Messages in this thread | | | Date | Sat, 26 May 2007 16:47:30 +0530 | From | "Nitin Gupta" <> | Subject | Re: [RFC] LZO de/compression support - take 3 |
| |
Hi Pavel,
Just did some benchmarking; results below.
On 5/25/07, Pavel Machek <pavel@ucw.cz> wrote: > > What is the performance difference between safe and unsafe version? >
File size: 256K - Following as tests for original test code - not any kernel port of this. - Test with each block size repeated 5 times - taken avg. of these 5 runs. - Same file used for each test. - Used lzotest utility (included with LZO 2.02) for testing.
Blocksize Comp* DU* DS* Speed% 4 59.356 211.526 195.260 7.689 8 54.623 202.712 188.369 7.075 16 50.342 196.482 183.988 6.358 32 47.499 189.800 177.455 6.504 64 44.148 178.724 167.201 6.447 128 42.125 170.229 159.257 6.445 256 41.830 155.035 146.115 5.753
* All speeds in MB/sec Comp = LZO1X-1 DU = Decompress (unsafe) DS = Decompress (safe) Speed% = ((DU-DS)/DU)*100
I have yet to see how the kernel ports compare against this original version.
Cheers, Nitin - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |