[Bugs] [Bug 1200457] gluster performance issue as data is added to volume. tar extraction of files goes from 1-minute on empty volume to 20-minutes on volume with 40TB.

bugzilla at redhat.com bugzilla at redhat.com
Tue Mar 31 16:44:18 UTC 2015


https://bugzilla.redhat.com/show_bug.cgi?id=1200457



--- Comment #11 from Shyamsundar <srangana at redhat.com> ---
Data from David's setup on the 5 fast linkat directories and 5 slowest linkat
directories, in terms of entry counts:

Fast:
/data/brick01bkp/homegfs_bkp/.glusterfs/82/93/
/data/brick01bkp/homegfs_bkp/.glusterfs/f1/34/
/data/brick01bkp/homegfs_bkp/.glusterfs/df/b0/
/data/brick01bkp/homegfs_bkp/.glusterfs/67/f7/
/data/brick01bkp/homegfs_bkp/.glusterfs/96/e0/

Slow:
/data/brick01bkp/homegfs_bkp/.glusterfs/e0/24/
/data/brick01bkp/homegfs_bkp/.glusterfs/80/e1/
/data/brick01bkp/homegfs_bkp/.glusterfs/e3/f4/
/data/brick01bkp/homegfs_bkp/.glusterfs/da/80/
/data/brick01bkp/homegfs_bkp/.glusterfs/a9/ca/

Fast:
[root at gfs01bkp ~]# ls -l /data/brick01bkp/homegfs_bkp/.glusterfs/82/93/ |
wc -l
81
[root at gfs01bkp ~]# ls -l /data/brick01bkp/homegfs_bkp/.glusterfs/f1/34/ |
wc -l
72
[root at gfs01bkp ~]# ls -l /data/brick01bkp/homegfs_bkp/.glusterfs/df/b0/ |
wc -l
77
[root at gfs01bkp ~]# ls -l /data/brick01bkp/homegfs_bkp/.glusterfs/67/f7/ |
wc -l
58
[root at gfs01bkp ~]# ls -l /data/brick01bkp/homegfs_bkp/.glusterfs/96/e0/ |
wc -l
57

Slow:
[root at gfs01bkp ~]# ls -l /data/brick01bkp/homegfs_bkp/.glusterfs/e0/24/ |
wc -l
69
[root at gfs01bkp ~]# ls -l /data/brick01bkp/homegfs_bkp/.glusterfs/80/e1/ |
wc -l
56
[root at gfs01bkp ~]# ls -l /data/brick01bkp/homegfs_bkp/.glusterfs/e3/f4/ |
wc -l
61
[root at gfs01bkp ~]# ls -l /data/brick01bkp/homegfs_bkp/.glusterfs/da/80/ |
wc -l
64
[root at gfs01bkp ~]# ls -l /data/brick01bkp/homegfs_bkp/.glusterfs/a9/ca/ |
wc -l
79

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