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  • Filtering SNMP View

    - by Arie K
    We have several network interfaces in a machine. How to configure SNMP view to limit which interfaces could be shown to public community? We're using Ubuntu Server and default SNMPD from the repository. We have successfully limit the SNMPD agent to show only interfaces tree using this configuration: view system included .iso.org.dod.internet.mgmt.mib-2.interfaces

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  • Slow NFS transfer performance of small files

    - by Arie K
    I'm using Openfiler 2.3 on an HP ML370 G5, Smart Array P400, SAS disks combined using RAID 1+0. I set up an NFS share from ext3 partition using Openfiler's web based configuration, and I succeeded to mount the share from another host. Both host are connected using dedicated gigabit link. Simple benchmark using dd: $ dd if=/dev/zero of=outfile bs=1000 count=2000000 2000000+0 records in 2000000+0 records out 2000000000 bytes (2.0 GB) copied, 34.4737 s, 58.0 MB/s I see it can achieve moderate transfer speed (58.0 MB/s). But if I copy a directory containing many small files (.php and .jpg, around 1-4 kB per file) of total size ~300 MB, the cp process ends in about 10 minutes. Is NFS not suitable for small file transfer like above case? Or is there some parameters that must be adjusted?

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  • Disabling RAID feature on HP Smart Array P400

    - by Arie K
    I'm planning to use ZFS on my system (HP ML370 G5, Smart Array P400, 8 SAS disk). I want ZFS to manage all disks individually, so it can utilize better scheduling (i.e. I want to use software RAID feature in ZFS). The problem is, I can't find a way to disable RAID feature on the RAID controller. Right now, the controller aggregates all of the disks into one big RAID-5 volume. So ZFS can't see individual disk. Is there any way to acomplish this setup?

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  • Growing UITextView and UITableViewCell

    - by Arie Pieter
    I'd like to emulate the compose mail screen of Apples iPhone app. At this moment I have a UITableView with some cells. The last cell contains a UITextView. I managed to get the scrolling the way I like, but one problem remains: how to let the UITextView and the UITableViewCell automatically grow in height when the user enters a new line of text? There has been written a lot about this, I know. But I couldn't find any solution. Can anybody help me or just give a hint? Thanks APC

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  • Chicago SQL Saturday

    - by Johnm
    This past Saturday, April 17, 2010, I journeyed North to the great city of Chicago for some SQL Server fun, learning and fellowship. The Chicago edition of this grassroots phenomenon was the 31st scheduled SQL Saturday since the program's birth in late 2007. The Chicago SQL Saturday consisted of four tracks with eight sessions each and was a very energetic and fast paced day for the 300+/- SQL Server enthusiasts in attendance. The speaker line up included national notables such as Kevin Kline, Brent Ozar, and Brad McGehee. My hometown of Indianapolis was well represented in the speaker line up with Arie Jones, Aaron King and Derek Comingore. The day began with a very humorous keynote by Kevin Kline and Brent Ozar who emphasized the importance of community events such as SQL Saturday and the monthly user group meetings. They also brilliantly included the impact that getting involved in the SQL community through social media can have on your professional career. My approach to the day was to try to experience as much of the event as I could, so there were very few sessions that I attended for their full duration. I leaped from session to session like a bumble bee, gleaning bits of nectar from each session. Amid these leaps I took the opportunity to briefly chat with some of the in-the-queue speakers as well as other attendees that wondered the hallways. I especially enjoyed a great discussion with Devin Knight about his plans regarding the upcoming Jacksonville SQL Saturday as well as an interesting SQL interpretation of the Iron Chef, which I think would catch on like wild-fire. There were two sessions that stood out as exceptional. So much so that I could not pull myself away: Kevin Kline presented on "SQL Server Internals and Architecture". This session could have been classified as one that is intended for the beginner. Kevin even personally warned me of such as I entered the room. I am a believer in revisiting the basics regardless of the level of your mastery, so I entered into this session in that spirit. It was a very clear and precise presentation. Masterfully illustrated and demonstrated. Brad McGehee presented on "How and When to Use Indexed Views". This was a topic that I was recently exploring and was considering to for use in an integration project. Brad effectively communicated the complexity of this feature and what is involved to gain their full benefit. It was clear at the conclusion of this session that it was not the right feature for my specific needs. Overall, the event was a great success. The use of volunteers, from an attendee's perspective was masterful. The only recommendation that I would have for the next Chicago SQL Saturday would be to include more time in between sessions to permit some level of networking among the attendees, one-on-one questions for speakers and visits to the sponsor booths. Congratulations to Wendy Pastrick, Ted Krueger, and Aaron Lowe for their efforts and a very successful SQL Saturday!

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