afs: more cache truncation stats

[openafs.git] / src / afs / afs_dcache.c

diff --git a/src/afs/afs_dcache.c b/src/afs/afs_dcache.c
index 2a03f2b..41eeb84 100644 (file)
--- a/src/afs/afs_dcache.c
+++ b/src/afs/afs_dcache.c
@@ -95,6 +95,8 @@ afs_size_t afs_vmMappingEnd;  /* !< For large files (>= 2GB) the VM
 int afs_WaitForCacheDrain = 0;
 int afs_TruncateDaemonRunning = 0;
 int afs_CacheTooFull = 0;
+afs_uint32 afs_CacheTooFullCount = 0;
+afs_uint32 afs_WaitForCacheDrainCount = 0;
 
 afs_int32 afs_dcentries;       /*!< In-memory dcache entries */
 
@@ -395,6 +397,7 @@ void
 afs_MaybeWakeupTruncateDaemon(void)
 {
     if (!afs_CacheTooFull && afs_CacheIsTooFull()) {
+       afs_CacheTooFullCount++;
        afs_CacheTooFull = 1;
        if (!afs_TruncateDaemonRunning)
            afs_osi_Wakeup((int *)afs_CacheTruncateDaemon);
@@ -2435,6 +2438,8 @@ afs_GetDCache(struct vcache *avc, afs_size_t abyte,
            ReleaseReadLock(&avc->lock);
            while ((afs_blocksUsed - afs_blocksDiscarded) >
                   PERCENT(CM_WAITFORDRAINPCT, afs_cacheBlocks)) {
+               if (afs_WaitForCacheDrain == 0)
+                   afs_WaitForCacheDrainCount++;
                afs_WaitForCacheDrain = 1;
                afs_osi_Sleep(&afs_WaitForCacheDrain);
            }
@@ -3781,6 +3786,8 @@ afs_ObtainDCacheForWriting(struct vcache *avc, afs_size_t filePos,
                ReleaseWriteLock(&avc->lock);
                if (afs_blocksUsed - afs_blocksDiscarded >
                    PERCENT(CM_WAITFORDRAINPCT, afs_cacheBlocks)) {
+                   if (afs_WaitForCacheDrain == 0)
+                       afs_WaitForCacheDrainCount++;
                    afs_WaitForCacheDrain = 1;
                    afs_osi_Sleep(&afs_WaitForCacheDrain);
                }