From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 04 Oct 2001 18:27:20 +0200 From: Kenneth Johansson Subject: Re: Improving ramdisk uncompression time... To: Subodh Nijsure Cc: "'linuxppc-embedded '" Message-id: <3BBC8DE8.3AE9B8FC@inn.ericsson.se> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 References: Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Subodh Nijsure wrote: > > Hello, > > My setup has rather large ramdisk 5MB as the ramdisk contains > firmware for other boards in the system. In total boot time of > about 60 seconds, close to 50% is spent in uncompressing the ramdisk. I have a 10MB ramdisk when compresses is a little over 2MB. On a 405 in 200MHz this takes 1 second to uncompress. Are you sure you have cache working. You could try to use cramfs. Then the the data don't have to be uncompressed. I think I have not used it myself. -- Kenneth Johansson Ericsson Business Innovation AB Tel: +46 8 404 71 83 Viderögatan 3 Fax: +46 8 404 72 72 164 80 Stockholm kenneth.johansson@inn.ericsson.se ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/