.emplace(extractor.first, | ||
| InformationItem { std::atoi(match[1].str().c_str()), toSizeUnit(match[2].str()) }); | ||
| } | ||
| } | ||
| } | ||
| } catch (...) { | ||
| if (fd >= 0) { | ||
| close(fd); | ||
| fd = -1; | ||
| } | ||
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| throw; | ||
| } | ||
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| return information; | ||
| } | ||
| } | ||
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| namespace multio::util { | ||
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| MemoryInformation::MemoryInformation() : memInfo_(createMemoryInformation()) {} | ||
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| std::vector<InformationTypes> MemoryInformation::getAvailableKeys() const { | ||
| std::vector<InformationTypes> keys; | ||
| keys.reserve(memInfo_.size()); | ||
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| for (const auto& item : memInfo_) { | ||
| keys.emplace_back(item.first); | ||
| } | ||
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| return keys; | ||
| } | ||
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| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,74 @@ | ||
| /* | ||
| * (C) Copyright 1996- ECMWF. | ||
| * | ||
| * This software is licensed under the terms of the Apache Licence Version 2.0 | ||
| * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. | ||
| * In applying this licence, ECMWF does not waive the privileges and immunities | ||
| * granted to it by virtue of its status as an intergovernmental organisation nor | ||
| * does it submit to any jurisdiction. | ||
| */ | ||
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| /// @author Razvan Aguridan | ||
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| /// @date Jun 2024 | ||
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| #pragma once | ||
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| #include <cstdint> | ||
| #include <map> | ||
| #include <vector> | ||
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| namespace multio::util { | ||
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| enum class InformationTypes { | ||
| PeakVirtualMemory, | ||
| VirtualMemory, | ||
| LockedVirtualMemory, | ||
| PinnedVirtualMemory, | ||
| MaximumResidentMemory, | ||
| ResidentMemory, | ||
| AnonimousResidentMemory, | ||
| FileMappingResidentMemory, | ||
| SharedResidentMemory, | ||
| DataVirtualMemory, | ||
| StackVirtualMemory, | ||
| TextSegmentVirtualMemory, | ||
| SharedLibraryTextVirtualMemory, | ||
| PageTableEntryVirtualMemory, | ||
| SecondLevelPageTableEntryVirtualMemory, | ||
| SwappedOutVirtualMemory, | ||
| HugeTablesMemory | ||
| }; | ||
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| enum class InformationSizeUnits { | ||
| Bytes, | ||
| KiloBytes, | ||
| MegaBytes, | ||
| GigaBytes | ||
| }; | ||
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| struct InformationItem { | ||
| uint64_t Value; | ||
| InformationSizeUnits Unit; | ||
| }; | ||
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| class MemoryInformation { | ||
| public: | ||
| MemoryInformation(); | ||
| ~MemoryInformation() = default; | ||
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| std::vector<InformationTypes> getAvailableKeys() const; | ||
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| const InformationItem& get(InformationTypes info) const { return memInfo_.at(info); } | ||
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| private: | ||
| MemoryInformation(MemoryInformation const&) = delete; | ||
| MemoryInformation& operator=(MemoryInformation const&) = delete; | ||
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| MemoryInformation(MemoryInformation const&&) = delete; | ||
| MemoryInformation& operator=(MemoryInformation const&&) = delete; | ||
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| const std::map<InformationTypes, InformationItem> memInfo_; | ||
| }; | ||
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| } // namespace multio::util |
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