SOLVED - 2D draw very slow, intel / fglrx Xorg driver

Hey all,
My very first support post to the forums
I have an issue on a few computers whereby the 2D drawing in X is very slow. This happens on my laptop with Intel vga and also on a desktop when using the proprietary fglrx driver. I did not have this problem a few months ago when using stable. At that time, I installed testing and discovered the problem, so I went back to stable. Some time later an update to Xorg came into stable and since then the problem is now in the that tree also.
I thought it might be the new GEM stuff for the Intel driver, so I installed the 2.6.28 kernel when it was released - it did not solve the problem. Installing an NVIDIA card into the desktop box does solves the problem (can't do that for my laptop!). Because it's happening with the intel and fglrx drivers, but not with NVIDIA, I think it might be a problem with some Xorg component that the NVIDIA driver performs itself? But I've no idea..
Essentially, I'm using wmii as my desktop, which is a tiled window manager. Creating a new terminal window, switching between them and closing them all is very slow (taking a second or more), when it should be pretty much instantaneous.
When doing these things, Xorg takes up 90% CPU usage. By comparison, on the same laptop under Debian it only uses 10% CPU (and the problem does not exist).
I have created two desktop screencasts of what I mean. In the videos I am quickly opening a bunch of xterms and then later holding down 'switch between terminals', then holding down 'close terminal'. I run htop to show the CPU usage.
Arch, 4.9 MB, OGV - http://christophersmart.com/videos/archlinux-wmii.ogv
Debian, 5.7 MB, OGV- http://christophersmart.com/videos/debian-wmii.ogv
Any ideas?
Thanks a bunch!
Chris
Edit: FYI, the desktop has an Intel Core2 CPU with 8GB RAM and 2 x WD Raptor drives in RAID 0. With an ATI card, wmii is unusable.
Last edited by csmart (2009-01-17 00:19:57)

Well I first discovered the problem with the 'intel' driver and later when I set up Arch Linux on a desktop I was met with the same issue. I think it might be some part of Xorg that they both share, but it's not just a problem with the catalyst driver.. unfortunately

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[SOLVED] Network speed very slow, no apparent reason

Hello, recently I switched from Windows 7 RC1 to Arch on my home machine (I have used Gentoo, Ubuntu, and Fedora 10 on the same machine in the past), and for some reason network speed is very slow.
I have Verizon's 20mbit/5mbit package, and I have always gotten that speed.
Using speedtest.net and 100mb.test from cachefly on multiple computers I have come to the conclusion that it is infact my Arch install that is causing the problem:
- All other machines on my network are getting 20/5 (both wired and wireless)
- I ran a speedtest from 2 other machines using the ethernet cable that this PC is on. Again, full 20/5.
- scp transfer of 100mb.test from this PC -> other Arch box: ~2.8MB/s.
- scp transfer of 100mb.test from other Arch box -> this PC: ~2.8MB/s.
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- scp transfer of 100mb.test from this PC -> Chicago Server (dual gbit lines): ~563KB/s
- scp transfer of 100mb.test from Chicago Server -> this PC: ~91KB/s
speedtest.net result:
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I have tried disabling TCP window scaling, and appending my hostname to /etc/hosts.
What is weird though is that the other Arch box has an identical network config, I don't see any reason why it shouldn't work.
My NIC is an integrated Realtek something, I can get the exact model if needed.
Last edited by whipsch (2009-06-05 18:29:21)

Hi, whipsch
Can you try ethtool to see if your ethernet card is actually negociating and using a 100Mb full duplex link on your LAN ? If not you can try to force the link parameter with ethtool. Also maybe the driver of your NIc has options related to link negociation.
Hope this helps,
JF

[SOLVED] Pacman is very slow inside VirtualBox

Hello everyone, I've used Arch Linux for a while now and I never had any serious issue. I've been testing Arch inside VirtualBox recently and it installs fine and all that but when I try to update the system, updating repos is very slow, once the repos are up-to-date, pacman offers the latest packages to download very fast and waits for me to press 'y'. Once I do press 'y', it downloads the packages very slow.
I have a 15 Mbps connection (goes up to 30
Mbps when bandwidth os available).
I'm using a mirror close to
My state NY (rit, umoss, vt, or even gatech).
The /etc/rc.conf and /etc/hosts have the same hostname.
I've tried to test in VMware server but there was a problem with vmware. Fedora 13 also updates really slow as well. Debian and Ubuntu don't have a problem.
I have Arch on my flash drive and I booted it up on my machine and pacman works much faster when not inside the VM. The weird thing is that when I was using and older version of VirtualBox, everything was working great, which makes me think that it's a Virtualbox but.. but then why is Debian working fine but Fedora and Arch slow?
Any suggestions?
Last edited by Cows (2010-08-26 05:34:49)

