On Thu 31-08-17 09:35:33, Wang Shilong wrote: > > On Mon, Aug 21, 2017 at 7:54 PM, Jan Kara <jack@xxxxxxx> wrote: > > Hello, > > this is a series of patches that address scalability issues in quota > subsystem. > For my testing I've used a synthetic benchmark where 50 different processes > are > creating files 10000 files each in separate directories (either for > different > or the same user). I've been testing on a machine with 48 CPUs with 64GB of > RAM over either SATA drive or ramdisk. Different patches have shown > improvements in different configs (see details in the changelog). Also > Wang Shilong gave some testing to my patches and in his setup he saw about > 100% improvement for file creation and about 50% improvement for file > unlink. > > > We rebechmark again this latest patchset, generally in our test case. > with file creation improved patch together with/without this quota patchset, > result is: > > -O quota +30% for creation, +10% for unlink > -O quota, porject +43% for creation, +67% for unlink > > Almost no degradation with/without quota for unlink now. Great, thanks for the data! BTW, how big difference do you observe with / without quota for creates? > Jan Kara, just for confirm will these patches be sent to Linus once 4.14 > merge window open? Yes, patches are queued in my tree for the coming merge window. Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR
