From: Kirill Tkhai <ktkhai@virtuozzo.com>
To: miklos@szeredi.hu, kuznet@virtuozzo.com,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/3] fuse: Solve request_find() bottleneck
Date: Mon, 24 Sep 2018 15:08:16 +0300 [thread overview]
Message-ID: <8222c235-ff07-b16b-3389-0b9780145abd@virtuozzo.com> (raw)
In-Reply-To: <153666041612.19117.14667042009014596105.stgit@localhost.localdomain>
2 weeks passed, so ping.
Miklos, any reaction on this?
Thanks,
Kirill
On 11.09.2018 13:11, Kirill Tkhai wrote:
> Hi,
>
> We noticed the performance bottle neck in FUSE running our
> Virtuozzo storage over rdma. On some types of workload
> we observe 20% of time spent in request_find() in profiler.
> This function is iterating over long list of requests, and it
> scales bad.
>
> The patch introduces hash table to reduce the number
> of iterations, we do in this function. Also, algorithm
> of generating IDs for interrupt requests is changed,
> simplified request_find() function and killed
> fuse_req::intr_unique field.
>
> Kirill
> ---
>
> Kirill Tkhai (3):
> fuse: Change interrupt requests allocation algorhythm
> fuse: Kill fuse_req::intr_unique
> fuse: Use hash table to link processing request
>
>
> fs/fuse/dev.c | 47 +++++++++++++++++++++++++++++++++++++----------
> fs/fuse/fuse_i.h | 11 +++++------
> fs/fuse/inode.c | 5 ++++-
> 3 files changed, 46 insertions(+), 17 deletions(-)
>
> --
> Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
>
next prev parent reply other threads:[~2018-09-24 12:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-11 10:11 [PATCH 0/3] fuse: Solve request_find() bottleneck Kirill Tkhai
2018-09-11 10:11 ` [PATCH 1/3] fuse: Change interrupt requests allocation algorhythm Kirill Tkhai
2018-09-11 10:12 ` [PATCH 2/3] fuse: Kill fuse_req::intr_unique Kirill Tkhai
2018-09-11 10:12 ` [PATCH 3/3] fuse: Use hash table to link processing request Kirill Tkhai
2018-09-25 9:08 ` Miklos Szeredi
2018-09-25 9:35 ` Kirill Tkhai
2018-09-24 12:08 ` Kirill Tkhai [this message]
2018-09-24 15:04 ` [PATCH 0/3] fuse: Solve request_find() bottleneck Miklos Szeredi
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