Skip site navigation (1)Skip section navigation (2)
Date:      Wed, 30 Jan 2008 21:42:16 -0000
From:      "Steven Hartland" <killing@multiplay.co.uk>
To:        <freebsd-performance@freebsd.org>, "Ivan Voras" <ivoras@freebsd.org>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: newfs locks entire machine for 20seconds
Message-ID:  <008201c86388$fd159010$b6db87d4@multiplay.co.uk>
References:  <030401c862a0$23918d50$b6db87d4@multiplay.co.uk> <fnq4fp$m54$1@ger.gmane.org>

next in thread | previous in thread | raw e-mail | index | archive | help

----- Original Message ----- 
From: "Ivan Voras" <ivoras@freebsd.org>
>> The machine is running with ULE on 7.0 as mention using an Areca 1220
>> controller over 8 disks in RAID 6 + Hotspare.
> 
> I'd suggest you first try to reproduce the stall without ULE, while
> keeping all other parameters exactly the same.

Ok tried with an updated 7 world / kernel as of this afternoon and with 4BSD
instead of ULE and no difference the machine still locks up with no activity
for anywhere from 20 to 30 seconds.

Here's a snapshot from top under cpu and io modes when the stall has occured
[top]
last pid:  1102;  load averages:  0.02,  0.08,  0.07                                           up 0+00:09:37  21:39:13
162 processes: 4 running, 145 sleeping, 13 waiting
CPU states:  0.0% user,  0.0% nice,  0.4% system,  0.0% interrupt, 99.6% idle
Mem: 60M Active, 19M Inact, 54M Wired, 56K Cache, 27M Buf, 3809M Free
Swap: 4096M Total, 4096M Free

  PID USERNAME  THR PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
   12 root        1 171 ki31     0K    16K RUN    0   8:59 97.90% idle: cpu0
   11 root        1 171 ki31     0K    16K RUN    1   8:57 95.80% idle: cpu1
 1102 root        1  -8    0  4752K  1256K physrd 1   0:01 19.64% newfs
    4 root        1  -8    -     0K    16K -      0   0:00  0.10% g_down
 1048 root        1  96    0  7656K  2544K CPU0   0   0:01  0.00% top
 1054 root        1  96    0  7656K  2348K CPU1   1   0:01  0.00% top
  863 root        1  96    0   131M 15768K select 0   0:00  0.00% httpd
 1055 root        1  96    0 32928K  4656K select 0   0:00  0.00% sshd


last pid:  1102;  load averages:  0.02,  0.08,  0.07                                           up 0+00:09:37  21:39:13
162 processes: 4 running, 145 sleeping, 13 waiting
CPU states:  0.0% user,  0.0% nice,  0.4% system,  0.0% interrupt, 99.6% idle
Mem: 60M Active, 19M Inact, 54M Wired, 56K Cache, 27M Buf, 3809M Free
Swap: 4096M Total, 4096M Free

  PID USERNAME   VCSW  IVCSW   READ  WRITE  FAULT  TOTAL PERCENT COMMAND
   12 root          9    154      0      0      0      0   0.00% idle: cpu0
   11 root         28      5      0      0      0      0   0.00% idle: cpu1
 1102 root          5      0      0      0      0      0   0.00% newfs
    4 root         14      0      0      0      0      0   0.00% g_down
 1048 root          1      0      0      0      0      0   0.00% top
 1054 root          1      0      0      0      0      0   0.00% top
  863 root          1      0      0      0      0      0   0.00% httpd
[/top]

================================================
This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. 

In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337
or return the E.mail to postmaster@multiplay.co.uk.




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?008201c86388$fd159010$b6db87d4>