similar to: Fast logistic regression

This is netback multithread support patchset version 4. Main Changes from v3: 1. Patchset is against xen/next tree. 2. Merge group and idx into netif->mapping. 3. Use vmalloc to allocate netbk structures. Main Changes from v2: 1. Merge "group" and "idx" into "netif->mapping", therefore page_ext is not used now. 2. Put netbk_add_netif() and netbk_remove_netif()

Hi, we are running samba 4.4 on two machines as file servers. Both are running a GFS (stornext). The storage is attached using 8G HBA. You can get up to 800MB/s local speed. We are exporting the shares using 2x1GB and 2x10G. However the clients are only getting 40-50MB/s. With samba3 I think we had up to 80-90MB/s. Using a 100MB/s link for the client we see 12-13MB/s (wire speed). Using

List Out of interest, I use transparent squid proxies for caching websites, and I shape the clients that browse the net, this all works perfectly so no questions in this regard... CLIENT <--- eth0 ----> SQUID <----- ppp0 -----> NET What I just realised was that all egress traffic on eth0 gets shaped, squid gets data from ppp0 and hence is not shaped. Does this mean that squid

Hi I am using R as a back-end to some CGI scripts, written in Perl. My platform is Suse Linux 8.2, Apache 1.3.7. So the CGI script takes some form parameters, opens a pipe to an R process, loads up some Bioconductor libraries, executes some R commands and takes the ouput and creates a web page. It is all very neat and works well. I am trying to make my cgi scripts quicker and it turns out

In order to get more information on IO performance problems I created the script below: #!/usr/sbin/dtrace -s #pragma D option flowindent syscall::*write*:entry /pid == $1 && guard++ == 0/ { self -> ts = timestamp; self->traceme = 1; printf("fd: %d", arg0); } fbt::: /self->traceme/ { /* elapsd =timestamp - self -> ts; printf("

Hello All, I have a 40k rows long data set that is taking a lot of time to be read-in. Is there a way to skip reading even/odd numbered rows or read-in only rows that are multiples of, say, 10? This way I get the general trend of the data w/o actually reading the entire thing. The option 'skip' in read.table simply skips the first n rows and reads the rest. I do understand that once the

Hi, All: I am new to R and tm package. I'm trying to do the stemming using tm_map() and it doesn't seem to work: *I used:* > stemDocument(t_cmts[[100]]) *Where t_cmts is the corpus object, the results is:* bottle loose box abt airpak sections top plastic bottle squashed nearly flush neck previous shipments bottle wrapped securely bubble wrap wno bottle damage packaging poor

Thanks for the feedback. I do agree with having multiple smaller servers. When I was first approached with this task I mentioned as much. However, the current desire is to work with already existing hardware. That is out of my hands at the moment unless it just can't be done. I will explore Freeswitch a bit soon to compare it as well. I am struggling to find what the bottle neck is in

Hi, I am doing some simulations and found a bottle neck in my R script. I made an example: > a = matrix(rnorm(5000000),1000000,5) > tt = Sys.time(); sum(a[,1]*a[,2]*a[,3]*a[,4]*a[,5]); Sys.time() - tt [1] -1291.026 Time difference of 0.2354031 secs > > tt = Sys.time(); sum(apply(a,1,prod)); Sys.time() - tt [1] -1291.026 Time difference of 20.23150 secs Is there a faster way of

Michael Smith schrieb: >On 5/10/05, Anatol <icecast@recordcaster.de> wrote: > > >>[...] >> >> >This usually means the client can't receive fast enough - possible >because their connection is too slow. It's normal to get it >occastionally with some songs. > >If it's dropping clients that are fast enough, maybe there's something

Hi all, Lots of big IT companies are renting out their computing facilities. Amazon has one such service. In my understanding, this will dramatically improve the speed of my R program -- currently the cross validation and model selection part is the bottle neck. It take a few days to just finish optimal parameter tuning via CV. Could anybody shed some lights on this? Is it completely transparent

Hello, I have strange behaviour on a server that I can't get a handle on. I have a reasonably powerful server running VMware server 1.0.4-56528. It has a RAID5 build with mdadm on 5 SATA drives. Masses of ram and 2 XEON CPUs. But it stutters. Example : fire up vi, press and keep finger on i. After filling 2-3 lines, the display is stopped for 2-12 seconds. Then they continue. This

Dear list members; The code given below corresponds to the PCA-NIPALS (principal component analysis) algorithm adapted from the nipals function in the package chemometrics. The reason for using NIPALS instead of SVD is the ability of this algorithm to handle missing values, but that's a different story. I've been trying to find a way to improve (if possible) the efficiency of the code,

Dear Thomas, > Hi Christoph, > > maybe there is a way of caching the print outputs and output them at the > end of the program execution? > So, your real application do not have this kind of bottle neck. this is a valid idea, thought the problem is: I output all things only "once" and I even output it like: 1) load module 2) go over functions 3) output all blocks with

Hi, I'm looking for some recommendations for a "fast" fileserver regarding the hardware you use. We have different fileservers as our requirements changed over time. The "main" problem we are faced with is, that with smb (windows 7 and OS X) clients we never get really close to GBit speed on reads or writes. Using the same servers/storages with ftp, ssh, rsync, nfs we

If you look into the download areas, you'll find Asterisk 1.0 release candidate two... Find the mirrors on the link below, they'll update during the day if they don't already have RC2. Please don't hit the Digium FTP-server, since development need that connection for the bug tracker and the CVS. (And I guess Digium also needs the link for telephony :-) Mirror listing *

Hi, I am looking into good way to port Windows applications to Linux and hopefully any other Unixes. I'd like to know about questions below. If anyone answer them, I'd appreciate it. 1. Can I use Winelib to port commercial application whose sources will be not disclosed ? 2. Is it possible to link Winelib statically with an application and distribute it ? 3. In case that I

In our environemt, we use PCs (NT) running a JVM that produces unique file names, and data content about 100K or less. We only write to these file. The JVM (the application) does spawn many threads so the net effect can be many simultaneous file creation requests from one PC. All the files are written to a samba mounted directory, and the directory *file* itself does get somewhat large. The

Hi! Today I converted my /home from Ext4 to BTRFS by reformatting and copying all over again. I created the filesystem with -l 16384 -n 16384 -d single -m single on an logical volume Intel SSD 320 and mount with compress=lzo,spacecache. Current state: merkaba:~> btrfs filesystem show failed to read /dev/sr0 Label: ''home'' uuid: […] Total devices 1 FS bytes used

Hi, I want to use llvm::Value::print to output the assembly strings for llvm::Instructions inside a rather large llvm::Module (linked module with lots of types/...). I started with plain ::print and switched over to http://llvm.org/docs/doxygen/html/classllvm_1_1Value.html#a04e6fc765eeb0c4c90ac5d55113db116 with a ModuleSlotTracker I pass in myself to avoid some complexity. Still now I have