Mysteriously Slow Performance - running CentOS 6.2

Issues related to hardware problems

Mysteriously Slow Performance - running CentOS 6.2

Postby zebrastripe » 2012/02/13 17:40:50

Hello!

I have a server running CentOS 6.2. The computer has 32GB of RAM, 2 dual core xeon 3GHz processors, but it seems to run my apps REALLY slowly.

I used the DaCapo benchmark suite to do some tests. The server takes 64 seconds to run the "avrora" benchmark. (By comparison, my laptop running Ubuntu 10.04 with 2GB ram and 1 dual core xeon 2.4GHz processor runs the same test in 9 seconds.)

I've tested the hard drives, and they run quite fast. The server is also not running a GUI.

The problem is, I really don't have a good idea where to start on tracking down why this is running so slow. Does anyone have any ideas, or suggestions of avenues for me to explore? I'm wondering if I have configured something in the OS incorrectly.

Thanks so much for your time,
Andy
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Mysteriously Slow Performance - running CentOS 6.2

Postby pschaff » 2012/02/13 18:41:46

Welcome to the CentOS fora. Please see the recommended reading for new users linked in my signature.

Not much to go on. All I can suggest is that you provide more information about your system by running "./getinfo.sh" and showing us the output file.
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Re: Mysteriously Slow Performance - running CentOS 6.2

Postby zebrastripe » 2012/02/14 03:45:55

Thank you kindly for your reply.

Hopefully this time my post is a little bit improved to have enough information :) Sorry if it is not again!!! Also, sorry if I have chosen the wrong category for this post. At the beginning I assumed it was a hardware problem.

At the end is the output of get_info.sh.

To add a little bit more information(and my apologies for the vagueness here, but it seems like there is something in the following detail):

The server in question is in a remote place, however I've installed CentOS 6.2 on a local server to try and reproduce the problem. The server has a minimal install without a GUI. I ran the Java benchmark "avrora" from the "DaCapo" library "http://dacapobench.org/" The result was that it took ~1000 seconds to complete.

Next I reinstalled CentOS 6.2 with the development workstation option(on the same server), and loaded into the GUI. Now the same benchmark runs in 12 seconds, which is a perfectable great time!

So now my question is: what is different between these two installs? And how can I bring my remote server up to having whatever is missing? (I have no out-of-band access)

Thanks again!



Information for general problems.
Code: Select all
== BEGIN uname -rmi ==
2.6.32-220.4.1.el6.x86_64 x86_64 x86_64
== END   uname -rmi ==

== BEGIN rpm -qa \*-release\* ==
centos-release-6-2.el6.centos.7.x86_64
== END   rpm -qa \*-release\* ==

== BEGIN cat /etc/redhat-release ==
CentOS release 6.2 (Final)
== END   cat /etc/redhat-release ==

== BEGIN getenforce ==
Enforcing
== END   getenforce ==

== BEGIN free -m ==
             total       used       free     shared    buffers     cached
Mem:         32108       1253      30854          0         87        654
-/+ buffers/cache:        510      31597
Swap:        34287          0      34287
== END   free -m ==

== BEGIN rpm -qa yum\* rpm-\* python | sort ==
python-2.6.6-29.el6.x86_64
rpm-build-4.8.0-19.el6.x86_64
rpm-libs-4.8.0-19.el6.x86_64
rpm-python-4.8.0-19.el6.x86_64
yum-3.2.29-22.el6.centos.noarch
yum-metadata-parser-1.1.2-16.el6.x86_64
yum-plugin-fastestmirror-1.1.30-10.el6.noarch
yum-plugin-security-1.1.30-10.el6.noarch
yum-utils-1.1.30-10.el6.noarch
== END   rpm -qa yum\* rpm-\* python | sort ==

== BEGIN ls /etc/yum.repos.d ==
CentOS-Base.repo
CentOS-Debuginfo.repo
CentOS-Media.repo
== END   ls /etc/yum.repos.d ==

== BEGIN cat /etc/yum.conf ==
[main]
cachedir=/var/cache/yum/$basearch/$releasever
keepcache=0
debuglevel=2
logfile=/var/log/yum.log
exactarch=1
obsoletes=1
gpgcheck=1
plugins=1
installonly_limit=5
bugtracker_url=http://bugs.centos.org/set_project.php?project_id=16&ref=http://bugs.centos.org/bug_report_page.php?category=yum
distroverpkg=centos-release

