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More fixes to prevent tardis from running out of disk space.

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This commit is contained in:
Sears Russell 2006-09-25 22:27:13 +00:00
parent e434c35203
commit 986ee57020
2 changed files with 27 additions and 11 deletions
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9
src/lladd/truncation.c
View file

@ -172,23 +172,24 @@ int truncateNow() {
lsn_t log_trunc = LogTruncationPoint(); lsn_t log_trunc = LogTruncationPoint();
if((xact_rec_lsn - log_trunc) > MIN_INCREMENTAL_TRUNCATION) { if((xact_rec_lsn - log_trunc) > MIN_INCREMENTAL_TRUNCATION) {
//printf("xact = %ld \t log = %ld\n", xact_rec_lsn, log_trunc); //fprintf(stderr, "xact = %ld \t log = %ld\n", xact_rec_lsn, log_trunc);
if((rec_lsn - log_trunc) > MIN_INCREMENTAL_TRUNCATION) { if((rec_lsn - log_trunc) > MIN_INCREMENTAL_TRUNCATION) {
fprintf(stderr, "Truncating now. rec_lsn = %ld, log_trunc = %ld\n", rec_lsn, log_trunc); // fprintf(stderr, "Truncating now. rec_lsn = %ld, log_trunc = %ld\n", rec_lsn, log_trunc);
fprintf(stderr, "Truncating to rec_lsn = %ld\n", rec_lsn);
forcePageFile(); forcePageFile();
LogTruncate(rec_lsn); LogTruncate(rec_lsn);
return 1; return 1;
} else { } else {
lsn_t flushed = LogFlushedLSN(); lsn_t flushed = LogFlushedLSN();
if(flushed - log_trunc > 2 * TARGET_LOG_SIZE) { if(flushed - log_trunc > 2 * TARGET_LOG_SIZE) {
fprintf(stderr, "Flushing dirty buffers: rec_lsn = %ld log_trunc = %ld flushed = %ld\n", rec_lsn, log_trunc, flushed); //fprintf(stderr, "Flushing dirty buffers: rec_lsn = %ld log_trunc = %ld flushed = %ld\n", rec_lsn, log_trunc, flushed);
dirtyPages_flush(); dirtyPages_flush();
page_rec_lsn = dirtyPages_minRecLSN(); page_rec_lsn = dirtyPages_minRecLSN();
rec_lsn = page_rec_lsn < xact_rec_lsn ? page_rec_lsn : xact_rec_lsn; rec_lsn = page_rec_lsn < xact_rec_lsn ? page_rec_lsn : xact_rec_lsn;
rec_lsn = (rec_lsn < flushed_lsn) ? rec_lsn : flushed_lsn; rec_lsn = (rec_lsn < flushed_lsn) ? rec_lsn : flushed_lsn;
fprintf(stderr, "Truncating to rec_lsn = %ld\n", rec_lsn); fprintf(stderr, "Flushed Dirty Buffers. Truncating to rec_lsn = %ld\n", rec_lsn);
forcePageFile(); forcePageFile();
LogTruncate(rec_lsn); LogTruncate(rec_lsn);

25
test/lladd/check_bufferManager.c
View file

@ -15,7 +15,8 @@
#define LOG_NAME "check_bufferManager.log" #define LOG_NAME "check_bufferManager.log"
#ifdef LONG_TEST #ifdef LONG_TEST
#define THREAD_COUNT 100
#define THREAD_COUNT 50
#define NUM_PAGES (MAX_BUFFER_SIZE * 2) // Otherwise, we run out of disk cache, and it takes forever to complete... #define NUM_PAGES (MAX_BUFFER_SIZE * 2) // Otherwise, we run out of disk cache, and it takes forever to complete...
#define PAGE_MULT 10 // This tells the system to only use every 10'th page, allowing us to quickly check >2 GB, >4 GB safeness. #define PAGE_MULT 10 // This tells the system to only use every 10'th page, allowing us to quickly check >2 GB, >4 GB safeness.
@ -31,9 +32,10 @@
#define READS_PER_THREAD (NUM_PAGES * 5) #define READS_PER_THREAD (NUM_PAGES * 5)
#define RECORDS_PER_THREAD (NUM_PAGES * 5) #define RECORDS_PER_THREAD (NUM_PAGES * 5)
#endif #endif
#define MAX_TRANS_LENGTH 100 // Number of writes per transaction. Keeping this low allows truncation.
void initializePages() { void initializePages() {
int i; int i;
@ -100,9 +102,13 @@ void * workerThreadWriting(void * q) {
int offset = *(int*)q; int offset = *(int*)q;
recordid rids[RECORDS_PER_THREAD]; recordid rids[RECORDS_PER_THREAD];
int xid = Tbegin();
int num_ops = 0;
for(int i = 0 ; i < RECORDS_PER_THREAD; i++) { for(int i = 0 ; i < RECORDS_PER_THREAD; i++) {
rids[i] = Talloc(-1, sizeof(int)); rids[i] = Talloc(xid, sizeof(int));
/* printf("\nRID:\t%d,%d\n", rids[i].page, rids[i].slot); */ /* printf("\nRID:\t%d,%d\n", rids[i].page, rids[i].slot); */
/* fflush(NULL); */ /* fflush(NULL); */
@ -111,12 +117,19 @@ void * workerThreadWriting(void * q) {
} }
if(num_ops == MAX_TRANS_LENGTH) {
num_ops = 0;
Tcommit(xid);
xid = Tbegin();
} else {
num_ops++;
}
/* sched_yield(); */ /* sched_yield(); */
} }
for(int i = 0; i < RECORDS_PER_THREAD; i++) { for(int i = 0; i < RECORDS_PER_THREAD; i++) {
int val = (i * 10000) + offset; int val = (i * 10000) + offset;
int k; int k;
Page * p = loadPage(-1, rids[i].page); Page * p = loadPage(xid, rids[i].page);
assert(p->id == rids[i].page); assert(p->id == rids[i].page);
@ -143,7 +156,7 @@ void * workerThreadWriting(void * q) {
Page * p; Page * p;
p = loadPage(-1, rids[i].page); p = loadPage(xid, rids[i].page);
readRecord(1, p, rids[i], &val); readRecord(1, p, rids[i], &val);
@ -161,6 +174,8 @@ void * workerThreadWriting(void * q) {
/* sched_yield(); */ /* sched_yield(); */
} }
Tcommit(xid);
return NULL; return NULL;
} }