Ruby, Python programs are unusually slow

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Ruby, Python programs are unusually slow

Kaashif Hymabaccus-2
When I start Python and Ruby programs (and probably others too), they
are very, very slow to do anything and do not respond to SIGINT or
SIGTERM. For example, when I run "rackup" in an almost bare Rack project
(in Ruby), I have to wait for about 10 minutes before the web server
starts. The same is true when running "python2.7 -m SimpleHTTPServer",
which I'd expect to start serving almost immediately, but instead takes
10 minutes to show any sign of activity.

I know this isn't a problem with my hardware (a ThinkPad T61) being
slow, since it works fine on Debian and FreeBSD. Seeing as the problem
is worst with programs that access the network, maybe the problem has
something to do with that?

I'd hate to have to switch to another OS to do work. dmesg is below.

OpenBSD 5.5 (GENERIC.MP) #315: Wed Mar  5 09:37:46 MST 2014
    [hidden email]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 2087387136 (1990MB)
avail mem = 2023268352 (1929MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe0010 (73 entries)
bios0: vendor LENOVO version "7LET44WW (1.14 )" date 06/27/2007
bios0: LENOVO 765912G
acpi0 at bios0: rev 2
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP SSDT ECDT TCPA APIC MCFG HPET SLIC BOOT ASF! SSDT SSDT SSDT SSDT
acpi0: wakeup devices LID_(S3) SLPB(S3) LURT(S3) DURT(S3) IGBE(S4) EXP0(S4) EXP1(S4) EXP2(S4) EXP3(S4) EXP4(S4) PCI1(S4) USB0(S3) USB1(S3) USB2(S3) USB3(S3) USB4(S3) [...]
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpiec0 at acpi0
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM)2 Duo CPU T7300 @ 2.00GHz, 2194.88 MHz
cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,NXE,LONG,LAHF,PERF
cpu0: 4MB 64b/line 16-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 199MHz
cpu0: mwait min=64, max=64, C-substates=0.2.2.2.2, IBE
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM)2 Duo CPU T7300 @ 2.00GHz, 1995.01 MHz
cpu1: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,NXE,LONG,LAHF,PERF
cpu1: 4MB 64b/line 16-way L2 cache
cpu1: smt 0, core 1, package 0
ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 20, 24 pins
ioapic0: misconfigured as apic 2, remapped to apid 1
acpimcfg0 at acpi0 addr 0xf0000000, bus 0-63
acpihpet0 at acpi0: 14318179 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus -1 (AGP_)
acpiprt2 at acpi0: bus 2 (EXP0)
acpiprt3 at acpi0: bus 3 (EXP1)
acpiprt4 at acpi0: bus 4 (EXP2)
acpiprt5 at acpi0: bus 5 (EXP3)
acpiprt6 at acpi0: bus 13 (EXP4)
acpiprt7 at acpi0: bus 21 (PCI1)
acpicpu0 at acpi0: C3, C2, C1, PSS
acpicpu1 at acpi0: C3, C2, C1, PSS
acpipwrres0 at acpi0: PUBS, resource for USB0, USB2, USB4, EHC0, EHC1
acpitz0 at acpi0: critical temperature is 127 degC
acpitz1 at acpi0: critical temperature is 100 degC
acpibtn0 at acpi0: LID_
acpibtn1 at acpi0: SLPB
acpibat0 at acpi0: BAT0 model "42T5225" serial   160 type LION oem "Panasonic"
acpibat1 at acpi0: BAT1 not present
acpiac0 at acpi0: AC unit online
acpithinkpad0 at acpi0
acpidock0 at acpi0: GDCK not docked (0)
cpu0: Enhanced SpeedStep 2194 MHz: speeds: 2001, 2000, 1600, 1200, 800 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel GM965 Host" rev 0x0c
vga1 at pci0 dev 2 function 0 "Intel GM965 Video" rev 0x0c
intagp0 at vga1
agp0 at intagp0: aperture at 0xe0000000, size 0x10000000
inteldrm0 at vga1
drm0 at inteldrm0
inteldrm0: 1280x800
wsdisplay0 at vga1 mux 1: console (std, vt100 emulation)
wsdisplay0: screen 1-5 added (std, vt100 emulation)
"Intel GM965 Video" rev 0x0c at pci0 dev 2 function 1 not configured
em0 at pci0 dev 25 function 0 "Intel ICH8 IGP M AMT" rev 0x03: msi, address 00:15:58:c6:fd:70
uhci0 at pci0 dev 26 function 0 "Intel 82801H USB" rev 0x03: apic 1 int 20
uhci1 at pci0 dev 26 function 1 "Intel 82801H USB" rev 0x03: apic 1 int 21
ehci0 at pci0 dev 26 function 7 "Intel 82801H USB" rev 0x03: apic 1 int 22
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
azalia0 at pci0 dev 27 function 0 "Intel 82801H HD Audio" rev 0x03: msi
azalia0: codecs: Analog Devices AD1984, Conexant/0x2bfa, using Analog Devices AD1984
audio0 at azalia0
ppb0 at pci0 dev 28 function 0 "Intel 82801H PCIE" rev 0x03: msi
pci1 at ppb0 bus 2
ppb1 at pci0 dev 28 function 1 "Intel 82801H PCIE" rev 0x03: msi
pci2 at ppb1 bus 3
iwn0 at pci2 dev 0 function 0 "Intel Wireless WiFi Link 4965" rev 0x61: msi, MIMO 2T3R, MoW2, address 00:13:e8:73:04:85
ppb2 at pci0 dev 28 function 2 "Intel 82801H PCIE" rev 0x03: msi
pci3 at ppb2 bus 4
ppb3 at pci0 dev 28 function 3 "Intel 82801H PCIE" rev 0x03: msi
pci4 at ppb3 bus 5
ppb4 at pci0 dev 28 function 4 "Intel 82801H PCIE" rev 0x03: msi
pci5 at ppb4 bus 13
uhci2 at pci0 dev 29 function 0 "Intel 82801H USB" rev 0x03: apic 1 int 16
uhci3 at pci0 dev 29 function 1 "Intel 82801H USB" rev 0x03: apic 1 int 17
uhci4 at pci0 dev 29 function 2 "Intel 82801H USB" rev 0x03: apic 1 int 18
ehci1 at pci0 dev 29 function 7 "Intel 82801H USB" rev 0x03: apic 1 int 19
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb5 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0xf3
pci6 at ppb5 bus 21
cbb0 at pci6 dev 0 function 0 "Ricoh 5C476 CardBus" rev 0xba: apic 1 int 16
"Ricoh 5C832 Firewire" rev 0x04 at pci6 dev 0 function 1 not configured
cardslot0 at cbb0 slot 0 flags 0
cardbus0 at cardslot0: bus 22 device 0 cacheline 0x0, lattimer 0xb0
pcmcia0 at cardslot0
pcib0 at pci0 dev 31 function 0 "Intel 82801HEM LPC" rev 0x03
pciide0 at pci0 dev 31 function 1 "Intel 82801HBM IDE" rev 0x03: DMA, channel 0 configured to compatibility, channel 1 configured to compatibility
atapiscsi0 at pciide0 channel 0 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <MATSHITA, DVD/CDRW UJDA775, CB03> ATAPI 5/cdrom removable
cd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
pciide0: channel 1 ignored (disabled)
ahci0 at pci0 dev 31 function 2 "Intel 82801HBM AHCI" rev 0x03: msi, AHCI 1.1
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, Hitachi HTS54502, PB2O> SCSI3 0/direct fixed naa.5000cca5e7eb70a9
sd0: 238475MB, 512 bytes/sector, 488397168 sectors
ichiic0 at pci0 dev 31 function 3 "Intel 82801H SMBus" rev 0x03: apic 1 int 23
iic0 at ichiic0
usb2 at uhci0: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci1: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb4 at uhci2: USB revision 1.0
uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb5 at uhci3: USB revision 1.0
uhub5 at usb5 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb6 at uhci4: USB revision 1.0
uhub6 at usb6 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
wsmouse1 at pms0 mux 0
pms0: Synaptics touchpad, firmware 6.2
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
aps0 at isa0 port 0x1600/31
ugen0 at uhub2 port 1 "Broadcom Corp BCM2045B" rev 2.00/1.00 addr 2
ugen1 at uhub2 port 2 "STMicroelectronics Biometric Coprocessor" rev 1.00/0.01 addr 3
ugen2 at uhub5 port 2 "Lenovo Integrated Smart Card Reader" rev 2.00/1.00 addr 2
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on sd0a (cda24484548f6cdc.a) swap on sd0b dump on sd0b
ugen0 detached
ugen1 detached
ugen2 detached
ugen0 at uhub2 port 1 "Broadcom Corp BCM2045B" rev 2.00/1.00 addr 2
ugen1 at uhub2 port 2 "STMicroelectronics Biometric Coprocessor" rev 1.00/0.01 addr 3
ugen2 at uhub5 port 2 "Lenovo Integrated Smart Card Reader" rev 2.00/1.00 addr 2

