Cristian Bradiceanu

RHEL 6.1 / Scientific Linux 6.1 dmesg:

TECH PREVIEW: fscache may not be fully supported.
Please review provided documentation for limitations.
FS-Cache: Loaded
FS-Cache: Netfs 'nfs' registered for caching

Excerpt from RHEL 6.1 Technical Notes, Chapter 3. Technology Previews:

FS-Cache
FS-Cache is a new feature in Red Hat Enterprise Linux 6 that enables networked file systems (e.g. NFS) to have a persistent cache of data on the client machine.

… and nothing about the limitations or how to disable fscache.

Tried to add install fscache /bin/true to /etc/modprobe.d/fscache.conf with the following dmesg result (of course, no NFS filesystems mounted):

nfs: Unknown symbol __fscache_read_or_alloc_pages
nfs: Unknown symbol __fscache_relinquish_cookie
nfs: Unknown symbol __fscache_unregister_netfs
nfs: Unknown symbol __fscache_maybe_release_page
nfs: Unknown symbol __fscache_read_or_alloc_page
nfs: Unknown symbol __fscache_uncache_page
nfs: Unknown symbol __fscache_register_netfs
nfs: Unknown symbol __fscache_write_page
nfs: Unknown symbol __fscache_wait_on_page_write
nfs: Unknown symbol __fscache_acquire_cookie
nfs: Unknown symbol __fscache_read_or_alloc_pages
nfs: Unknown symbol __fscache_relinquish_cookie
nfs: Unknown symbol __fscache_unregister_netfs
nfs: Unknown symbol __fscache_maybe_release_page
nfs: Unknown symbol __fscache_read_or_alloc_page
nfs: Unknown symbol __fscache_uncache_page
nfs: Unknown symbol __fscache_register_netfs
nfs: Unknown symbol __fscache_write_page
nfs: Unknown symbol __fscache_wait_on_page_write
nfs: Unknown symbol __fscache_acquire_cookie


Install the Scientific Linux 6.x yum repositories:
rpm -ivh http://ftp.scientificlinux.org/linux/scientific/6x/i386/os/Packages/yum-conf-sl6x-1-1.noarch.rpm


Install the required GPG keys:
– for i386 arch:
rpm -ivh --force http://ftp.scientificlinux.org/linux/scientific/6x/i386/os/Packages/sl-release-6.1-2.i686.rpm

OR

– for x86_64 arch:
rpm -ivh --force http://ftp.scientificlinux.org/linux/scientific/6x/x86_64/os/Packages/sl-release-6.1-2.x86_64.rpm


Update from CentOS 6.0 to Scientific Linux 6.x using yum:
yum clean all
yum update


Remove some old packages:
rpm -e centos-release
rpm -e yum-plugin-fastestmirror


Reboot and enjoy!

After iPad (first generation) iOS 4.3 update, the App Store displays wrong release dates for updated applications, as can be seen in the captured image:

Wrong date: 29 October 2009, although the application update was released on 16 March 2011.

The App Store shows correct update date on my iPhone also running iOS 4.3:

Update: The issue is still not fixed in iOS 4.3.1, at least on my iPad.

Update 2: Issue still present in iOS 4.3.2

Update 3: Issue still present in iOS 4.3.3

Update 4: Issue still present on my iPad 2 in iOS 4.3.4, appears to be fixed on iPhone 4 iOS 4.3.4

Update 5: Issue still present on my iPad 2 in iOS 4.3.5

Update 6: Issue still present on my iPad 2 in iOS 5.0

It’s fairly easy to improve your AMP (Apache, MySQL, PHP) website speed:

1. Enable HTTP KeepAlives and persistent connections

2. Enable server-side output compression

3. Enable MySQL query caching

4. Install a PHP accelerator and optimizer

More… »

The romanian company Visual Fan through its AllView brand offers their first 3G dual SIM phone – the AllView Q1 GET. It comes with a 2.4″ screen, QWERTY keyboard, 3G / EDGE / GPRS (unlocked), Wi-Fi, Bluetooth, Push e-mail from Mobiquus and Bolt web browser. The price is about € 120 / $ 170.

The big news is they launched the first romanian Android tablet – the AllView AllDro which comes with a 7″ TFT display (800 x 480) , 2 or 4 GB memory (expandable up to 32 GB), 800 MHz processor, mini-USB port, Wi-Fi, HDMI output, 3400 mAh battery all for the price under € 170 / $ 240.

After Nokia and Microsoft partnership was announced and Nokia dropping Symbian in favor of Windows Mobile, looking back at all Nokia phones I have owned in time and compiled this list:

Nokia 3210
Nokia 6210
Nokia 6310i
Nokia 6630
Nokia 6680
Nokia 6021
Nokia E70
Nokia E51
Nokia 3120 classic

Good luck Nokia!

You can use the object file displaying tool – otool. The ldd equivalent otool parameter is -L:

-L print shared libraries used

Example:
$ otool -L ~/bin/wget
/Users/cbredi/bin/wget:
/usr/lib/libssl.0.9.8.dylib (compatibility version 0.9.8, current version 0.9.8)
/usr/lib/libcrypto.0.9.8.dylib (compatibility version 0.9.8, current version 0.9.8)
/usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.1)


If you do not have the otool command, make sure Xcode is properly installed.