glusterfs.git/xlators/performance, branch v3.0.5rc3

Revert "performance/write-behind: explicitly enforce ordering of overlapping writes."

2010-05-28T10:41:13+00:00

This reverts commit 6d9b11dba63d86c48450aa956281114962289ef5.

performance/write-behind: explicitly enforce ordering of overlapping writes.

2010-05-26T11:49:00+00:00

- If there are non-contiguous offsets (offsets which do not start where
    previous write ended), wait for completion of previous writes to server,
    before sending new ones.
  - Send flush call to server only when all writes are completed.
  - If a file is opened with O_APPEND, at any point of time a maximum only one
    write call to server should be in transit. This is to avoid reordering of
    writes in the presence of afr which can result in data corruption.
    See bug #934 for more details.

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

BUG: 934 (md5sum mismatch when files are transferred using vsftpd)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=934

performance/quick-read: implement an upper size limit for the cache.

2010-05-26T07:13:48+00:00

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

BUG: 723 (enhancements to quick read)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=723

stat-prefetch: Remove checks for loc->parent

2010-05-26T06:31:41+00:00

..because loc->parent can be NULL for the root inode.
Having this check makes sp return EINVAL on perfectly valid
fops.

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

BUG: 854 (nfs server didn't start)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=854

write-behind: update default values for better small file performance

2010-05-13T19:12:35+00:00

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

BUG: 898 (small file performance enhancements)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=898

performance/read-ahead: don't set ra_file in fd->ctx unless all memebers of ra_file is initialized

2010-05-04T10:32:14+00:00

- If ptr to ra_file is set in fd->ctx even before initializing all its
    members, A race condition may occur b/w a thread executing ra_fstat,
    ra_readv etc (where all files open on the same inode are flushed) and
    the thread doing initialization of ra_file (in ra_open_cbk or
    ra_create_cbk). Because of this race-condition, flush_region might be
    called on an uninitialized ra_file, thereby causing crash.

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

BUG: 868 (crash in ra_fstat)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=868

performance/io-cache: Dump private information

2010-04-30T06:10:24+00:00

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

BUG: 828 (glusterdump filled up the /)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=828

performance/quick-read: don't try to validate again if qr_readv is called just after validation.

2010-04-27T09:38:23+00:00

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

BUG: 852 (QR cache-timeout 0 causes high CPU usage and app hangs)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=852

performance/quick-read: make use of nanosecond resolution of mtime to decide whether to keep cache or not.

2010-04-08T10:09:08+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

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