glusterfs.git/xlators/performance, branch v3.3.0qa23

core: utilize mempool for frame->local allocations

2012-02-21T10:42:09+00:00

in each translator, which uses 'frame->local', we are using
GF_CALLOC/GF_FREE, which would be costly considering the
number of allocation happening in a lifetime of 'fop'. It
would be good to utilize the mem pool framework for xlator's
local structures, so there is no allocation overhead.

Change-Id: Ida6e65039a24d9c219b380aa1c3559f36046dc94
Signed-off-by: Amar Tumballi 
BUG: 765336
Reviewed-on: http://review.gluster.com/2772
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

features/md-cache: Change strdup to gf_strdup

2012-02-21T10:28:54+00:00

Change-Id: Ic96e7d38b988efab49f723c9d1d46f65037a84ed
BUG: 795682
Reviewed-on: http://review.gluster.com/2783
Reviewed-by: Anand Avati 
Tested-by: Gluster Build System

Honor O_SYNC etc. properly.

2012-02-21T10:25:22+00:00

Change-Id: I3dd90fe230386ad5571c5e639f27460e3d003f0e
BUG: 773100
Signed-off-by: Jeff Darcy 
Reviewed-on: http://review.gluster.com/2626
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

performance/md-cache: Add mem_acct_init

2012-02-21T07:22:12+00:00

Change-Id: I1b91ee0bde160762548c39646ceb96c3c778e06c
BUG: 795651
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.com/2778
Reviewed-by: Vijay Bellur 
Tested-by: Gluster Build System

md-cache: replace stat-prefetch with md-cache in a backward compatible way

2012-02-21T05:14:49+00:00

- preserve CLI set option key as "performance.stat-prefetch"
- create a symlink stat-prefetch.so to point to md-cache.so

Change-Id: Ib95e7c30073f13ae04c39e9466967ba1db5a0614
BUG: 765785
Reviewed-on: http://review.gluster.com/2714
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

md-cache: meta-data caching translator

2012-02-21T05:14:28+00:00

This is a metadata caching translator which is well integrated with
glusterfs core framework and leverages some of the recent protocol
changes to do a better job at caching.

- It uses the attributes returned along callbacks of all calls to
  update its attribute cache as frequently as possible without
  issuing calls on its own (i.e, very low overhead)

- It caches attributes returned via readdirp into the inode contexts
  corresponding to those entries (i.e, well integrated)

- It caches and updates xattrs and not just inode attributes (i.e,
  eliminates the need for a separate xattr-prefetch translator)

In its current form it has a timeout based consistency model

Change-Id: I891f6225c1a4c08bb111e287571d5f6d326dbe97
BUG: 765785
Reviewed-on: http://review.gluster.com/2713
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

iobuf: use 'iobuf_get2()' to get variable sized buffers

2012-02-20T08:46:27+00:00

added 'TODO' in places where it is missing.

Change-Id: Ia802c94e3bb76930f7c88c990f078525be5459f5
Signed-off-by: Amar Tumballi 
BUG: 765264
Reviewed-on: http://review.gluster.com/388
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

core: add an extra flag to readv()/writev() API

2012-02-14T09:09:02+00:00

needed to implement a proper handling of open flag alterations
using fcntl() on fd.

Change-Id: Ic280d5db6f1dc0418d5c439abb8db1d3ac21ced0
Signed-off-by: Amar Tumballi 
BUG: 782265
Reviewed-on: http://review.gluster.com/2723
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

read-ahead: add performance.read-ahead--page-count option to 'volume set' framework

2012-02-03T17:23:37+00:00

Change-Id: I727be1ae2e3da1816afa52fc9555269aa07c39c1
BUG: 783379
Signed-off-by: Kaushik BV 
Reviewed-on: http://review.gluster.com/2700
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy 
Reviewed-by: Amar Tumballi 
Reviewed-by: Vijay Bellur

performanc/stat-prefetch: check if loc->gfid is present before checking loc->name

2012-02-03T03:38:09+00:00

After gfid based backend changes loc will either contain the gfid of the inode
or it will contain the parent gfid and the name of the entry. So before unwinding
when loc->name is not there we have to check if loc->gfid is present or not.
If loc->gfid is null and loc->name is also NULL, then unwind with the error.

Change-Id: If88b9462bde09a80e79f27899c995605697ce453
BUG: 785675
Signed-off-by: Raghavendra Bhat 
Reviewed-on: http://review.gluster.com/2710
Tested-by: Gluster Build System 
Reviewed-by: Amar Tumballi 
Reviewed-by: Jeff Darcy 
Reviewed-by: Vijay Bellur