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pgbackrest/test/src/module/performance/storageTest.c
David Steele c7a66ac1af Improve memory usage of mem contexts. 
Each mem context can track child contexts, allocations, and a callback. Before this change memory was allocated for tracking all three even if they were not used for a particular context. This made mem contexts unsuitable for String and Variant objects since they are plentiful and need to be as small as possible.

This change allows mem contexts to be configured to track any combination of child contexts, allocations, and a callback. In addition, the mem context can be configured to track a single child context and/or allocation, which saves memory and is a common use case.

Another benefit is that Variants can own objects (e.g. KeyValue) that they encapsulate. All of this makes memory accounting simpler because mem contexts have names while allocations do not. No more memory is used than before since Variants and Strings still had to store the memory context they were originally allocated in so they could be easily freed.

Update the String and Variant objects to use this new functionality. The custom strFree() and varFree() functions are no longer required and can now be a wrapper around objFree().

Lastly, this will allow strMove() and varMove() to be implemented and used in cases where strDup() and varDup() are being used to move a String or Variant to a new context. Since this will be a bit noisy it is saved for a future commit.
2022-05-18 10:52:01 -04:00

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/***********************************************************************************************************************************
Storage Performance
Test the performance of various storage functions, in particular when implemented remotely.
Generally speaking, the starting values should be high enough to "blow up" in terms of execution time if there are performance
problems without taking very long if everything is running smoothly. These starting values can then be scaled up for profiling and
stress testing as needed.
***********************************************************************************************************************************/
#include "common/harnessConfig.h"
#include "common/harnessFork.h"
#include "common/harnessStorage.h"
#include "common/crypto/hash.h"
#include "common/compress/gz/compress.h"
#include "common/compress/lz4/compress.h"
#include "common/io/filter/filter.h"
#include "common/io/filter/sink.h"
#include "common/io/bufferRead.h"
#include "common/io/bufferWrite.h"
#include "common/io/fdRead.h"
#include "common/io/fdWrite.h"
#include "common/io/io.h"
#include "common/type/object.h"
#include "protocol/client.h"
#include "protocol/server.h"
#include "storage/posix/storage.h"
#include "storage/remote/protocol.h"
/***********************************************************************************************************************************
Dummy callback functions
***********************************************************************************************************************************/
static void
storageTestDummyInfoListCallback(void *data, const StorageInfo *info)
{
(void)info;
// Do some work in the mem context to blow up the total time if this is not efficient, i.e. if the current mem context is not
// being freed regularly
memResize(memNew(16), 32);
// Increment callback total
(*(uint64_t *)data)++;
}
/***********************************************************************************************************************************
Driver to test storageInfoList
***********************************************************************************************************************************/
typedef struct
{
STORAGE_COMMON_MEMBER;
uint64_t fileTotal;
} StorageTestPerfInfoList;
static bool
storageTestPerfInfoList(
THIS_VOID, const String *path, StorageInfoLevel level, StorageInfoListCallback callback, void *callbackData,
StorageInterfaceInfoListParam param)
{
THIS(StorageTestPerfInfoList);
(void)path; (void)level; (void)param;
MEM_CONTEXT_TEMP_BEGIN()
{
MEM_CONTEXT_TEMP_RESET_BEGIN()
{
for (uint64_t fileIdx = 0; fileIdx < this->fileTotal; fileIdx++)
{
callback(callbackData, &(StorageInfo){.exists = true, .name = STRDEF("name")});
MEM_CONTEXT_TEMP_RESET(1000);
}
}
MEM_CONTEXT_TEMP_END();
}
MEM_CONTEXT_TEMP_END();
return this->fileTotal != 0;
}
/***********************************************************************************************************************************
Test filter to simulate throughput via rate limiting
