glusterfs.git/xlators/performance/io-cache/src/io-cache.c, branch v3.0.5rc1

performance/io-cache: make use of nano second resolution of mtime during cache validation.

2010-04-08T10:09:01+00:00

Signed-off-by: Raghavendra G 
Signed-off-by: Anand V. Avati 

BUG: 801 (Direct io-mode support and related changes in caching translators.)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=801

common-utils: gf_log2 handles 0 input

2010-02-22T16:51:44+00:00

Signed-off-by: Anand V. Avati 
Signed-off-by: Anand V. Avati 
Signed-off-by: Anand V. Avati 

BUG: 583 (filesystem access hangs while deleting large files)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=583

Added null checks in "fini"

2009-12-18T16:41:29+00:00

Signed-off-by: Harshavardhana 
Signed-off-by: Vijay Bellur 

BUG: 364 (Segfault in io-cache)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=364

fixes to compile on MacOSX (no fuse client)

2009-12-02T03:48:41+00:00

These changes are required to make GlusterFS compile on MacOSX (10.5).

Currently glusterfs server component alone will work over Mac, and it has
to be built with following options to ./configure.

 "bash$ ./configure --disable-fuse-client --disable-fusermount "

Signed-off-by: Amar Tumballi 
Signed-off-by: Anand V. Avati 

BUG: 361 (GlusterFS 3.0 should work on Mac OS/X)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=361

performance/io-cache: Hold locks on inode before creating rbt tree.

2009-12-02T01:52:47+00:00

Lock is held before creating a RBT in inode. Also, did some re-factoring.

Signed-off-by: Vijay Bellur 
Signed-off-by: Anand V. Avati 

BUG: 335 (Io-cache optimization)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=335

Changed rbthash_table_init() to take a mem-pool argument.

2009-11-26T12:32:25+00:00

Changes in libglusterfs/rbthash:

rbthash_table_init() now takes a mem-pool argument.
The mem-pool argument would be mutually exclusive to expected_entries.
If expected_entries is provided, mem-pool would be ignored and vice-versa.

Changes in io-cache:
1) Moved rbthash creation to readv.
2) rbthash makes use of 1 rbt instead of 4096
3) A global mem-pool is being used in place of a mem-pool per rbt.

Signed-off-by: Vijay Bellur 
Signed-off-by: Anand V. Avati 

BUG: 335 (Io-cache optimization)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=335

performance/io-cache: use STACK_UNWIND_STRICT for unwinding.

2009-11-24T12:36:54+00:00

Signed-off-by: Raghavendra G 
Signed-off-by: Anand V. Avati 

BUG: 269 (Add a specialized STACK_UNWIND macro for each FOP)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=269

performance/io-cache: don't use stat got in read_cbk if it is zero-filled.

2009-11-20T13:02:43+00:00

- translators like io-cache, read-ahead return a zero-filled stbuf in
    readv_cbk and usage of zero filled stat for cache validation is not
    correct.

Signed-off-by: Raghavendra G 
Signed-off-by: Anand V. Avati 

BUG: 376 (server-side io-cache is preventing client-side io-cache from working)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=376

performance/io-cache: change the data-types to be big enough to hold size of data flushed.

2009-10-30T08:49:53+00:00

Signed-off-by: Anand V. Avati 

BUG: 335 (Io-cache optimization)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=335

performance/io-cache: change the hash function used for rbtree based hash table.

2009-10-29T17:07:49+00:00

- the earlier hash function does not distribute pages uniformly for offsets that
    fit into 32 bits. The reason is that the hash function just xors the contents of
    the key 4 bytes at a time with the current value of hash. Hence for keys that
    fit into 32 bits, the hash will be the key itself. Since we are using the
    rounded_offset (which is a multiple of 128KB) as the key, the key will
    be exactly divisible by the number of buckets configured (4096) resolving all
    the pages into the first bucket.

Signed-off-by: Anand V. Avati 

BUG: 335 (Io-cache optimization)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=335