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perf: downsized test data, increased SSH socket buffer, and made chunk size configurable

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- Reduced test data from 50MB to 25MB (test.py)
- Increased SSH socketpair buffer to 1MB via setsockopt (transport_ssh.c)
- Made chunk size configurable: new Config field, --chunk-size CLI flag,
  sent over wire, and used in scanner instead of DESIRED_CHUNK_SIZE
- Fixed DESIRED_CHUNK_SIZE macro parentheses (chunk.h)
This commit is contained in:
TapTap
2026-07-16 12:20:02 +02:00
parent 270623b90e
commit ca29109664
11 changed files with 41 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/client/client_cli.c
+6 -1
View File
@@ -26,6 +26,7 @@ static void print_usage(void) {
printf(" -f Enable sendfile (TCP only, not with -c or -s)\n");
printf(" -v, --verbose Enable debug logging\n");
printf(" -M, --preserve Preserve file metadata\n");
printf(" --chunk-size <n> Chunk size in bytes (default: %d)\n", DEFAULT_CHUNK_SIZE);
printf(" --source-dir <path> Source directory\n");
printf(" --dest-dir <path> Destination directory\n");
printf(" --save-to-disk Write received files to disk\n");
@@ -46,7 +47,7 @@ int main(int argc, char *argv[]) {
}
Config *config = config_create(str_dup("1.0.0"), NULL, NULL,
save_to_disk, false, false, false, false, 5, false);
save_to_disk, false, false, false, false, 5, false, 0);
int positional_args[2];
int positional_count = 0;
@@ -93,6 +94,10 @@ int main(int argc, char *argv[]) {
server_host = str_dup(argv[++i]);
} else if (strcmp(argv[i], "--server-port") == 0 && i + 1 < argc) {
server_port = atoi(argv[++i]);
} else if (strcmp(argv[i], "--chunk-size") == 0 && i + 1 < argc) {
unsigned long long val = strtoull(argv[++i], NULL, 10);
if (val > 0)
config->chunk_size = val;
} else if (strcmp(argv[i], "-v") == 0 || strcmp(argv[i], "--verbose") == 0) {
set_log_level(LOG_LEVEL_DEBUG);
} else if (argv[i][0] == '-') {
src/client/client_send.c
+2 -2
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@@ -82,7 +82,7 @@ static int scan_directory_multithreaded(void *pipeline_context) {
PipelineContextSender *context = (PipelineContextSender *)pipeline_context;
mtx_lock(&context->mutex_scanner);
DirectoryScanner *scanner =
directory_scanner_create(context->config->send_directory, context->config->use_metadata);
directory_scanner_create(context->config->send_directory, context->config->use_metadata, context->config->chunk_size);
mtx_unlock(&context->mutex_scanner);
Chunk *current_chunk;
@@ -138,7 +138,7 @@ int send_files(Config *config) {
client_connect(client, server_host, server_port);
}
config_send(client->file_descriptor, config);
DirectoryScanner *scanner = directory_scanner_create(config->send_directory, config->use_metadata);
DirectoryScanner *scanner = directory_scanner_create(config->send_directory, config->use_metadata, config->chunk_size);
Chunk *current_chunk;
while ((current_chunk = directory_scanner_next(scanner)) != NULL) {
if (!config->use_sendfile) {
src/client/scanner.c
+3 -2
View File
@@ -11,12 +11,13 @@
#include <sys/stat.h>
#include <unistd.h>
DirectoryScanner *directory_scanner_create(char *root_directory, bool use_metadata) {
DirectoryScanner *directory_scanner_create(char *root_directory, bool use_metadata, unsigned long long chunk_size) {
DirectoryScanner *scanner = malloc(sizeof(DirectoryScanner));
scanner->directories = queue_create(100, free);
scanner->current_dir = NULL;
scanner->current_path = NULL;
scanner->use_metadata = use_metadata;
scanner->chunk_size = chunk_size > 0 ? chunk_size : DESIRED_CHUNK_SIZE;
queue_enqueue(scanner->directories, str_dup(root_directory));
return scanner;
}
@@ -99,7 +100,7 @@ Chunk *directory_scanner_next(DirectoryScanner *scanner) {
file->metadata = file_metadata_create(&stats);