***********************************************************************************************************************************/
typedef struct TestIoRate
{
MemContext *memContext; // Mem context of filter
uint64_t timeBegin; // Time when filter started processing data in ms
uint64_t byteTotal; // Total bytes processed
uint64_t bytesPerSec; // Rate in bytes per second to enforce
} TestIoRate;
static void
testIoRateProcess(THIS_VOID, const Buffer *input)
{
THIS(TestIoRate);
// Determine the elapsed time since the filter began processing data. The begin time is not set in the constructor because an
// unknown amount of time can elapse between the filter being created and acually used.
uint64_t timeElapsed = 0;
if (this->timeBegin == 0)
this->timeBegin = timeMSec();
else
timeElapsed = timeMSec() - this->timeBegin;
// Add buffer used to the byte total
this->byteTotal += bufUsed(input);
// Determine how many ms these bytes should take to go through the filter and sleep if greater than elapsed time
uint64_t timeRate = this->byteTotal * MSEC_PER_SEC / this->bytesPerSec;
if (timeElapsed < timeRate)
sleepMSec(timeRate - timeElapsed);
}
static IoFilter *
testIoRateNew(uint64_t bytesPerSec)
{
IoFilter *this = NULL;
OBJ_NEW_BEGIN(TestIoRate, .childQty = MEM_CONTEXT_QTY_MAX, .allocQty = MEM_CONTEXT_QTY_MAX)
{
TestIoRate *driver = OBJ_NEW_ALLOC();
*driver = (TestIoRate)
{
.memContext = memContextCurrent(),
.bytesPerSec = bytesPerSec,
};
this = ioFilterNewP(STRID5("test-io-rate", 0x2d032dbd3ba4cb40), driver, NULL, .in = testIoRateProcess);
}
OBJ_NEW_END();
return this;
}
/***********************************************************************************************************************************
Test Run
***********************************************************************************************************************************/
static void
testRun(void)
{
FUNCTION_HARNESS_VOID();
// *****************************************************************************************************************************
if (testBegin("storageInfoList()"))
{
TEST_TITLE_FMT("list %d million files", TEST_SCALE);
// One million files represents a fairly large cluster
ASSERT(TEST_SCALE <= 2000);
uint64_t fileTotal = (uint64_t)1000000 * TEST_SCALE;
HRN_FORK_BEGIN(.timeout = 60000)
{
HRN_FORK_CHILD_BEGIN()
{
// Create a basic configuration so the remote storage driver can determine the storage type
StringList *argList = strLstNew();
strLstAddZ(argList, "--" CFGOPT_STANZA "=test");
strLstAddZ(argList, "--" CFGOPT_PROCESS "=0");
hrnCfgArgRawStrId(argList, cfgOptRemoteType, protocolStorageTypeRepo);
HRN_CFG_LOAD(cfgCmdArchivePush, argList, .role = cfgCmdRoleRemote);
// Create a driver to test remote performance of storageInfoList() and inject it into storageRepo()
StorageTestPerfInfoList driver =
{
.interface = storageInterfaceTestDummy,
.fileTotal = fileTotal,
};
driver.interface.infoList = storageTestPerfInfoList;
Storage *storageTest = storageNew(strIdFromZ("test"), STRDEF("/"), 0, 0, false, NULL, &driver, driver.interface);
storageHelper.storageRepoWrite = memNew(sizeof(Storage *));
storageHelper.storageRepoWrite[0] = storageTest;
TEST_RESULT_PTR(storageRepoWrite(), storageTest, "check test storage is used");
// Setup handler for remote storage protocol
ProtocolServer *server = protocolServerNew(
STRDEF("storage test server"), STRDEF("test"), HRN_FORK_CHILD_READ(), HRN_FORK_CHILD_WRITE());
static const ProtocolServerHandler commandHandler[] = {PROTOCOL_SERVER_HANDLER_STORAGE_REMOTE_LIST};
protocolServerProcess(server, NULL, commandHandler, LENGTH_OF(commandHandler));
}
HRN_FORK_CHILD_END();
HRN_FORK_PARENT_BEGIN()
{
// Create client
ProtocolClient *client = protocolClientNew(
STRDEF("storage test client"), STRDEF("test"), HRN_FORK_PARENT_READ(0), HRN_FORK_PARENT_WRITE(0));
// Create remote storage
Storage *storageRemote = storageRemoteNew(
STORAGE_MODE_FILE_DEFAULT, STORAGE_MODE_PATH_DEFAULT, false, NULL, client, 1);
TimeMSec timeBegin = timeMSec();
// Storage info list
uint64_t fileCallbackTotal = 0;
TEST_RESULT_VOID(
storageInfoListP(storageRemote, NULL, storageTestDummyInfoListCallback, &fileCallbackTotal),
"list remote files");
TEST_RESULT_UINT(fileCallbackTotal, fileTotal, "check callback total");
TEST_LOG_FMT("list transferred in %ums", (unsigned int)(timeMSec() - timeBegin));
// Free client
protocolClientFree(client);
}
HRN_FORK_PARENT_END();
}
HRN_FORK_END();
}
// *****************************************************************************************************************************
if (testBegin("benchmark filters"))
{
// 4MB buffers are the current default
ioBufferSizeSet(4 * 1024 * 1024);
