From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20080305115714.239239647@de.ibm.com> References: <20080305115432.691030908@de.ibm.com> Date: Wed, 05 Mar 2008 12:54:38 +0100 From: Martin Schwidefsky Subject: [patch 06/10] sclp_vt220: speed up console output for interactive work Content-Disposition: inline; filename=006-vt220-speedup.diff Sender: linux-kernel-owner@vger.kernel.org List-Archive: List-Post: To: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Cc: Christian Borntraeger , Martin Schwidefsky List-ID: From: Christian Borntraeger Currently an output buffer can wait up to HZ/2 until the buffer is flushed. The wait time is noticeable in interactive tools like mc. Change the value to HZ/20, which seems enough for interactive work. Signed-off-by: Christian Borntraeger Signed-off-by: Martin Schwidefsky --- drivers/s390/char/sclp_vt220.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: quilt-2.6/drivers/s390/char/sclp_vt220.c =================================================================== --- quilt-2.6.orig/drivers/s390/char/sclp_vt220.c +++ quilt-2.6/drivers/s390/char/sclp_vt220.c @@ -367,7 +367,7 @@ sclp_vt220_timeout(unsigned long data) sclp_vt220_emit_current(); } -#define BUFFER_MAX_DELAY HZ/2 +#define BUFFER_MAX_DELAY HZ/20 /* * Internal implementation of the write function. Write COUNT bytes of data -- blue skies, Martin. "Reality continues to ruin my life." - Calvin.