Christian Røsnes schrieb:
>
> Hello
>
> Everytime I run dbench 1.3 on a linux kernel 2.4.18 from the XFS cvs
> checkout,
> I'm experiencing complete lockups on Compaq Proliant DL380 G2 servers.
> * Dual cpu 1266 Mhz,
> * SmartArray Raid controller
> * 2 x 36 GB HD in Raid 1
> * 1256 MB RAM
> * eepro100 NIC
>
> (I've installed RedHat 7.2 with the SGI 1.0.2a installer.)
>
> Dbench works fine when running it with the 2.4.9-13SGI_XFS_1.0.2smp kernel
> from the SGI installer.
>
> The freeze happens evertime when I start dbench 1.3 with the 2.4.18 kernel:
> (I'm running it on my /usr partition which is xfs formatted and mounted)
>
> Eg:
> ./dbench 10
> Starting 10 clients
> <system freezes>
Hi
I was doing stress test with my own script on several 2.4.x kernels. The
script generates some hundred cp processes copying a directory tree with
some thousand files, while running heavy nfs traffick and some bonnie's
in the background. I have used this to test performance of different
filesystems on different kind of raid, both hard- and software. What
came out was that
1) software raid performs extreemly weel, even raid5 with xfs if you
have external log. Difference between ext2, ext3 and xfs was almost zero
in this test.
2) Every 2.4.x kernel beside 2.4.9-XXSGI_XFS_1.0.2 crashed with this
test on different hardware! Althought I didn't try too many kernels I
tried newer kernels than 2.4.9 which was available as RPM and they
crashed too.
-Simon
>
> The system then becomes unresponsive, and reseting the machine
> is the only way to get it back on its feet.
> I've tested this on two different DL380 G2s, and it locks up on both.
>
> Is anyone else seeing this ?
>
> Is there any way I can debug this ?
> When the system freezes, there are no more entries in /var/log/messages.
> There are no Oopses.
>
> I've included my kernel config file (gzipped) and the message output found
> in
> /var/log/messages (also gzipped).
>
> Any help appreciated. Thank you.
>
> (I do not have physical access to the machines at the moment,
> but will on Monday)
>
> Christian
>
> -------------------------- CHECKOUT INFO -------------------------------
>
> I've tried checkouts Thursday,Friday and today - all freeze up
> when running 2.4.18 and dbench 1.3:
>
> #!/bin/sh
> #
> export CVSROOT=':pserver:cvs@xxxxxxxxxxx:/cvs'
> cvs login
> # FULL CHECKOUT
> cvs -z3 checkout linux-2.4-xfs
>
> ------------------------------ XFS INFO --------------------------------
>
> Here's the xfs info from the /usr partition in run dbench on.
>
> [root@dl01 xfs]# xfs_info /usr
> meta-data=/usr isize=256 agcount=14, agsize=262144 blks
> data = bsize=4096 blocks=3584280, imaxpct=25
> = sunit=0 swidth=0 blks, unwritten=0
> naming =version 2 bsize=4096
> log =internal bsize=4096 blocks=1200
> realtime =none extsz=65536 blocks=0, rtextents=0
>
> ------------------------------ MOUNT INFO --------------------------------
>
> I've tried to mount /usr with both default logbufs and logbsize values,
> and also the parameters listed for /usr below (logbufs=8,logbsize=32768).
> There are dbench lockups in both cases.
>
> [root@dl01 xfs]# mount
> /dev/cciss/c0d0p6 on / type xfs (rw)
> none on /proc type proc (rw)
> /dev/cciss/c0d0p1 on /boot type ext2 (rw)
> none on /dev/pts type devpts (rw,gid=5,mode=620)
> /dev/cciss/c0d0p7 on /home type xfs (rw,logbufs=8,logbsize=32768)
> none on /dev/shm type tmpfs (rw)
> /dev/cciss/c0d0p2 on /usr type xfs (rw,logbufs=8,logbsize=32768)
> /dev/cciss/c0d0p3 on /var type xfs (rw,logbufs=8,logbsize=32768)
>
> ------------------------------------------------------------------------
> Name: messages.gz
> messages.gz Type: application/x-gzip
> Encoding: base64
>
> Name: kernel_config_file.gz
> kernel_config_file.gz Type: application/x-gzip
> Encoding: base64
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