// 1MB is a fairly normal table size
ASSERT(TEST_SCALE <= 1024 * 1024 * 1024);
uint64_t blockTotal = (uint64_t)1 * TEST_SCALE;
// Set iteration
unsigned int iteration = 1;
// Set rate
uint64_t rateIn = 0; // MB/s (0 disables)
uint64_t rateOut = 0; // MB/s (0 disables)
// Get the sample pages from disk
Buffer *block = storageGetP(storageNewReadP(storagePosixNewP(HRN_PATH_REPO_STR), STRDEF("test/data/filecopy.table.bin")));
ASSERT(bufUsed(block) == 1024 * 1024);
// Build the input buffer
Buffer *input = bufNew((size_t)blockTotal * bufSize(block));
for (unsigned int blockIdx = 0; blockIdx < blockTotal; blockIdx++)
memcpy(bufPtr(input) + (blockIdx * bufSize(block)), bufPtr(block), bufSize(block));
bufUsedSet(input, bufSize(input));
// -------------------------------------------------------------------------------------------------------------------------
TEST_TITLE_FMT(
"%u iteration(s) of %zuMiB with %" PRIu64 "MB/s input, %" PRIu64 "MB/s output", iteration,
bufUsed(input) / bufUsed(block), rateIn, rateOut);
#define BENCHMARK_BEGIN() \
IoWrite *write = ioBufferWriteNew(bufNew(0)); \
#define BENCHMARK_FILTER_ADD(filter) \
ioFilterGroupAdd(ioWriteFilterGroup(write), filter);
#define BENCHMARK_END(addTo) \
if (rateOut != 0) \
ioFilterGroupAdd(ioWriteFilterGroup(write), testIoRateNew(rateOut * 1000 * 1000)); \
ioFilterGroupAdd(ioWriteFilterGroup(write), ioSinkNew()); \
ioWriteOpen(write); \
\
IoRead *read = ioBufferReadNew(input); \
if (rateIn != 0) \
ioFilterGroupAdd(ioReadFilterGroup(read), testIoRateNew(rateIn * 1000 * 1000)); \
ioReadOpen(read); \
\
uint64_t benchMarkBegin = timeMSec(); \
\
ioCopyP(read, write); \
\
ioReadClose(read); \
ioWriteClose(write); \
\
addTo += timeMSec() - benchMarkBegin;
// Start totals to 1ms just in case something takes 0ms to run
uint64_t copyTotal = 1;
uint64_t md5Total = 1;
uint64_t sha1Total = 1;
uint64_t sha256Total = 1;
uint64_t gzip6Total = 1;
#ifdef HAVE_LIBLZ4
uint64_t lz41Total = 1;
#endif // HAVE_LIBLZ4
for (unsigned int idx = 0; idx < iteration; idx++)
{
// -------------------------------------------------------------------------------------------------------------------------
TEST_LOG_FMT("copy iteration %u", idx + 1);
MEM_CONTEXT_TEMP_BEGIN()
{
BENCHMARK_BEGIN();
BENCHMARK_END(copyTotal);
}
MEM_CONTEXT_TEMP_END();
// -------------------------------------------------------------------------------------------------------------------------
TEST_LOG_FMT("md5 iteration %u", idx + 1);
MEM_CONTEXT_TEMP_BEGIN()
{
BENCHMARK_BEGIN();
BENCHMARK_FILTER_ADD(cryptoHashNew(HASH_TYPE_MD5_STR));
BENCHMARK_END(md5Total);
}
MEM_CONTEXT_TEMP_END();
// -------------------------------------------------------------------------------------------------------------------------
TEST_LOG_FMT("sha1 iteration %u", idx + 1);
MEM_CONTEXT_TEMP_BEGIN()
{
BENCHMARK_BEGIN();
BENCHMARK_FILTER_ADD(cryptoHashNew(HASH_TYPE_SHA1_STR));
BENCHMARK_END(sha1Total);
}
MEM_CONTEXT_TEMP_END();
// -------------------------------------------------------------------------------------------------------------------------
TEST_LOG_FMT("sha256 iteration %u", idx + 1);
MEM_CONTEXT_TEMP_BEGIN()
{
BENCHMARK_BEGIN();
BENCHMARK_FILTER_ADD(cryptoHashNew(HASH_TYPE_SHA256_STR));
BENCHMARK_END(sha256Total);
}
MEM_CONTEXT_TEMP_END();
// -------------------------------------------------------------------------------------------------------------------------
TEST_LOG_FMT("gzip -6 iteration %u", idx + 1);
MEM_CONTEXT_TEMP_BEGIN()
{
BENCHMARK_BEGIN();
BENCHMARK_FILTER_ADD(gzCompressNew(6));
BENCHMARK_END(gzip6Total);
}
MEM_CONTEXT_TEMP_END();
// -------------------------------------------------------------------------------------------------------------------------
#ifdef HAVE_LIBLZ4
TEST_LOG_FMT("lz4 -1 iteration %u", idx + 1);
MEM_CONTEXT_TEMP_BEGIN()
{
BENCHMARK_BEGIN();
BENCHMARK_FILTER_ADD(lz4CompressNew(1));
BENCHMARK_END(lz41Total);
}
MEM_CONTEXT_TEMP_END();
#endif // HAVE_LIBLZ4
}
// -------------------------------------------------------------------------------------------------------------------------
TEST_TITLE("results");
#define TEST_RESULT(name, total) \
TEST_LOG_FMT( \
"%s time %" PRIu64"ms, avg time %" PRIu64"ms, avg throughput: %" PRIu64 "MB/s", name, total, total / iteration, \
iteration * blockTotal * 1024 * 1024 * 1000 / total / 1000000);
TEST_RESULT("copy", copyTotal);
TEST_RESULT("md5", md5Total);
TEST_RESULT("sha1", sha1Total);
TEST_RESULT("sha256", sha256Total);
TEST_RESULT("gzip -6", gzip6Total);
#ifdef HAVE_LIBLZ4
TEST_RESULT("lz4 -1", lz41Total);
#endif // HAVE_LIBLZ4
}
FUNCTION_HARNESS_RETURN_VOID();
}
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