#  This is the default, if you make this bigger yum won't see if the metadata
# is newer on the remote and so you'll "gain" the bandwidth of not having to
# download the new metadata and "pay" for it by yum not having correct
# information.
#  It is esp. important, to have correct metadata, for distributions like
# Fedora which don't keep old packages around. If you don't like this checking
# interupting your command line usage, it's much better to have something
# manually check the metadata once an hour (yum-updatesd will do this).
# metadata_expire=90m

# PUT YOUR REPOS HERE OR IN separate files named file.repo
# in /etc/yum.repos.d
== END   cat /etc/yum.conf ==

== BEGIN yum repolist all ==
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
 * base: centos.mirror.nac.net
 * extras: mirror.trouble-free.net
 * updates: mirror.ash.fastserv.com
repo id                     repo name                             status
base                        CentOS-6 - Base                       enabled: 6,294
c6-media                    CentOS-6 - Media                      disabled
centosplus                  CentOS-6 - Plus                       disabled
contrib                     CentOS-6 - Contrib                    disabled
debug                       CentOS-6 - Debuginfo                  disabled
extras                      CentOS-6 - Extras                     enabled:     4
updates                     CentOS-6 - Updates                    enabled:   338
repolist: 6,636
== END   yum repolist all ==

== BEGIN egrep 'include|exclude' /etc/yum.repos.d/*.repo ==
== END   egrep 'include|exclude' /etc/yum.repos.d/*.repo ==

== BEGIN sed -n -e "/^\[/h; /priority *=/{ G; s/\n/ /; s/ity=/ity = /; p }" /etc/yum.repos.d/*.repo | sort -k3n ==
== END   sed -n -e "/^\[/h; /priority *=/{ G; s/\n/ /; s/ity=/ity = /; p }" /etc/yum.repos.d/*.repo | sort -k3n ==

== BEGIN cat /etc/fstab ==

#
# /etc/fstab
# Created by anaconda on Thu Jan  5 21:15:57 2012
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/vg_trident-lv_root /                       ext4    defaults        1 1
UUID=97ac815c-b704-48d0-98ad-abd6cb59869e /boot                   ext4    defaults        1 2
/dev/mapper/vg_trident-lv_home /home                   ext4    defaults        1 2
/dev/mapper/vg_trident-lv_swap swap                    swap    defaults        0 0
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
== END   cat /etc/fstab ==

== BEGIN df -h ==
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_trident-lv_root
                       50G  3.8G   43G   9% /
tmpfs                  16G     0   16G   0% /dev/shm
/dev/sda1             485M   59M  401M  13% /boot
/dev/mapper/vg_trident-lv_home
                       52G  244M   49G   1% /home
== END   df -h ==

== BEGIN fdisk -l ==
Disk /dev/mapper/vg_trident-lv_root doesn't contain a valid partition table
Disk /dev/mapper/vg_trident-lv_swap doesn't contain a valid partition table
Disk /dev/sdc doesn't contain a valid partition table
Disk /dev/mapper/vg_trident-lv_home doesn't contain a valid partition table

Disk /dev/sda: 146.2 GB, 146163105792 bytes
255 heads, 63 sectors/track, 17769 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00078c46

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          64      512000   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              64       17770   142224384   8e  Linux LVM

Disk /dev/mapper/vg_trident-lv_root: 53.7 GB, 53687091200 bytes
255 heads, 63 sectors/track, 6527 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/mapper/vg_trident-lv_swap: 36.0 GB, 35953573888 bytes
255 heads, 63 sectors/track, 4371 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/sdc: 16 MB, 16777216 bytes
1 heads, 32 sectors/track, 1024 cylinders
Units = cylinders of 32 * 512 = 16384 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xffffffff


Disk /dev/mapper/vg_trident-lv_home: 56.0 GB, 55993958400 bytes
255 heads, 63 sectors/track, 6807 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

== END   fdisk -l ==

== BEGIN blkid ==
/dev/sda1: UUID="97ac815c-b704-48d0-98ad-abd6cb59869e" TYPE="ext4"
/dev/sda2: UUID="IaGf06-hx2c-pfVK-8Hoz-sl3e-GCVT-W5Y3nT" TYPE="LVM2_member"
/dev/mapper/vg_trident-lv_root: UUID="04c6a10c-da5a-423e-a507-9b314a1daa6f" TYPE="ext4"
/dev/mapper/vg_trident-lv_swap: UUID="13468d38-50a1-44c2-8c30-79a25319977b" TYPE="swap"
/dev/mapper/vg_trident-lv_home: UUID="b135e201-b9a9-412f-a401-8faf1420c060" TYPE="ext4"
== END   blkid ==

