[Gluster-devel] GlusterFS FUSE client leaks summary — part I
oleksandr at natalenko.name
Wed Feb 3 07:37:42 UTC 2016
Here goes the report on DHT-related leaks patch ("rsync" test).
RAM usage before drop_caches: 
Statedump before drop_caches: 
RAM usage after drop_caches: 
Statedump after drop_caches: 
Statedumps diff: 
Valgrind output: 
I guess, the patch works.
29.01.2016 23:11, Vijay Bellur написав:
> On 01/29/2016 01:09 PM, Oleksandr Natalenko wrote:
>> Here is intermediate summary of current memory leaks in FUSE client
>> I use GlusterFS v3.7.6 release with the following patches:
>> Kaleb S KEITHLEY (1):
>> fuse: use-after-free fix in fuse-bridge, revisited
>> Pranith Kumar K (1):
>> mount/fuse: Fix use-after-free crash
>> Soumya Koduri (3):
>> gfapi: Fix inode nlookup counts
>> inode: Retire the inodes from the lru list in
>> upcall: free the xdr* allocations
>> With those patches we got API leaks fixed (I hope, brief tests show
>> that) and
>> got rid of "kernel notifier loop terminated" message. Nevertheless,
>> client still leaks.
>> I have several test volumes with several million of small files
>> (100K…2M in
>> average). I do 2 types of FUSE client testing:
>> 1) find /mnt/volume -type d
>> 2) rsync -av -H /mnt/source_volume/* /mnt/target_volume/
>> And most up-to-date results are shown below:
>> === find /mnt/volume -type d ===
>> Memory consumption: ~4G
>> Statedump: https://gist.github.com/10cde83c63f1b4f1dd7a
>> Valgrind: https://gist.github.com/097afb01ebb2c5e9e78d
>> I guess, fuse-bridge/fuse-resolve. related.
>> === rsync -av -H /mnt/source_volume/* /mnt/target_volume/ ===
>> Memory consumption: ~3.3...4G
>> Statedump (target volume):
>> Valgrind (target volume): https://gist.github.com/f8e0151a6878cacc9b1a
>> I guess, DHT-related.
>> Give me more patches to test :).
> Thank you as ever for your detailed reports!
> This patch should help the dht leaks observed as part of
> dht_do_rename() in valgrind logs of target volume.
> Can you please verify if this indeed helps?
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