diff options
| author | Pranith Kumar K <pkarampu@redhat.com> | 2017-07-26 20:27:08 +0530 |
|---|---|---|
| committer | Krutika Dhananjay <kdhananj@redhat.com> | 2017-07-27 10:39:52 +0000 |
| commit | abfbc3eb821e144ddbfdc5d7da401557b52beaf1 (patch) | |
| tree | c16d9db3cc6c6263e229c2fd79fd8a674cae2f11 /extras/group-gluster-block | |
| parent | 16e8d03c7e4afa4c0e186f8ea50389fc3735e879 (diff) | |
group-gluster-block: Set default shard-block-size to 64MB
With 4MB shard size I/O slows down more because of the extra
inodelk/xattrops in replicate. So increasing it to 64MB which
gave better performance than 4MB.
To simulate writes on a preallocated VM-image, fallocate the file and then do
dd with notrunc
do "fallocate -l 1GB" then "dd if=/dev/zero of=file-1GB bs=1MB count=1024 conv=notrunc"
These are the results on my laptop for dd:
With 4MB:
1.84 1357.37 us 19.00 us 12431.00 us 1188 FINODELK
2.45 255.08 us 58.00 us 4038.00 us 8428 WRITE
95.69 78967.76 us 30.00 us 20324240.00 us 1063 FXATTROP
With 64MB:
0.13 59.36 us 15.00 us 814.00 us 657 FINODELK
6.02 225.53 us 69.00 us 6556.00 us 8205 WRITE
93.82 103015.12 us 32.00 us 13046368.00 us 280 FXATTROP
BUG: 1475605
Change-Id: I4ed5441409df639e38c731ba0d140fe92902f25f
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: https://review.gluster.org/17887
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com>
Diffstat (limited to 'extras/group-gluster-block')
| -rw-r--r-- | extras/group-gluster-block | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/extras/group-gluster-block b/extras/group-gluster-block index cea15d8ff66..12d5f90448c 100644 --- a/extras/group-gluster-block +++ b/extras/group-gluster-block @@ -12,5 +12,6 @@ cluster.locking-scheme=granular cluster.shd-max-threads=8 cluster.shd-wait-qlength=10000 features.shard=on +features.shard-block-size=64MB user.cifs=off server.allow-insecure=on |