Messages in this thread | | | Date | Sat, 12 Jan 2002 23:19:41 -0800 | From | J Sloan <> | Subject | My end user testing of 2.4.8-ish kernels |
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I did some testing today on the mini-low-latency patch.
I must admit that I was totally biased towards it from the start.
While it certainly didn't hurt anything, the bottom line is that after hours of mp3/dbench tests, I was unable to quantify any real difference between 2.4.18-pre3 vanilla and with mini low latency. They exhibit pretty much the same behaviour in terms of how much dbench it takes to start hearing audio dropouts in xmms - they were both smooth up to dbench 40, but started exhibiting sporadic audio dropouts at dbench 64.
Out of curiosity I booted up 2.4.18pre2-aa2 and found it a real gem. To my pleasant suprise I was able to run dbench 128 without hearing a _single_ audio dropout. (the dbench 128 result was 19.75 MB/sec)
With dbench 192 I did start to hear some occasional dropouts, but they were generally short, e.g. 100ms or so.
In any event, all the 2.4.18-pre-ish kernels I tested today are much better at this than e.g. 2.4.7 - at least on my hardware, I am now getting excellent interactive performance under load without preempt or low-latency patches, and that's a good thing.
IMHO the -aa kernel seems to the clear winner here -
Good for server use, good for desktop use...
Regards
jjs
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