Alright, since no one has posted, I'm going to assume no one knows how to fix this yet.
I've been messing around for the last couple of days, and I was looking into the network options that VirtualBox has.
From all the options:
NAT
Bridged Networking
Internal Networking
Host-Only Networking
NAT and Bridged Networking seem to make the most sense, but the problem was that NAT requests a new IP from the router and uses it's own driver to do the networking, I saw this as that the VirtualBox NAT driver might be messing up how the traffic flows (including the speed) in Arch Linux and possibly in Linux in general.
For Bridged Networking, the VM uses the physical adapter of the host, and that shot me right away. I told myself, why use an intermediate driver to communicate with the router if I can use the physical adapter directly and pull information faster. At the point my statement was theoretical, but once I booted up Arch Linux and tried it... the slowness was gone. Pacman now updates repos and downloads packages much faster. Fedora 13 in the VM also works much faster as well, not only for updating repos and downloading packages, but also for web browsing within the VM.
I think that there might either be a bug or performance issue that's affecting the NAT driver in VirtualBox version 3.2.8 r64453, because you do recall I said that I was using the NAT driver in an older version of VirtualBox and it wasn't slow.
I hope this can help someone in the future.
EDIT: Check this page about Networking options in VirtualBox and what they do:
http://www.virtualbox.org/manual/ch06.html#network_nat
- Jon
Last edited by Cows (2010-08-26 05:42:22)

[SOLVED] Web navigation very slow

I've installed the last version of ArchLinux (archlinux-2009.02-ftp-i686.iso) and the web navigation is very slow. Loading Google's home page in Windows is instantaneous but in Linux it takes about 9 seconds. And the rest of web pages are the same. I've noticed that, when loading a web page, it takes a lot of time in "Looking up www.google.es..." so I guess that it is a networking problem. I've tried several web browser with the same result.
I've tried several changes which I found in Internet:
a) According to http://bbs.archlinux.org/viewtopic.php?id=61408:
- I included the host name in /etc/hosts
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b) According to http://wiki.archlinux.org/index.php/Qui … ux_Install:
- In /etc/rc.conf, I updated:
gateway="default gw 192.168.1.1"
ROUTES=(gateway)
because my router is in 192.168.1.1 and the page recommended to remove the ! in ROUTES=(!gateway)
- I added /etc/resolv.conf.head:
nameserver 192.168.1.1
These changes improved a bit the performance but I am not satisfied yet. It takes a lot of time to retrieve the 1st page from a server (however, afterwards, the navigation in that server is normal). It looks like there is no cache for DNS names.
Any hint?
Thank you in advance
Last edited by jjjaime (2009-02-23 20:18:22)

jjjaime wrote:Finally I discovered the reason of the problem. The router offered two DNS servers. However, the 1st one didn't work (even the IP address didn't respond to a ping). This provoked all the delay.
Glad you found it! One of the first things I do when setting up a system behind the typical soho router, is to put either the isp's primary and alternate dns addresses into the router itself. (I actually prefer OpenDNS addresses - scroll to the bottom right of their web page)
In days of old when soho routers didn't always follow internet rfq's, and seemed to have their internal dns routines tuned for Windows / Mac, doing this helped bypass that nonsense. Now the *nix boxes had no problems with slow dns lookups, and the windows/mac boxes were just fine as well. I suppose soho routers are better these days, but I still do this.

Dreamweaver CC opening files very slow iMac with Fusion drive

I am working on a small website based off on Bootstrap 3. Now that I am almost done with the project opening files take a few seconds to open them (in code view). I have tried the various fixes like resolveremoteurltoipaddress=FALSE but still the files load very slow. On my Windows Machine it loads very fast and that machine is 4 years old. The iMac I am using at work is the latest version with decked out specs and only Dreamweaver CC and Edge Code have very slow opening of files. Creating new documents inside Dreamweaver CC is fast. Is there a way to make Dreamweaver open files faster? How to make it load faster, open documents faster, especially in code view. My initial thought is maybe its because I am linking to a few JS library like TypeKit and jQuery but I have not experience these problems on my Windows PC. Any help would be appreciated.

