similar to: Xen benchmark

Hey everyone, I hope you guys can help me explaining a pretty strange result that came up when benchmarking a native Red Hat installation against a Xen DomU (installed in a file container). I used lmbench3 on a dualcore AMD-machine. To make the results comparable, I "unplugged" all CPU cores but one in the native installation (setting the "online"-entry to 0). The DomU had

Hey everyone, I hope you guys can help me explaining a pretty strange result that came up when benchmarking a native Red Hat installation against a Xen DomU (installed in a file container). I used lmbench3 on a dualcore AMD-machine. To make the results comparable, I "unplugged" all CPU cores but one in the native installation (setting the "online"-entry to 0). The DomU had

Hi all, Sorry for the delay. This implements binary patching of call sites for interrupt-related paravirt ops, since no-doubt Andi wasn't the only one to believe this approach is slow. The benchmarks were done on a UP 3GHz Pentium 4 with 512MB of RAM. 2.6.17-rc4 vs 2.6.17-rc4 with CONFIG_PARAVIRT=y vs 2.6.17-rc4 CONFIG_PARAVIRT=y with patch. Summary: with binary patching, the difference

Hi all, Sorry for the delay. This implements binary patching of call sites for interrupt-related paravirt ops, since no-doubt Andi wasn't the only one to believe this approach is slow. The benchmarks were done on a UP 3GHz Pentium 4 with 512MB of RAM. 2.6.17-rc4 vs 2.6.17-rc4 with CONFIG_PARAVIRT=y vs 2.6.17-rc4 CONFIG_PARAVIRT=y with patch. Summary: with binary patching, the difference

I have a large dataset (questionnaire results) of mostly categorical variables. I have tested for dependency between the variables using chi-square test. There are an incomprehensible number of dependencies. I used the chaid() function in the CHAID package to detect interactions and separate out (what I hope to be) the underlying structure of these dependencies for each variable. What typically

Hallo Everybody Consider the following vector a=1:10 b=20:30 c=40:50 x=c(a,b,c) I need a function that can tell me that there are three set of continuos sequences and that the first is from 1:10, the second from 20:30 and the third from 40:50. In other words: a,b, and c. regards Christiaan [[alternative HTML version deleted]]

Hi everybody I am a recent convert from SAS so please excuse me if this is all very obvious: I want to use the runs test {runs.test() in package tseries} to test the randomness of a certain variable in a survey for each interviewer. I tried to us the by() statement but it doesn't seem to work with runs.test() as the function. Here is what I have: Consider a data frame with two variables and

Hi everybody. I have a dataframe that contains a factor with the date information in the format like in the example below: "2009/05/12 11:22:31 AM" I have been able to convert it to POSIXt using strptime Now I want to print only the date as one vector and the time in another vector but they must be real date and time classes so that i can use them in calculations to reconstruct my

Hi everybody Im on R version 2.11.1 on Mac OS X I am working through David Kahle's example of using ggplot2 with Rgooglemaps (found here: https://github.com/hadley/ggplot2/wiki/Crime-in-Downtown-Houston,-Texas-:-Combining-ggplot2-and-Google-Maps). Excellent page by the way. I have downloaded the data and the code and want to learn how to do this by first simulating David's results and

Hi, I report a benchmark result of this week on IPF using ia64/xen-unstable and ia64/linux-2.6.18-xen. Building the xen-vnif PV-on-HVM driver failed. This issue has already fixed on staging trees by the following patches: http://xenbits.xensource.com/staging/xen-unstable.hg?rev/48c8244c47c7 http://xenbits.xensource.com/staging/linux-2.6.18-xen.hg?rev/670f8d5305d2 In LTP, test cases related

Hi, I report a benchmark result of this week on IPF using ia64/xen-unstable and ia64/linux-2.6.18-xen. All test cases passed. TEST ENVIRONMENT Machine : Tiger4 Kernel : 2.6.18.8-xen Changeset : 18872:3acca92b9597 (ia64/xen-unstable) 753:17adc5c344fe (ia64/linux-2.6.18-xen) 131:9210bd27a551 (efi-vfirmware) b4d410a

Hi, I report a benchmark result of this week on IPF using ia64/xen-unstable and ia64/linux-2.6.18-xen. All test cases passed. TEST ENVIRONMENT Machine : Tiger4 Kernel : 2.6.18.8-xen Changeset : 17133:daf39fc8038a (ia64/xen-unstable) 442:0c1e6a1b8e90 (ia64/linux-2.6.18-xen) 70:b6ea2d6130fb (efi-vfirmware) Dom0 OS : RHEL4

Hi, I report a benchmark result of this week on IPF using ia64/xen-unstable and ia64/linux-2.6.18-xen. All test cases passed. TEST ENVIRONMENT Machine : Tiger4 Kernel : 2.6.18.8-xen Changeset : 18503:325904748847 (ia64/xen-unstable) 673:3161879fdf22 (ia64/linux-2.6.18-xen) 126:d255b2cfdd5a (efi-vfirmware) 0f3d638

Hi, I report a benchmark result of this week on IPF using ia64/xen-unstable and ia64/linux-2.6.18-xen. All test cases passed. TEST ENVIRONMENT Machine : Tiger4 Kernel : 2.6.18.8-xen Changeset : 16540:8ba08f2244b2 (ia64/xen-unstable) 337:4108b5c64f86 (ia64/linux-2.6.18-xen) 35:ebf7052731ec (efi-vfirmware) Dom0 OS : RHEL4

Hallo Everybody How do you specify arguments for a function used within another function? Here is my problem: I am reconstructing a calculator for the burden of disease due to air pollution from publications and tools published by the WHO. The calculations make use of published dose-response relationships for particular health end-points. This is then applied to populations with known or

Hi everybody. I want to identify not only duplicate number but also the original number that has been duplicated. Example: x=c(1,2,3,4,4,5,6,7,8,9) y=duplicated(x) rbind(x,y) gives: [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10] x 1 2 3 4 4 5 6 7 8 9 y 0 0 0 0 1 0 0 0 0 0 i.e. the second 4 [,5] is a duplicate. What I want is

Hi Everybody I need to "transport" some data and results to use another application (Sweave via LyX - where debugging is very difficult) in order to build a report. Is it possible to store a collection of variables of different types (like named integers, matricies, data frames and two lists) all in one list and save it and then simply load it again later and "unpack" the

Hi everybody I am trying to install RPsSQL and get the following error message: When I do ./configure form the untarred source directory I get loading cache ./config.cache checking for crypt in -lcrypt... no No crypt function found When I use the Package installer in R I get install.packages("/Users/christiaanpauw/tmp/RPgSQL/", , NULL, type = "source") Warning in

Hi Everybody Is there a way in which one can use the RPostgreSQL package to take a sample from a table in Postgres database without having to read the whole table into R regards Christiaan [[alternative HTML version deleted]]

Hi Everybody I use R2.8.0 on Mac OS X. I set up LyX 1.6.1 to use Sweave today. I can compile the test file I found on CRAN ( http://cran.r-project.org/contrib/extra/lyx/) without a problem and the output looks very nice. In the test file the following R code is used. <<myFirstChunkInLyX>>= xObs <- 100; xMean <- 10; xVar <- 9 x <- rnorm(n=xObs, mean=xMean, sd=sqrt(xVar))