On Wed, Feb 27, 2013 at 04:36:47PM +0900, Kyungsik Lee wrote: > Compiler: Linaro ARM gcc 4.6.2 > 2. ARMv7, 1.7GHz based board > Kernel: linux 3.7 > Uncompressed Kernel Size: 14MB > Compressed Size Decompression Speed > LZO 6.0MB 34.1MB/s Old > ---------------------------------------- > 6.0MB 34.7MB/s New > 6.0MB 52.2MB/s(UA) > ============================================= > LZ4 6.5MB 86.7MB/s > UA: Unaligned memory Access support
That is pretty conclusive - it shows an 8% increase in image size vs a 66% increase in decompression speed. It will take a _lot_ to offset that increase in decompression speed. So, what I think is that yes, we should accept LZ4 and drop LZO from the kernel - the "fast but may not be small" compression title has clearly been taken by LZ4. Akpm - what's your thoughts? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
