lkml.org 
[lkml]   [2007]   [May]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [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/

\
 
 \ /
  Last update: 2007-05-26 13:19    [W:1.332 / U:0.780 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site