array_list_add(chunk_data, file);
chunk_data_size += file->data->size;
if (chunk_data_size > DESIRED_CHUNK_SIZE) {
if (chunk_data_size > scanner->chunk_size) {
free(cur_path);
return chunk_data_to_chunk(chunk_data);
}
src/client/scanner.h
+2 -1
View File
@@ -11,9 +11,10 @@ typedef struct {
DIR *current_dir;
char *current_path;
bool use_metadata;
unsigned long long chunk_size;
} DirectoryScanner;
DirectoryScanner *directory_scanner_create(char *root_directory, bool use_metadata);
DirectoryScanner *directory_scanner_create(char *root_directory, bool use_metadata, unsigned long long chunk_size);
Chunk *directory_scanner_next(DirectoryScanner *scanner);
void directory_scanner_destroy(DirectoryScanner *scanner);
src/shared/chunk.h
+1 -1
View File
@@ -6,7 +6,7 @@
#include <stdbool.h>
#include <sys/stat.h>
#define DESIRED_CHUNK_SIZE 10 * 1024 * 1024
#define DESIRED_CHUNK_SIZE (10 * 1024 * 1024)
typedef struct {
File **items;
src/shared/config.c
+5 -1
View File
@@ -10,7 +10,8 @@ Config *config_create(char *version, char *send_directory,
char *receive_directory, bool save_to_disk,
bool use_multithreading, bool use_chunk_serialization,
bool use_compression, bool use_metadata,
int compression_level, bool use_sendfile) {
int compression_level, bool use_sendfile,
unsigned long long chunk_size) {
Config *config = malloc(sizeof(Config));
config->version = version;
@@ -23,6 +24,7 @@ Config *config_create(char *version, char *send_directory,
config->use_metadata = use_metadata;
config->compression_level = compression_level;
config->use_sendfile = use_sendfile;
config->chunk_size = chunk_size > 0 ? chunk_size : DEFAULT_CHUNK_SIZE;
config->transport = TRANSPORT_TCP;
config->ssh_destination = NULL;
return config;
@@ -67,6 +69,7 @@ void config_send(int file_descriptor, Config *config) {
send_int(file_descriptor, config->use_compression);
send_int(file_descriptor, config->use_metadata);
send_int(file_descriptor, config->compression_level);
send_int(file_descriptor, (int)config->chunk_size);
send_int(file_descriptor, config->use_sendfile);
if (receive_status(file_descriptor) != STATUS_OK) {
perror("Error transmitting config!");
@@ -85,6 +88,7 @@ Config *config_receive(int file_descriptor) {
config->use_compression = receive_int(file_descriptor);
config->use_metadata = receive_int(file_descriptor);
config->compression_level = receive_int(file_descriptor);
config->chunk_size = (unsigned long long)receive_int(file_descriptor);
config->use_sendfile = receive_int(file_descriptor);
config->transport = TRANSPORT_TCP;
config->ssh_destination = NULL;
src/shared/config.h
+5 -1
View File
@@ -19,15 +19,19 @@ typedef struct Config {
bool use_sendfile;
bool use_metadata;
int compression_level;
unsigned long long chunk_size;
TransportType transport;
char *ssh_destination;
} Config;
#define DEFAULT_CHUNK_SIZE (10 * 1024 * 1024)
Config *config_create(char *version, char *send_directory,
char *receive_directory, bool save_to_disk,
bool use_multithreading, bool use_chunk_serialization,
bool use_compression, bool use_metadata,
int compression_level, bool use_sendfile);
int compression_level, bool use_sendfile,
unsigned long long chunk_size);
void config_delete(Config *config);
void config_send(int file_descriptor, Config *config);
Config *config_receive(int file_descriptor);
src/shared/transport_ssh.c
+6
View File
@@ -55,6 +55,12 @@ Client *client_connect_ssh(char *destination) {
exit(EXIT_FAILURE);
}
int buf_size = 1024 * 1024;
setsockopt(sv[0], SOL_SOCKET, SO_SNDBUF, &buf_size, sizeof(buf_size));
setsockopt(sv[0], SOL_SOCKET, SO_RCVBUF, &buf_size, sizeof(buf_size));
setsockopt(sv[1], SOL_SOCKET, SO_SNDBUF, &buf_size, sizeof(buf_size));
setsockopt(sv[1], SOL_SOCKET, SO_RCVBUF, &buf_size, sizeof(buf_size));
int exec_pipe[2];
if (pipe(exec_pipe) < 0) {
perror("pipe failed");