== BEGIN cat /proc/mdstat ==
Personalities :
unused devices: <none>
== END   cat /proc/mdstat ==

== BEGIN pvs ==
  PV         VG         Fmt  Attr PSize   PFree
  /dev/sda2  vg_trident lvm2 a--  135.63g    0
== END   pvs ==

== BEGIN vgs ==
  VG         #PV #LV #SN Attr   VSize   VFree
  vg_trident   1   3   0 wz--n- 135.63g    0
== END   vgs ==

== BEGIN lvs ==
  LV      VG         Attr   LSize  Origin Snap%  Move Log Copy%  Convert
  lv_home vg_trident -wi-ao 52.15g                                     
  lv_root vg_trident -wi-ao 50.00g                                     
  lv_swap vg_trident -wi-ao 33.48g                                     
== END   lvs ==

== BEGIN rpm -qa kernel\* | sort ==
kernel-2.6.32-220.4.1.el6.x86_64
kernel-2.6.32-220.el6.x86_64
kernel-devel-2.6.32-220.4.1.el6.x86_64
kernel-firmware-2.6.32-220.4.1.el6.noarch
kernel-headers-2.6.32-220.4.1.el6.x86_64
== END   rpm -qa kernel\* | sort ==

== BEGIN lspci -nn ==
00:00.0 Host bridge [0600]: Intel Corporation 5000X Chipset Memory Controller Hub [8086:25c0] (rev 12)
00:02.0 PCI bridge [0604]: Intel Corporation 5000 Series Chipset PCI Express x4 Port 2 [8086:25e2] (rev 12)
00:03.0 PCI bridge [0604]: Intel Corporation 5000 Series Chipset PCI Express x4 Port 3 [8086:25e3] (rev 12)
00:04.0 PCI bridge [0604]: Intel Corporation 5000 Series Chipset PCI Express x8 Port 4-5 [8086:25f8] (rev 12)
00:05.0 PCI bridge [0604]: Intel Corporation 5000 Series Chipset PCI Express x4 Port 5 [8086:25e5] (rev 12)
00:06.0 PCI bridge [0604]: Intel Corporation 5000 Series Chipset PCI Express x8 Port 6-7 [8086:25f9] (rev 12)
00:07.0 PCI bridge [0604]: Intel Corporation 5000 Series Chipset PCI Express x4 Port 7 [8086:25e7] (rev 12)
00:08.0 System peripheral [0880]: Intel Corporation 5000 Series Chipset DMA Engine [8086:1a38] (rev 12)
00:10.0 Host bridge [0600]: Intel Corporation 5000 Series Chipset FSB Registers [8086:25f0] (rev 12)
00:10.1 Host bridge [0600]: Intel Corporation 5000 Series Chipset FSB Registers [8086:25f0] (rev 12)
00:10.2 Host bridge [0600]: Intel Corporation 5000 Series Chipset FSB Registers [8086:25f0] (rev 12)
00:11.0 Host bridge [0600]: Intel Corporation 5000 Series Chipset Reserved Registers [8086:25f1] (rev 12)
00:13.0 Host bridge [0600]: Intel Corporation 5000 Series Chipset Reserved Registers [8086:25f3] (rev 12)
00:15.0 Host bridge [0600]: Intel Corporation 5000 Series Chipset FBD Registers [8086:25f5] (rev 12)
00:16.0 Host bridge [0600]: Intel Corporation 5000 Series Chipset FBD Registers [8086:25f6] (rev 12)
00:1c.0 PCI bridge [0604]: Intel Corporation 631xESB/632xESB/3100 Chipset PCI Express Root Port 1 [8086:2690] (rev 09)
00:1d.0 USB controller [0c03]: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #1 [8086:2688] (rev 09)
00:1d.1 USB controller [0c03]: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #2 [8086:2689] (rev 09)
00:1d.2 USB controller [0c03]: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #3 [8086:268a] (rev 09)
00:1d.7 USB controller [0c03]: Intel Corporation 631xESB/632xESB/3100 Chipset EHCI USB2 Controller [8086:268c] (rev 09)
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev d9)
00:1f.0 ISA bridge [0601]: Intel Corporation 631xESB/632xESB/3100 Chipset LPC Interface Controller [8086:2670] (rev 09)
00:1f.1 IDE interface [0101]: Intel Corporation 631xESB/632xESB IDE Controller [8086:269e] (rev 09)
01:00.0 PCI bridge [0604]: Intel Corporation 80333 Segment-A PCI Express-to-PCI Express Bridge [8086:0370]
01:00.2 PCI bridge [0604]: Intel Corporation 80333 Segment-B PCI Express-to-PCI Express Bridge [8086:0372]
02:0e.0 RAID bus controller [0104]: Dell PowerEdge Expandable RAID controller 5 [1028:0015]
04:00.0 PCI bridge [0604]: Broadcom EPB PCI-Express to PCI-X Bridge [1166:0103] (rev c3)
05:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet [14e4:164c] (rev 12)
06:00.0 PCI bridge [0604]: Intel Corporation 6311ESB/6321ESB PCI Express Upstream Port [8086:3500] (rev 01)
06:00.3 PCI bridge [0604]: Intel Corporation 6311ESB/6321ESB PCI Express to PCI-X Bridge [8086:350c] (rev 01)
07:00.0 PCI bridge [0604]: Intel Corporation 6311ESB/6321ESB PCI Express Downstream Port E1 [8086:3510] (rev 01)
07:01.0 PCI bridge [0604]: Intel Corporation 6311ESB/6321ESB PCI Express Downstream Port E2 [8086:3514] (rev 01)
08:00.0 PCI bridge [0604]: Broadcom EPB PCI-Express to PCI-X Bridge [1166:0103] (rev c3)
09:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet [14e4:164c] (rev 12)
10:0d.0 VGA compatible controller [0300]: ATI Technologies Inc ES1000 [1002:515e] (rev 02)
== END   lspci -nn ==

