- 3 madvise calls and a 16Mb mmapped buffer == ~5% install speedup. Wow.

- use db-4.0.14 final internally.

CVS patchset: 5215
CVS date: 2001/12/06 18:34:49

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/fsm.c b/lib/fsm.c
index 022669a54..21e2a9d96 100644
--- a/lib/fsm.c
+++ b/lib/fsm.c
@@ -768,6 +768,7 @@ static int writeFile(/*@special@*/ FSM_t fsm, int writeData)
     size_t pos = fdGetCpioPos(fsm->cfd);
     char * symbuf = NULL;
     int left;
+    int xx;
     int rc;
 
     st->st_size = (writeData ? ost->st_size : 0);
@@ -824,6 +825,7 @@ static int writeFile(/*@special@*/ FSM_t fsm, int writeData)
 	    rdbuf = fsm->rdbuf;
 	    fsm->rdbuf = (char *) mapped;
 	    fsm->rdlen = nmapped = st->st_size;
+	    xx = madvise(mapped, nmapped, MADV_DONTNEED);
 	}
 #endif
 
@@ -850,7 +852,8 @@ static int writeFile(/*@special@*/ FSM_t fsm, int writeData)
 
 #if HAVE_MMAP
 	if (mapped != (void *)-1) {
-	    /*@-noeffect@*/ (void) munmap(mapped, nmapped) /*@=noeffect@*/;
+	    xx = msync(mapped, nmapped, MS_ASYNC);
+	    /*@-noeffect@*/ xx = munmap(mapped, nmapped) /*@=noeffect@*/;
 	    fsm->rdbuf = rdbuf;
 	}
 #endif