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Adjust pg_test_fsync to always do XLOG_BLCKSZ-sized writes, rather than

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always 8k writes, per suggestion from Tom.  Also adjust open_sync output
layout.
This commit is contained in:
Bruce Momjian 2011-01-25 22:18:24 -05:00
parent a91c950658
commit 64bc872761
1 changed files with 11 additions and 13 deletions
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24
contrib/pg_test_fsync/pg_test_fsync.c
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@ -20,9 +20,7 @@
*/
#define FSYNC_FILENAME "./pg_test_fsync.out"
#if XLOG_BLCKSZ != 8 * 1024 /* 8k */
#error Unknown block size for test.
#endif
#define XLOG_BLCKSZ_K (XLOG_BLCKSZ / 1024)
#define LABEL_FORMAT " %-32s"
#define NA_FORMAT LABEL_FORMAT "%18s"
@ -61,10 +59,10 @@ main(int argc, char *argv[])
test_open();
/* Test using 1 8k write */
/* Test using 1 XLOG_BLCKSZ write */
test_sync(1);
/* Test using 2 8k writes */
/* Test using 2 XLOG_BLCKSZ writes */
test_sync(2);
test_open_syncs();
@ -177,9 +175,9 @@ test_sync(int writes_per_op)
bool fs_warning = false;
if (writes_per_op == 1)
printf("\nCompare file sync methods using one 8k write:\n");
printf("\nCompare file sync methods using one %dk write:\n", XLOG_BLCKSZ_K);
else
printf("\nCompare file sync methods using two 8k writes:\n");
printf("\nCompare file sync methods using two %dk writes:\n", XLOG_BLCKSZ_K);
printf("(in wal_sync_method preference order, except fdatasync\n");
printf("is Linux's default)\n");
@ -396,11 +394,11 @@ test_open_syncs(void)
printf("(This is designed to compare the cost of writing 16k\n");
printf("in different write open_sync sizes.)\n");
test_open_sync(" 1 16k open_sync write", 16);
test_open_sync(" 2 8k open_sync writes", 8);
test_open_sync(" 4 4k open_sync writes", 4);
test_open_sync(" 8 2k open_sync writes", 2);
test_open_sync("16 1k open_sync writes", 1);
test_open_sync("16k open_sync write", 16);
test_open_sync(" 8k open_sync writes", 8);
test_open_sync(" 4k open_sync writes", 4);
test_open_sync(" 2k open_sync writes", 2);
test_open_sync(" 1k open_sync writes", 1);
}
/*
@ -519,7 +517,7 @@ test_non_sync(void)
/*
* Test a simple write without fsync
*/
printf("\nNon-sync'ed 8k writes:\n");
printf("\nNon-sync'ed %dk writes:\n", XLOG_BLCKSZ_K);
printf(LABEL_FORMAT, "write");
fflush(stdout);