== BEGIN lsusb ==
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 413c:a001 Dell Computer Corp. Hub
Bus 001 Device 003: ID 04b4:6560 Cypress Semiconductor Corp. CY7C65640 USB-2.0 "TetraHub"
Bus 001 Device 004: ID 413c:0000 Dell Computer Corp. DRAC 5 Virtual Keyboard and Mouse
Bus 001 Device 005: ID 413c:0001 Dell Computer Corp. DRAC 5 Virtual Media
== END   lsusb ==

== BEGIN rpm -qa kmod\* kmdl\* ==
== END   rpm -qa kmod\* kmdl\* ==
[Moderator edit: Added code tags to preserve formatting.]
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Re: Mysteriously Slow Performance - running CentOS 6.2

Postby TrevorH » 2012/02/14 10:00:28

The server in question is in a remote place, however I've installed CentOS 6.2 on a local server to try and reproduce the problem. The server has a minimal install without a GUI. I ran the Java benchmark "avrora" from the "DaCapo" library "http://dacapobench.org/" The result was that it took ~1000 seconds to complete.

Next I reinstalled CentOS 6.2 with the development workstation option(on the same server), and loaded into the GUI. Now the same benchmark runs in 12 seconds, which is a perfectable great time!


Since it sounds like the major difference here is the lack of or presence of the GUI, have you tried running your benchmark on the same machine where it currently runs in 12 seconds but booted in runlevel 3 (command line)? I'd suspect that your benchmark is trying to open a GUI window and timing out - probably more than once to get to 1000 seconds. If the workstation runs it in another extended time and the only difference is GUI vs CLI mode then that's the most likely explanation. At this point it becomes a benchmark configuration problem and you need to ask the DaCapo people about it.
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Re: Mysteriously Slow Performance - running CentOS 6.2

Postby zebrastripe » 2012/02/14 16:22:33

Hello, and thanks for your response :)

Just to quickly follow up, I have just tried this booting to run level 3, and the new install still takes 12 seconds to complete the benchmark(runs fast).
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Re: Mysteriously Slow Performance - running CentOS 6.2

Postby pschaff » 2012/02/14 16:23:38

zebrastripe wrote:
...
At the end is the output of get_info.sh.
...
== BEGIN rpm -qa kmod\* kmdl\* ==
== END rpm -qa kmod\* kmdl\* ==

It may or may not be relevant to the current discussion, but your script output omitted all the network information as well as the final code tag.
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Re: Mysteriously Slow Performance - running CentOS 6.2

Postby zebrastripe » 2012/02/14 16:49:52

My apologies. Here is the omitted output:

