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Increase the WAL-mode SQLITE_PROTOCOL timeout to 10 seconds.

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FossilOrigin-Name: 2aeacf81df92b4fe5d1825c1dc1cd176b8af8bd9
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drh
2014-06-12 17:10:18 +00:00
parent 696964d0e5
commit 5b6e3b9781
3 changed files with 10 additions and 10 deletions
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6
src/wal.c
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@@ -2096,8 +2096,8 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){
** calls to sqlite3OsSleep() have a delay of 1 microsecond. Really this
** is more of a scheduler yield than an actual delay. But on the 10th
** an subsequent retries, the delays start becoming longer and longer,
** so that on the 100th (and last) RETRY we delay for 21 milliseconds.
** The total delay time before giving up is less than 1 second.
** so that on the 100th (and last) RETRY we delay for 323 milliseconds.
** The total delay time before giving up is less than 10 seconds.
*/
if( cnt>5 ){
int nDelay = 1; /* Pause time in microseconds */
@@ -2105,7 +2105,7 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){
VVA_ONLY( pWal->lockError = 1; )
return SQLITE_PROTOCOL;
}
if( cnt>=10 ) nDelay = (cnt-9)*238; /* Max delay 21ms. Total delay 996ms */
if( cnt>=10 ) nDelay = (cnt-9)*(cnt-9)*39;
sqlite3OsSleep(pWal->pVfs, nDelay);
}