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From: Matthew Khouzam <matthew.khouzam-IzeFyvvaP7pWk0Htik3J/w@public.gmane.org>
To: "lttng-dev-bnB2LGs2QVJ+nrgayQ7rhA@public.gmane.org"
	<lttng-dev-bnB2LGs2QVJ+nrgayQ7rhA@public.gmane.org>,
	Linux Tools developer discussions
	<linuxtools-dev-j9T/66MeVpFAfugRpC6u6w@public.gmane.org>
Subject: Tmf Ctf Parser Scalability issues (3/3)
Date: Tue, 26 Nov 2013 11:44:51 -0500	[thread overview]
Message-ID: <5294D003.5040104@ericsson.com> (raw)

Hello all,
I was looking at the CTF parser in the TMF project of Linux Tools. I
have come up with three points where scalability will be an issue. I am
sending 3 emails, each one describing one of the issues so we can
aggregate them more cohesively. First a primer, CTF is a file format
that has traces written in packets, the packets are parts of files in
streams, the streams are files in a directory.

Issue 3: Event size
As hinted in the previous email, it can definitely be a possibility that
traces can have events that are too large to fit into memory. These
events could also make reading a packet difficult, since the packet
could have a said event in the middle, and therefore, we could end up
with a packet that cannot be read properly with the sliding window
memory map, unless corrective actions are taken.

Proposed solution:
Would anyone do this? I see it as a longer term problem and as a known
limitation, unless someone says "Hey, I want 8gb events!".

             reply	other threads:[~2013-11-26 16:44 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-26 16:44 Matthew Khouzam [this message]
2013-11-26 23:07 ` Tmf Ctf Parser Scalability issues (3/3) Mathieu Desnoyers

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