Code: Select all

== BEGIN rpm -qa kmod\* kmdl\* ==
== END   rpm -qa kmod\* kmdl\* ==

== BEGIN ifconfig -a ==
eth0      Link encap:Ethernet  HWaddr 00:19:B9:F2:B2:68 
          inet addr:xxx.xxxx.xxxx.xxxx  Bcast:xxxx.xxxx.xxxx.xxxx  Mask:xxxx.xxxx.xxxx.xxxx
          inet6 addr: fe80::219:b9ff:fef2:b268/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:26802 errors:0 dropped:0 overruns:0 frame:0
          TX packets:7642 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:31314168 (29.8 MiB)  TX bytes:1223559 (1.1 MiB)
          Interrupt:16 Memory:f8000000-f8012800

eth1      Link encap:Ethernet  HWaddr 00:19:B9:F2:B2:6A 
          inet6 addr: fe80::219:b9ff:fef2:b26a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:492 (492.0 b)
          Interrupt:16 Memory:f4000000-f4012800

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:174 errors:0 dropped:0 overruns:0 frame:0
          TX packets:174 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:33049 (32.2 KiB)  TX bytes:33049 (32.2 KiB)

== END   ifconfig -a ==

== BEGIN brctl show ==
bridge name   bridge id      STP enabled   interfaces
== END   brctl show ==

== BEGIN route -n ==
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
xxx.xxx.xxx      0.0.0.0         255.255.255.240 U     0      0        0 eth0
xxx.xxx.xxx     0.0.0.0         255.255.0.0     U     1002   0        0 eth0
0.0.0.0         xxx.xxx.xxx      0.0.0.0         UG    0      0        0 eth0
== END   route -n ==

== BEGIN cat /etc/resolv.conf ==
# Generated by NetworkManager
search localdomain
nameserver xxx.xxx.xxx
nameserver xxx.xxx.xxx
== END   cat /etc/resolv.conf ==

== BEGIN grep net /etc/nsswitch.conf ==
#networks:   nisplus [NOTFOUND=return] files
#netmasks:   nisplus [NOTFOUND=return] files     
netmasks:   files
networks:   files
netgroup:   nisplus
== END   grep net /etc/nsswitch.conf ==

== BEGIN chkconfig --list | grep -Ei 'network|wpa' ==
NetworkManager    0:off   1:off   2:on   3:on   4:on   5:on   6:off
matahari-network   0:off   1:off   2:off   3:off   4:off   5:off   6:off
network           0:off   1:off   2:on   3:on   4:on   5:on   6:off
wpa_supplicant    0:off   1:off   2:off   3:off   4:off   5:off   6:off
== END   chkconfig --list | grep -Ei 'network|wpa' ==


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Posts: 6
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Re: Mysteriously Slow Performance - running CentOS 6.2

Postby zebrastripe » 2012/02/14 18:43:07

Adding a little more information:

I ran many more tests using the Phoronix testing suite: http://www.phoronix.com/scan.php?page=home

http://www.phoronix.com/scan.php?page=home

The server runs as expected(fast). The benchmarks test various hardware things like CPU/RAM/DISK. Please note that these benchmarks are not in Java.

However, every DaCapo benchmark I have run, as well as a few of my apps(which are all in Java) run anywhere between ~1/5-1/60 as fast as they should.

I have tried a few different JREs, so I don't think that is the problem.

Does anyone know of a place that documents the configuration differences between different types of CentOS installs?

Thanks again for your time!
zebrastripe
 
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Re: Mysteriously Slow Performance - running CentOS 6.2

Postby pschaff » 2012/02/14 18:51:41

zebrastripe wrote:
...
Does anyone know of a place that documents the configuration differences between different types of CentOS installs?

The upstream docs plus the CentOS Release Notes - but I doubt there is any simple and direct answer to what you seem to be looking for.
pschaff
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Re: Mysteriously Slow Performance - running CentOS 6.2

Postby zebrastripe » 2012/02/16 04:57:53

Thanks for the release notes link. I went through them but couldn't find a section that describes what configuration and packages goes into the different install types. Although there was a lot of good info there.

Have been continuing to delve into this issue. Wanted to add one more interesting tidbit. I attached an strace to one of the benchmarks, and it appears that something called futex is taking up 99.06% of the time, and the average time per call is over 10 times slower(891 microseconds vs 74 microseconds) on the minimal install compared to the full install.

Not sure if this is relevant, but figured it was worth a shot.
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