Pranith Kumar Karampuri

[Tracking][pranithk] - Performance issues - 2022

2

- [ ] https://github.com/gluster/glusterfs/issues/1591 - [ ] https://github.com/gluster/glusterfs/issues/2463 - [ ] https://github.com/gluster/glusterfs/issues/3107 - [ ] https://github.com/gluster/glusterfs/issues/3108

graph switch in glusterfs does fsync which leads to I/O freeze on the mount for extended periods

3

 On graph switch for each fd an fsync is called serially leading to high latency on the mounts during this process. This was done to make...

glusterd: Enable cluster.use-anonymous-inode for op-version >= 9

6

Problem: On upgrade even though the op-version of gluster is less than 9 cluster.use-anonymous-inode option is enabled leading to unnecessary processing by self-heal-daemon Fix: Enable this option based on op-version...

glusterfs client may crash/hang when the same file is written using different fds simultaneously when a race is hit

6

Gluster client crashed with Thread-1 ``` #0 0x00007fa9a54ec84c in __pthread_kill_implementation () from /lib64/libc.so.6 #1 0x00007fa9a549f6a6 in raise () from /lib64/libc.so.6 #2 0x00007fa9a54897d3 in abort () from /lib64/libc.so.6 #3 0x00007fa9a54896fb in...

dht: hash-mod vs hash-jump-consistent results

20

Just want to share results of some experiments I did: I added the attached patch and this is what I observed for the amount of data that is migrated with...