From c81bcf072ceefead5708ac57672d1dab5e42f4b8 Mon Sep 17 00:00:00 2001 From: Pranith Kumar K Date: Wed, 26 Jul 2017 20:27:08 +0530 Subject: 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 >Reviewed-on: https://review.gluster.org/17887 >CentOS-regression: Gluster Build System >Smoke: Gluster Build System >Reviewed-by: Krutika Dhananjay >(cherry picked from commit abfbc3eb821e144ddbfdc5d7da401557b52beaf1) BUG: 1476654 Change-Id: I4ed5441409df639e38c731ba0d140fe92902f25f Signed-off-by: Pranith Kumar K Reviewed-on: https://review.gluster.org/17919 CentOS-regression: Gluster Build System Smoke: Gluster Build System Reviewed-by: Krutika Dhananjay Reviewed-by: Niels de Vos Reviewed-by: Shyamsundar Ranganathan --- extras/group-gluster-block | 1 + 1 file changed, 1 insertion(+) (limited to 'extras') diff --git a/extras/group-gluster-block b/extras/group-gluster-block index a4a6367920b..835e06fc35a 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 -- cgit