I am working on a small website based off on Bootstrap 3. Now that I am almost done with the project opening files take a few seconds to open them (in code view). I have tried the various fixes like resolveremoteurltoipaddress=FALSE but still the files load very slow. On my Windows Machine it loads very fast and that machine is 4 years old. The iMac I am using at work is the latest version with decked out specs and only Dreamweaver CC and Edge Code have very slow opening of files. Creating new documents inside Dreamweaver CC is fast. Is there a way to make Dreamweaver open files faster? How to make it load faster, open documents faster, especially in code view. My initial thought is maybe its because I am linking to a few JS library like TypeKit and jQuery but I have not experience these problems on my Windows PC. Any help would be appreciated.

[SOLVED] Netcfg@.service very slow...

Hi!
I was wondering why is [email protected] taking so long to load:
systemd-analyze blame
4206ms [email protected]
2220ms psd.service
685ms systemd-tmpfiles-setup.service
626ms systemd-vconsole-setup.service
252ms systemd-udevd.service
169ms systemd-remount-fs.service
65ms systemd-logind.service
35ms var-log.mount
29ms systemd-sysctl.service
22ms systemd-udev-trigger.service
12ms tmp.mount
5ms systemd-user-sessions.service
1ms sys-fs-fuse-connections.mount
I managed to get rid of consolekit, and i use a psd.timer that makes psd start 20sec from startup. So netcfg is the only thing is slowing my boot process.
The strangest thing is that networkmanager.service takes only 0.7s to load, and it seems very weird to me that network manager is faster then netcfg.
Here it is my "mynetwork" setup:
CONNECTION='wireless'
DESCRIPTION='A simple WPA encrypted wireless connection'
INTERFACE='wlan0'
SECURITY='wpa'
ESSID='my ESSID'
## Uncomment if the supplied ESSID is hexadecimal
#ESSID_TYPE='hex'
KEY='********************'
IP='dhcp'
# Uncomment this if your ssid is hidden
#HIDDEN=yes
I run
systemctl enable [email protected]
Network is working, so it's not a bug somewhere in netcfg, it is only SLOW. Really slow.
Thanks for any help!
Last edited by nierro (2012-09-03 15:46:28)

Is 4.2secs really slow? I think it may just be kind of nitpicking since with systemd's parallelization it definitely would not boot four seconds faster if you did not enable it.
Oh i know...but networkmanager was really faster...is there a reason?
EDIT: with networkmanager, the overall
systemd-analyze
was 10s, while now is
systemd-analyze
Startup finished in 6769ms (kernel) + 7293ms (userspace) = 14063ms
Last edited by nierro (2012-09-03 15:19:40)

Very slow wine game/nouveau driver issue

Hello everyone, I'm trying to play a game (Civ 4) using wine. However, it was extremely laggy, and since it runs well on Windows (I have dualboot) plus it's not a very recent game and my laptop is reasonnably well-equipped, I thought it should work well on arch as well. Here is the link in the wine db. I should also add that I'm a very novice wine user so that might well be the (a) source of problem(s). Apart from the lagging, according to the sensors, the CPU's temperature rose from ~50°C to ~100°C within about A MINUTE.
I checked cpupower to see that the cpu was allowed to run at max speed and tried optirun to use the NVIDIA graphics card rather than the Intel graphics card I have installed. I'm by no means sure that the drivers are installed or configured properly by the way...
Starting with optirun looked to work (the loading screen came up) but when the main window should've been loaded, the application terminated with the following output:
err:winediag:wined3d_dll_init The GLSL shader backend has been disabled. You get to keep all the pieces if it breaks.
libGL error: dlopen /usr/lib32/xorg/modules/dri/nouveau_dri.so failed (/usr/lib32/xorg/modules/dri/nouveau_dri.so: wrong ELF class: ELFCLASS64)
libGL error: unable to load driver: nouveau_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: nouveau
libGL error: dlopen /usr/lib32/xorg/modules/dri/i965_dri.so failed (/usr/lib32/xorg/modules/dri/i965_dri.so: cannot open shared object file: No such file or directory)
libGL error: unable to load driver: i965_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: i965
[VGL] ERROR: glXCreateContextAttribsARB symbol not loaded
terminate called without an active exception
Before today I only used optirun for VLC (though I don't really see a difference) and to check whether it would run with glxgears. Neither case had any problems. I tried softlinking nouveau_dri.so from the "/usr/lib/..." to the "/usr/lib32/..." directory as well as copying it but neither helped.
Some info:
Graphic cards:
01:00.0 3D controller: NVIDIA Corporation GF117M [GeForce 610M/710M/820M / GT 620M/625M/630M/720M] (rev ff)
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
Packages:
local/xf86-video-intel 2.99.916-2 (xorg-drivers xorg)
X.org Intel i810/i830/i915/945G/G965+ video drivers
local/xf86-video-nouveau 1.0.11-1 (xorg-drivers xorg)
Open Source 2D acceleration driver for nVidia cards
local/nouveau-dri 10.2.8-1
Mesa drivers for Nouveau
local/bumblebee 3.2.1-3
NVIDIA Optimus support for Linux through VirtualGL
Some advice how to fix the driver issue or about what else might be causing the problems is greatly appreciated!

