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HI, The question is a ZFS performance question in reguards to SAN traffic. We are trying to benchmark ZFS vx VxFS file systems and I get the following performance results. Test Setup: Solaris 10: 11/06 Dual port Qlogic HBA with SFCSM (for ZFS) and DMP (of VxFS) Sun Fire v490 server LSI Raid 3994 on backend ZFS Record Size: 128KB (default) VxFS Block Size: 8KB(default) The only thing

...hardware array and its vendor recommends the following setting in /etc/system: set sd:sd_max_throttle = <value> or set ssd:ssd_max_throttle = <value> Is it possible to monitor *somehow* whether the variable becomes sort of bottleneck ? Or how its value influences io traffic ? Regards przemol

...ntOS. I am not against 64-bits (we use it for many, many years using Solaris) but what concerns me is the stability of 64-bit Linux. Can you share your experience regarding stability of 32-bit and 64-bit CentOS ? Does anybody use 64-bit CentOS in production (web applications) environment ? Regards przemol ---------------------------------------------------------------------- Dobra czy zla wiadomosc? Zawsze warto oszczedzac. Teraz 5,5%. Sprawd? > http://link.interia.pl/f221b

Hello, I'd like to clone existing CentOS server. Can anybody recommend any working solution to achieve that ? Regards Przemyslaw Bak (przemol) -- http://przemol.blogspot.com/ ---------------------------------------------------------------------- Wygraj nawigacje GPS! 14 sztuk czeka. Sprawdz >> http://link.interia.pl/f22f3

hello! First of all thank you for all your information you give us on this sites. It is a great help to learn for example dtrace. i''ve a little script in work, which shows the cpu utilization per process in percent. this output is refreshed every 2 seconds for example. now i want to extend this script with the output of the allocated bytes of memory per process. how could i display this

...cripts to check if these software works after update. Sometimes we forget ... It it possible to configure any sort of triggers which will run automatically after 'yum update' ? I'd like to avoid writing shell wrappers for yum and looking for yum-way solution ;-) Regards Przemyslaw Bak (przemol) ---------------------------------------------------------------------- Wyprzedaz do -70%!!! Wejdz na Endo.pl http://linkint.pl/f2791

...no crucial (for them) php packages: php-smarty php-adodb php-accelerator It is not acceptable for us to download sources and compile them and repeat the process each time there is a security bug. Can you recommend any repository which will deliver all the above packages (and many others) ? Regards przemol ---------------------------------------------------------------------- Nowa akcja Pepsi - nagrody za kody spod nakretek. Zarejestruj sie! http://link.interia.pl/f21cc

Hi all, I remember at OSCON 2005 there was talk of adding DTrace probes to PHP (in fact, I have a photo of Bryan and Wes working on it!). Did they ever get into the upstream branch, ''cause I don''t recall seeing a --enable-dtrace (or similar) configuration option when I recently built PHP 5.2.1. If not, is there an ETA? TIA, -- Rich Teer, SCSA, SCNA, SCSECA, OpenSolaris CAB

We are looking at the alternatives to VXVM/VXFS. One of the feature which we liked in Veritas, apart from the obvious ones is the ability to call the disks by name and group them in to a disk group. Especially in SAN based environment where the disks may be shared by multiple machines, it is very easy to manage them by disk group names rather than cxtxdx numbers. Does zfs offer such

Hey folks, We've got some new hardware and are trying to figure out what best to do with it. Either run CentOS right on the bare metal, or virtualize, or several combination options. Mainly looking at : - CentOS on bare metal - CentOS on ESXi 4.0 with local disk - CentOS on ESXi with 1 VM running Openfiler to serve disk to other VMs And want to benchmark these 3 scenarios So far all we

Hi All, We are currently in the process of testing Solaris 10 with ZFS and Oracle and are running it on a T2000. When checking performance statistics on the T2000, we notice that only one thread of the CPU appears to be doing any of the processing. Leaving all other threads seemingly idle. Are there any tuning parameters that need to be set or changed when running Oracle on T2000 using

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("

Hi! >Message: 5 >Date: Thu, 08 Jul 2004 17:00:21 +0530 >From: Sudheer Divakaran <sudheer@svw.com> >To: lartc@mailman.ds9a.nl >Subject: [LARTC] Is Linux based Router feasible > >Hi, > >I''ve a local LAN consisting of about 150 machines. I''m using a Linux >machine as the gateway machine which inturn connects to two different >ISPs. My

Hi, I got such message: hostname inetd[111]: netbios-ns/udp server failing (looping), service terminated What does it mean ? How can I correct it ? By there przemol

...f something is wrong we rollback the snapshot. On physical servers we cannot do that. I have read about rollback option of rpm but not sure if this is reliable solution. What is your best practise regarding "rollbacking" 'yum update' on physical servers ? Regards Przemyslaw Bak (przemol)

...building. We don''t want to create another lan(s) but keep moved boxes in the same lan as they were before the movement. Computers which are going to be moved are from _all_ lans. How to "expand" all these lan''s across two buildings ? Can you suggest me some solution ? przemol _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

...tter: 1. new CentOS under vmware (having several CentOS servers under Vmware) or 2. new CentOS under KVM under existing CentOS (having a few CentOS servers with several KVMs in each) Each approach has some advantages and disadvantages. Can you share your thoughts about it ? Regards Przemyslaw Bak (przemol) ----------------------------------------- Wez udzial w konkursie i WYGRAJ! Sprawdz >> http://linkint.pl/f299e

I've been asked to think about setting up an installation for a recently- widowed man. His needs are small - mail, Internet, on-line banking, basically - but his wife dealt with all of it on her laptop and he feels very insecure. It seems to me that CentOS would be perfect for him except for the need to keep it securely patched. I'm wondering if it's possible to auto-install

Hi ! I have a server (Centos 5) that is using a pair of SAS drives to store the data. (Mail server) They are on an adaptec raid controler with a battery backup and write back cache active. >From time to time, I have sever peak io to those data disks (> 400 to 500 iops, > 70 to 100 megs/sec). With iostat, I find that it's almost a write i/o problem. How can I find to which files

All, I understand that ZFS gives you more error correction when using two LUNS from a SAN. But, does it provide you with less features than UFS does on one LUN from a SAN (i.e is it less stable). Thanks, Shawn This message posted from opensolaris.org