From: Ajay Kaher <akaher@vmware.com>
To: Steven Rostedt <rostedt@goodmis.org>,
"mhiramat@kernel.org" <mhiramat@kernel.org>,
"shuah@kernel.org" <shuah@kernel.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-trace-kernel@vger.kernel.org"
<linux-trace-kernel@vger.kernel.org>,
"linux-kselftest@vger.kernel.org"
<linux-kselftest@vger.kernel.org>,
"chinglinyu@google.com" <chinglinyu@google.com>,
Nadav Amit <namit@vmware.com>,
"srivatsa@csail.mit.edu" <srivatsa@csail.mit.edu>,
Alexey Makhalov <amakhalov@vmware.com>,
Vasavi Sirnapalli <vsirnapalli@vmware.com>,
Tapas Kundu <tkundu@vmware.com>,
"er.ajay.kaher@gmail.com" <er.ajay.kaher@gmail.com>
Subject: Re: [PATCH v3 00/10] tracing: introducing eventfs
Date: Thu, 1 Jun 2023 09:07:22 +0000 [thread overview]
Message-ID: <2FE3777F-4BE0-4F77-B563-3A16BE05B988@vmware.com> (raw)
In-Reply-To: <1685610013-33478-1-git-send-email-akaher@vmware.com>
> On 01-Jun-2023, at 2:30 PM, Ajay Kaher <akaher@vmware.com> wrote:
>
> Events Tracing infrastructure contains lot of files, directories
> (internally in terms of inodes, dentries). And ends up by consuming
> memory in MBs. We can have multiple events of Events Tracing, which
> further requires more memory.
>
> Instead of creating inodes/dentries, eventfs could keep meta-data and
> skip the creation of inodes/dentries. As and when require, eventfs will
> create the inodes/dentries only for required files/directories.
> Also eventfs would delete the inodes/dentries once no more requires
> but preserve the meta data.
>
> Tracing events took ~9MB, with this approach it took ~4.5MB
> for ~10K files/dir.
>
Steve, I have used nested rw-semaphore for eventfs locking (same as in cifs).
As per Amit Nadav, this has to be revisited/reviewed. Please have a look and
share your thoughts.
-Ajay
next prev parent reply other threads:[~2023-06-01 9:08 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-01 9:00 Ajay Kaher
2023-06-01 9:00 ` [PATCH v3 01/10] tracing: Require all trace events to have a TRACE_SYSTEM Ajay Kaher
2023-06-01 9:00 ` [PATCH v3 02/10] eventfs: introducing struct tracefs_inode Ajay Kaher
2023-07-01 13:25 ` Steven Rostedt
2023-07-02 14:55 ` Masami Hiramatsu
2023-06-01 9:00 ` [PATCH v3 03/10] eventfs: adding eventfs dir add functions Ajay Kaher
2023-07-01 13:54 ` Steven Rostedt
2023-07-03 10:13 ` Ajay Kaher
2023-07-03 15:08 ` Steven Rostedt
2023-07-03 18:51 ` Ajay Kaher
2023-07-03 19:52 ` Steven Rostedt
[not found] ` <20230709215447.536defa6@rorschach.local.home>
2023-07-10 2:17 ` Nadav Amit
2023-07-10 2:53 ` Steven Rostedt
2023-07-10 18:53 ` Ajay Kaher
2023-07-10 19:06 ` Steven Rostedt
[not found] ` <20230710150731.4ec2b9f8@gandalf.local.home>
2023-07-10 19:10 ` Steven Rostedt
2023-07-10 20:15 ` Steven Rostedt
2023-07-10 21:09 ` Steven Rostedt
2023-07-11 14:24 ` Steven Rostedt
2023-06-01 9:00 ` [PATCH v3 04/10] eventfs: adding eventfs file " Ajay Kaher
2023-06-01 9:00 ` [PATCH v3 05/10] eventfs: adding eventfs file, directory remove function Ajay Kaher
2023-06-01 9:00 ` [PATCH v3 06/10] eventfs: adding functions to create eventfs files and directories Ajay Kaher
2023-06-01 9:00 ` [PATCH v3 07/10] eventfs: adding eventfs lookup, read, open functions Ajay Kaher
2023-06-01 9:00 ` [PATCH v3 08/10] eventfs: creating tracefs_inode_cache Ajay Kaher
2023-06-01 9:00 ` [PATCH v3 09/10] eventfs: moving tracing/events to eventfs Ajay Kaher
2023-06-10 15:25 ` kernel test robot
2023-06-13 7:06 ` Ajay Kaher
2023-06-01 9:00 ` [PATCH v3 10/10] test: ftrace: fix kprobe test for eventfs Ajay Kaher
2023-06-13 8:21 ` Masami Hiramatsu
2023-06-01 9:07 ` Ajay Kaher [this message]
2023-06-19 5:38 ` [PATCH v3 00/10] tracing: introducing eventfs Ajay Kaher
2023-06-20 15:02 ` Steven Rostedt
2023-06-21 11:42 ` Ajay Kaher
2023-06-22 3:31 ` Masami Hiramatsu
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