Arch Linux

tazik

Member

Registered: 2011-11-11

Posts: 36

low speed of hard disk while copying or deleting files

Why I am a heavy file copy, past my system is very slow?

/dev/sda:
Timing cached reads:   20482 MB in  2.00 seconds = 10253.69 MB/sec
Timing buffered disk reads: 374 MB in  3.02 seconds = 124.01 MB/sec

[ali@Arch ~]$ sudo hdparm -t /dev/sda

/dev/sda:
Timing buffered disk reads: 392 MB in  3.01 seconds = 130.30 MB/sec

Evanlec

Member

From: NH, USA

Registered: 2007-12-16

Posts: 141

Website

Re: low speed of hard disk while copying or deleting files

Not sure what you're complaining about here, your hdparm numbers look about correct for a recent SATA hard drive.
Also, the cached reads value (hdparm -T) is of little importance.
The buffered disk reads are more accurate (hdparm -t). And both of your scores for buffered reads are very close.

---

Proud Archlinux Donor

tazik

Member

Registered: 2011-11-11

Posts: 36

Re: low speed of hard disk while copying or deleting files

What should i do???
When I will transfer or delete  a large file , my system too slow work even for a few seconds to lock it!
It is very annoying..
I got in Google Search But I not find use...
Sorry. My English is very bad

stqn

Member

Registered: 2010-03-19

Posts: 1,191

Website

Re: low speed of hard disk while copying or deleting files

Maybe your problem is related to swappiness. You can try to decrease it. (Search the forums and/or the web for that, you'll find plenty of information.)

Mustard

Member

From: Noblesville, Indiana

Registered: 2010-03-02

Posts: 39

Website

Re: low speed of hard disk while copying or deleting files

What should i do???
When I will transfer or delete  a large file , my system too slow work even for a few seconds to lock it!
It is very annoying..
I got in Google Search But I not find use...
Sorry. My English is very bad

I encountered your problem myself, when transferring large files via usb.  The desktop GUI would be virtually locked up and frozen, keyboard response was very slow.  I would hit ctr + alt + f1 to swith to a terminal and I would have to wait 60 seconds or more for the keypress to be recognised.  I believe its a bug in the linux kernel somewhere, but I can't recall exactly where I read it.

-edit-

I think this is the thread..
https://bbs.archlinux.org/viewtopic.php?id=112846&p=1

One suggestion, among many, was to disable 'usb legacy support' in BIOS.  It worked for some, but not for everyone.

Last edited by Mustard (2011-11-13 19:34:23)

tazik

Member

Registered: 2011-11-11

Posts: 36

Re: low speed of hard disk while copying or deleting files

i disable usb legacy.
Apparently, copy, past is good.
tanks dude