Besides agreeing with the notion above, you lack lib32-nouveau-dri and thus are unable to use acceleration with 32bit programs which is the undelying issue here.

Raid mode very slow/ crashing after installing driver (Z68A-GD65 (G3))

I recently purchased a Z68A-GD65 (G3) motherboard, i5-2500K, 8 gb ram, and a Crucial 64GB 4m SSD drive. The intention was to use the SSD drive for Intel Smart Response Tech.
Instructions tell me to place the SATA ports in RAID mode, which I did. During installation of Windows 7 (64-bit), I provided the "F6" raid drivers which installed. After that point, my hard drive (a WD 250GB SATAII drive) begins to perform incredibly slow. Once Windows 7 installs, which takes way longer than it should, Windows has problems booting and won't work properly.
I tried installing Windows 7 without the "F6" raid drive on install and that worked fine. Everything seemed to be working great. I then installed the Intel Rapid Storage Tech software and rebooted. Now my system is acting up again. It takes far longer to boot, it shuts down as soon as it boots, and it has even blue screened on boot. It is very unstable.
My SSD is unplugged during all of this. I'm just trying to get Windows 7 to run properly on my one mechanical drive in raid mode.
Do I have a bad motherboard? Anyone have any ideas?
Edit: I'm not using the Marvell ports. The hard drive works fine in IDE/ACHI modes... I've been using it for years.
Thanks

So it turned out that the issue was the hard drive itself. It had been running flawlessly for years as my system drive. However, the Intel iastor driver exposed a hidden issue with the drive.
I decided to check the Windows system event log for any clues. In there I saw errors with event id 9 on iastor. They were lined up with the times of the hangs and blue screens. Solutions I found online for this issue did not help. Luckily I have two hard drives in my system, although they are both the same model. I moved my data around and clean installed Windows on the other drive instead. The hangs and blue screens are no longer occurring.

Very slow reads from Mirrored drives

Hi all -
I'm running a Tiger G5 Xserve with mirrored 80Gig SATA drives as the primary HD, and a standalone 250Gig SATA drive in the third bay. At the end of each workday, SuperDuper does a smart update from the mirrored drive to the standalone drive as a backup, and it takes about 40 minutes to run through 40Gigs of data.
I also backup via SuperDuper directly from the mirrored drive to an external 2.5" 80Gig firewire drive once a day for offsite backup, and that takes 40 minutes.
That means I'm getting nearly identical performance to an onboard SATA 3.5" and an external Firewire 400 2.5" - strongly suggesting that it's something in the RAID mirror, rather than in the interface or SATA channel of the receiving drive.
Last week, for some reason, I selected the standalone drive as the source for the backup, and it took 8 minutes. After a bit testing, it seems clear that doing the same backup takes roughly 5x longer when the source is the mirrored drive. The server load is quite light at backup time - under 20% before the backup, under 50% during the backup, even though smart update has a LOT of files to sift.
My understanding is that mirrors are often slower to write than other configurations, as they have to sync, but this is almost entirely a reading transaction, and I've never seen anything about mirrors being so slow to read relative to a standalone.
It this normal? an artifact of the software RAID? Something misconfigured?
It's not a huge problem for me, but since I run this procedure twice a day, it'd sure be nice to have it be one that I come back to in 10 minutes, instead of an hour.
Thanks in advance!

Hi Dean Larue-
This may all be logical, but I would double-check the SuperDuper settings just to make sure that you aren't doing different backup types.
The two 80GB are doing a lot of other stuff whilst you are backing them up and the 250GB just had to read and push files.
I would also imagine that the 2X80GB drives are fuller percentage-wise than the 250GB drive as this too would impact performance.
As it has no files to compare while backing up, SuperDuper is often faster doing the initial backup. Comparing the files on the source drive to the many files on the backup drive takes time.
Luck-
-DP

Very slow performance; external boot drive the cause?

