Archivo del Autor: carlosap

performance progress

incrementar checkpoints dbfinanzas bi log cluster size to 16 MB. proutil dbbasename -C truncate bi bi -bi 16384 set bi log block size to 8 kb. proutil dbbasename-C truncate bi -biblocksize 8 Set -bibufs to 25.  -spin 6000*#procesadores AIW 5 o más

How to tune BI I/O performance

The following is extracted from the v8 documentation. Before-image I/O Before-imaging is always enabled to let PROGRESS recover transactions if the system fails. This mechanism is extremely important for database reliability, but it creates a significant amount of I/O that can affect performance. In addition, before-image I/O is usually the first and most likely cause… Leer más »

FIO Perf Tool Nutshell

FIO is an I/O tool meant to be used both for benchmark and stress/hardware verification. It has support for 13 different types of I/O engines (sync, mmap, libaio, posixaio, SG v3, splice, null, network, syslet, guasi, solarisaio, and more), I/O priorities (for newer Linux kernels), rate I/O, forked or threaded jobs, and much more. It… Leer más »

Easter Eggs

$ aptitude moo There are no Easter Eggs in this program. $ aptitude -v moo There really are no Easter Eggs in this program. $ aptitude -vv moo Didn’t I already tell you that there are no Easter Eggs in this program? $ aptitude -vvv moo Stop it! $ aptitude -vvvv moo Okay, okay, if… Leer más »

Transmission 2.40 and above (RPC version: 14 and above)

https://code.google.com/p/transmission-control/ Introduction Transmission Web Control is a custom web UI, Support Transmission Version Transmission 2.40 and above (RPC version: 14 and above) Features Add torrent files or URLs Drag-and-drop to add torrent files Online modify the Transmission setting (Download folder,Speed ​​limit,Port,etc.) Pause / resume / recheck selected or all torrents View the current torrents status… Leer más »

magnetar o magnetoestrella

Un magnetar o magnetoestrella es una estrella de neutrones alimentada con un campo magnético extremadamente fuerte. Se trata de una variedad de púlsar cuya característica principal es la expulsión, en un breve período (equivalente a la duración de un relámpago), de enormes cantidades de alta energía en forma de rayos X y rayos gamma. Los… Leer más »

Metallic hydrogen i

Metallic hydrogen is a state of hydrogen in which it behaves as an electrical conductor. This state was predicted theoretically in 1935, but has not been reliably produced in laboratory experiments due to the requirement of high pressures, on the order of hundreds of gigapascals. At these pressures, hydrogen might exist as a liquid rather… Leer más »