Performance Issues with AMD64 3000+, 1.5GB RAM, FreeBSD 5.4-RELEASE

Mark Kane mark at
Thu Aug 25 18:39:34 GMT 2005

Roland Smith wrote:
>>So you have no similar problems in -STABLE? How about when untarring a 
>>bigger file and playing audio? If not, then maybe trying STABLE on that 
>>other drive might be a good idea.
> Yesterday I was making a level 0 dump of my /usr partition (32429 MB) to
> another drive, which was being compressed with bzip2. CPU usage was
> around 97% [for bzip2], but I didn't notice anything. While the dump was
> underway, I was browsing with Firefox, and writing in emacs.

Wow, that would be really nice. I notice whenever I compress something 
like a backup of my Thunderbird Inbox files (several hundred megs) in 
bzip2 format it goes nowhere near 100% or even 90% CPU usage. The 
problems I am talking about occur even when CPU usage is real low as 
well. :-\

>>The reason I wanted to see any changelog was to see if there is any 
>>changes to this part of the code at all before trying it, but file by 
>>file I would probably be lost since I am not a programmer.
> The file is the most usual way to partition code. How else would you
> know where to look?

True. I meant I wouldn't know what files to look at since I don't know 
really anything about programming or how things are done internally. I'm 
kind of used to the subversion approach of revisions for everything 
instead of file by file. Then it would have one log showing all the 
changes of that revision all in one place. I see how the other way makes 
sense though.

> Some other thing you might look at is if too many devices are sharing an
> interrupt. Try ps -xa|grep '\[irq.*\]' If so, that might give problems,
> I think. Anything in the logfiles?

[mixx941 at amd64:~]% ps -xa|grep '\[irq.*\]'
    12  ??  WL     0:05.59 [irq1: atkbd0]
    13  ??  WL     0:00.00 [irq3: sio1]
    14  ??  WL     0:00.00 [irq4: sio0]
    15  ??  WL     0:00.00 [irq5:]
    16  ??  WL     0:00.00 [irq6: fdc0]
    17  ??  WL     0:00.00 [irq7: ppc0]
    18  ??  WL     0:00.00 [irq8: rtc]
    19  ??  WL     0:00.00 [irq9: acpi0]
    20  ??  WL     0:00.00 [irq10:]
    21  ??  WL     0:00.00 [irq11:]
    22  ??  WL     1:03.19 [irq12: psm0]
    23  ??  WL     0:00.00 [irq13:]
    24  ??  WL     0:01.84 [irq14: ata0]
    25  ??  WL     0:00.00 [irq15: ata1]
    26  ??  WL     0:04.11 [irq16: atapci3]
    27  ??  WL     1:13.49 [irq17: pcm0]
    28  ??  WL     0:00.00 [irq18: fwohci0+]
    29  ??  WL     1:35.00 [irq19: skc0 atapci2]
    30  ??  WL     0:00.00 [irq20:]
    31  ??  WL     0:00.00 [irq21: ohci1]
    32  ??  WL     0:00.00 [irq22: ohci0+]
    33  ??  WL     0:00.00 [irq23:]
    34  ??  WL     0:00.00 [irq0: clk]

I don't see anything in /var/log/messages or any errors in dmesg.


More information about the freebsd-questions mailing list