Greetings.
I bought a 500 GB Hitachi drive for my iMac intending to install it myself. But, alas, I have an iSight iMac and I think it's beyond my ability to do the job. A Mac dealer nearby can do it for me, but wants the computer for two or three days, even thought the installation takes about an hour. They will not make an appointment for me to come in with it and wait.
So I installed it the drive in an OWC Mercury Elite case, cloned the original drive, and have been booting from the Hitachi via Firewire 400. Just about everything is running at well under previous speeds. Lightroom now takes as much as two to five minutes to spool a large file for printing and sometimes does not even send the file to the printer (in fairness, the latter issue happened sometimes with the internal drive – I wrote about it here before – but at least it didn't take a long time to spool the file, which has to happen each time I click "print" until at last it actually goes to the printer).
I'm getting slow performance from Safari (4.1.3), Mail (2.1.3), Lighroom 2, Photoshop (CS3). I can't say I've noticed problems elsewhere, but I rarely use other applications.
I have done all the usual maintenance tasks, besides those the computer does automatically. Repaired permissions. Emptied caches. Burned sage. Etc.
If this is the inevitable result of running from an external disk, then I'll have to brave the installation or pay someone to do it (which I would do immediately if I knew someone who would do it "while-u-wait").
If, however, this sounds like booting from the external drive should not be the problem, and there is something I might do to speed things up, I'd be grateful for your suggestions.
As always, thank you.
Leonard B.

Too bad about the site redesign. I had a draft of this message started, then got busy. Now I have no idea where to look for it. (And what happened to the Preview function?)
ANYWAY… I talked to a tech person at Other World Computing about the problem. He was of the opinion that the iMac SHOULD be showing some slower response if booted from the external drive, but that maybe the sluggishness in this case was excessive. He had me run a hardware scan to see whether there were any bad blocks. After 24 hours, Speed Tools reported no problems. So now I have run every diagnostic and repair tool I know of and every one that was suggested (every one that I own, that is), and the computer is still hesitating so much that I just have to get up and walk away from it sometimes in order to stay sane.
I am booting from the original hard drive when I have to do extended internet research (Safari being the biggest speed offender), but run the iMac from the external drive when I have to do photo editing, since all my preferences, Lightroom libraries, etc., are located there. If I had the time to figure out just where the essential, and relevant, system and application files are located, I suppose that I could copy them and move them onto the internal drive. Then I could just use the external for storage of the image files (can't do that on the internal; there's not enough space). However, if what is going on (slowness issue) is indicative of a faulty drive, I'd rather not use it at all, even as a storage or backup drive.
Any thoughts? Do you suppose this might be a problem with the computer, not with the new drive? I'd hate to ask OWC to exchange it (even if they would do that) and then find out I've got the same trouble.
Thanks again in advance.
Leonard

Ftp is very slow locally with intel solaris 8 with 98 se buffalo ( 100mps)

why? what to check? ping ok.
3 com 3c905b card installed with solaris 8 connected with linksys router.
Buffalo installed in 98 se 100 mps
cable modem with dynamic ip.
I have tried FTP in 98 SE with LINUX 6.0 RH via LINKSYS router with ver 1.37 ( 1.37 is even worser than 1.36-because the status is not refresh but itself) is ok.
but 98SE with intel solaris 8 is very slow with wu-ftp(ipswitch) 1%, then 1%....etc an hour later still 1%. I shut down the solaris try a few times, then it is ok. all connection is tight.
some one said::
The most common mistake that causes bad throughput is mixing
full-duplex and half-duplex stations on the same LAN.
HOWTO solve full-duplex and half -duplex??
thanks for your attention!
SUN learner.

why? what to check? ping ok.
3 com 3c905b card installed with solaris 8 connected with linksys router.
Buffalo installed in 98 se 100 mps
cable modem with dynamic ip.
I have tried FTP in 98 SE with LINUX 6.0 RH via LINKSYS router with ver 1.37 ( 1.37 is even worser than 1.36-because the status is not refresh but itself) is ok.
but 98SE with intel solaris 8 is very slow with wu-ftp(ipswitch) 1%, then 1%....etc an hour later still 1%. I shut down the solaris try a few times, then it is ok. all connection is tight.
some one said::
The most common mistake that causes bad throughput is mixing
full-duplex and half-duplex stations on the same LAN.
HOWTO solve full-duplex and half -duplex??
thanks for your attention!
SUN learner.

