linux-kernel - Re: [PATCH] pipe_read: don't wake up the writer if the pipe is still full

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Message-ID: <20250226113845.GB8995@redhat.com>
Date: Wed, 26 Feb 2025 12:38:45 +0100
From: Oleg Nesterov <oleg@...hat.com>
To: "Sapkal, Swapnil" <swapnil.sapkal@....com>
Cc: Manfred Spraul <manfred@...orfullife.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Christian Brauner <brauner@...nel.org>,
	David Howells <dhowells@...hat.com>,
	WangYuli <wangyuli@...ontech.com>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	K Prateek Nayak <kprateek.nayak@....com>,
	"Shenoy, Gautham Ranjal" <gautham.shenoy@....com>,
	Neeraj.Upadhyay@....com
Subject: Re: [PATCH] pipe_read: don't wake up the writer if the pipe is still
 full

Thanks Sapkal!

I'll try to think. Meanwhile,

On 02/26, Sapkal, Swapnil wrote:
>
> Exact command with parameters is
>
> 	/usr/bin/hackbench -g 16 -f 20 --threads --pipe -l 100000 -s 100

Can you reproduce with "--process" rather than "--threads" ?

Oleg.