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125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/* How fast can we read a file usng the cachetable interface. */
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#ident "Copyright (c) 2007, 2008 Tokutek Inc. All rights reserved."
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#include "test.h"
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#include "includes.h"
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#include "toku_time.h"
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enum { KEYLIMIT = 4, BLOCKSIZE=1<<20, N=2048};
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static void f_flush (CACHEFILE f,
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int UU(fd),
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CACHEKEY key,
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void *value,
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void *extra __attribute__((__unused__)),
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long size,
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BOOL write_me,
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BOOL keep_me,
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BOOL for_checkpoint __attribute__((__unused__))) {
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assert(size==BLOCKSIZE);
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if (write_me) {
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toku_os_full_pwrite(toku_cachefile_get_and_pin_fd(f), value, BLOCKSIZE, key.b);
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toku_cachefile_unpin_fd(f);
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}
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if (!keep_me) {
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toku_free(value);
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}
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}
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static int f_fetch (CACHEFILE f,
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int UU(fd),
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CACHEKEY key,
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u_int32_t fullhash __attribute__((__unused__)),
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void**value,
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long *sizep,
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int *dirtyp,
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void*extraargs __attribute__((__unused__))) {
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void *buf = toku_malloc(BLOCKSIZE);
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int r = pread(toku_cachefile_get_and_pin_fd(f), buf, BLOCKSIZE, key.b);
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toku_cachefile_unpin_fd(f);
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assert(r==BLOCKSIZE);
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*value = buf;
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*sizep = BLOCKSIZE;
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*dirtyp = 0;
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return 0;
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}
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static int
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pe_callback (
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void *brtnode_pv __attribute__((__unused__)),
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long bytes_to_free __attribute__((__unused__)),
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long* bytes_freed,
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void* extraargs __attribute__((__unused__))
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)
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{
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*bytes_freed = 0;
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return 0;
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}
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const char fname[] = __FILE__ ".dat";
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CACHETABLE t;
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CACHEFILE f;
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static void open_file (void ) {
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int r;
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r = toku_create_cachetable(&t, KEYLIMIT, ZERO_LSN, NULL_LOGGER); assert(r==0);
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r = toku_cachetable_openf(&f, t, fname, O_RDWR|O_CREAT, S_IRWXU|S_IRWXG|S_IRWXO); assert(r==0);
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}
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static void writeit (void) {
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struct timeval start, end;
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gettimeofday(&start, 0);
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int i, r;
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for (i=0; i<N; i++) {
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void *buf = toku_malloc(BLOCKSIZE);
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CACHEKEY key = make_blocknum(i*BLOCKSIZE);
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u_int32_t fullhash = toku_cachetable_hash(f, key);
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int j;
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for (j=0; j<BLOCKSIZE; j++) ((char*)buf)[j]=(char)((i+j)%256);
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r = toku_cachetable_put(f, key, fullhash, buf, BLOCKSIZE, f_flush, f_fetch, pe_callback, 0); assert(r==0);
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r = toku_cachetable_unpin(f, key, fullhash, CACHETABLE_CLEAN, BLOCKSIZE); assert(r==0);
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}
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gettimeofday(&end, 0);
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double diff = toku_tdiff(&end, &start);
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if (verbose)
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printf("writeit %d blocks of size %d in %6.2fs at %6.2fMB/s\n", N, BLOCKSIZE, diff, (N/diff)*(BLOCKSIZE*1e-6));
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}
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static void readit (void) {
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struct timeval start, end;
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struct timeval start_usertime, start_systime;
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struct timeval end_usertime, end_systime;
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toku_os_get_process_times(&start_usertime, &start_systime);
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gettimeofday(&start, 0);
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int i, r;
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void *block;
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long current_size;
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for (i=0; i<N; i++) {
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CACHEKEY key = make_blocknum(i*BLOCKSIZE);
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u_int32_t fullhash = toku_cachetable_hash(f, key);
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r=toku_cachetable_get_and_pin(f, key, fullhash, &block, ¤t_size, f_flush, f_fetch, pe_callback, 0); assert(r==0);
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r=toku_cachetable_unpin(f, key, fullhash, CACHETABLE_CLEAN, BLOCKSIZE); assert(r==0);
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}
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r = toku_cachefile_close(&f, 0, FALSE, ZERO_LSN); assert(r == 0);
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r = toku_cachetable_close(&t); assert(r == 0);
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gettimeofday(&end, 0);
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toku_os_get_process_times(&end_usertime, &end_systime);
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double diff = toku_tdiff(&end, &start);
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double udiff = toku_tdiff(&end_usertime, &start_usertime);
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double sdiff = toku_tdiff(&end_systime, &start_systime);
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if (verbose)
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printf("readit %d blocks of size %d in %6.2fs at %6.2fMB/s user=%6.2fs sys=%6.2fs\n",
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N, BLOCKSIZE, diff, (N/diff)*(BLOCKSIZE*1e-6), udiff, sdiff);
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}
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int
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test_main (int argc __attribute__((__unused__)), const char *argv[] __attribute__((__unused__))) {
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open_file();
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writeit();
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readit();
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unlink(fname);
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return 0;
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}
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