I have an iMac4.1 and my iPhoto is very slow and the thumbnails correspond to the wrong pictures. How do I fix this? Or is my iMac too old? Will getting a new iMac solve this problem?.

I have an iMac4.1 and my iPhoto is very slow and the thumbnails correspond to the wrong pictures. How do I fix this? Or is my iMac too old? Will getting a new iMac solve this problem?
I realize is only 512MB of memory but I want to make sure that a new iMac will solve this problem. Can the new iPhoto handle 10GB or more of photos? Or do I have to go to Picasa anyways in which case I can buy any computer to do that?

The model of Mac is not partcularly relevant, it's the version of the OS and iPhoto that matter.
iPhoto - since 2006 - is good for 250,000 images.
Regards
TD

IMac 3.06 GHz Intel Core 2 Duo with 12gb of RAM running very very slow.

My late 2010 iMac 3.06 GHz Intel Core 2 Duo with 12gb of ram is running very slow. It takes a very long for the computer to boot with the desktop taking ages to fully load. Applications are also taking an unholy amount of time to load with the spinning wheel always appearing through out use, and they often crash or don't respond and close during use. I'm talking applications like Word taking 3 minutes to load and getting the spinning wheel when font size is tried to be changed and crashing and closing if a large volume of text is attempted to be pasted into a document.The computer is also failing to shut down properly just staying on a blue screen. I recently wiped and completed a fresh install however the issues came back.
As you can imagine after spending so much on the computer I'm not best pleased about these issue, I've spoken to the apple staff in my local store by they weren't very helpful and seemed to no little about computers and the so called "Genius" who I spoke to about my issue was a joke, repeating himself and talking utter rubbish, while I understand you need to look at a computer to get a real picture of an issue, some advice could of been provided. I haven't got time to take the computer to the store at the moment and get a technician to look a it, so I was wondering if anyone else had experienced these issues and knew what caused the fault, and that way if possible I can repair the issue myself.
Thanks in advance for any help on the issue it’s much appreciated. At the moment I'm pretty close to ditching the thing and buying an Alienware!

See:
Mac Maintenance Quick Assist,
Mac OS X speed FAQ,
Speeding up Macs,
Macintosh OS X Routine Maintenance,
Essential Mac Maintenance: Get set up,
Essential Mac Maintenance: Rev up your routines,
Maintaining OS X,
Five Mac maintenance myths, and
Myths of required versus not required maintenance for Mac OS X for information.

My intel imac is running very slow

I have a 20" intel imac and recently it has started to run very slow. It takes ages to start up and once started it takes forever to start any application. i have tried various software to clean it up but still no better. When starting it in safe mode it seems to be a lot better. Any ideas what to do next. i have over 150gb left so space is not an issue. HELP.

Hi Mathew
{quote}I have a 20" intel imac and recently it has started to run very slow. It takes ages to start up and once started it takes forever to start any application. {quote}
Have you ran Repair Permissions from Disk Utility?
Use this ☞ [How to repair disk permissions|http://www.simplehelp.net/2007/05/14/how-to-repair-disk-permissions -in-os-x> article to assist you!
{quote} i have tried various software to clean it up but still no better. {quote}
You don't say what software you have tried?
I also use ☞ [Onyx|http://www.titanium.free.fr/pgs/english.html] it allows me to run the system maintenance options like repair permissions, run the periodic scripts and optimize the OS X.
Dennis

Yosemite is very slow when i switch on. can someone say why and i can solve the problem??

yosemite is very slow when i switch on. ten or more seconds. why? how i can solve this problem??
Thanks riccardo.italy.

The following items or conditions can slow a Mac. Please see if any of them apply:
1) Are you running any anti-virus/internet security applications?
2) Are you running any "cleaning/tune-up/optimizations" applications?
3) Any peer-to-peer or torrent downloading software?
4) Any third-party disk backup software that came bundled with an external hard drive?
5) Any online backup scheme other than iCloud or DropBox (Carbonite; GoogleDrive; MS One Drive)?
6) Did your financial institution ask you to install Trusteer EndPoint Protection (also known as Trusteer Rapport)?
If you can answer "yes" to any of those questions, you have some unneeded and performance-robbing software installed.

*SOLVED* - 2D draw very slow, intel / fglrx Xorg driver

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SOLVED - 2D draw very slow, intel / fglrx Xorg driver