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Re: Ruby, Python programs are unusually slow

Gregor Best
On Wed, Jun 11, 2014 at 05:52:12PM +0100, Kaashif Hymabaccus wrote:
> [...]
> I know this isn't a problem with my hardware (a ThinkPad T61) being
> slow,
> [...]

Definitely, my R61 starts a Python HTTP server almost instantly.

> Seeing as the problem
> is worst with programs that access the network, maybe the problem has
> something to do with that?
> [...]

Could be a problem with name resolution. Do you have an entry for your
hostname in /etc/hosts? How quick is name resolution in general, i.e.
via something like

        host localhost
        host `hostname -s`
        host openbsd.org

--
        Gregor Best

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Re: Ruby, Python programs are unusually slow

Kaashif Hymabaccus-2
On Wed, Jun 11, 2014 at 08:42:14PM +0200, Gregor Best wrote:

> On Wed, Jun 11, 2014 at 05:52:12PM +0100, Kaashif Hymabaccus wrote:
> > [...]
> > I know this isn't a problem with my hardware (a ThinkPad T61) being
> > slow,
> > [...]
>
> Definitely, my R61 starts a Python HTTP server almost instantly.
>
> > Seeing as the problem
> > is worst with programs that access the network, maybe the problem has
> > something to do with that?
> > [...]
>
> Could be a problem with name resolution. Do you have an entry for your
> hostname in /etc/hosts? How quick is name resolution in general, i.e.
> via something like
>
> host localhost
> host `hostname -s`
> host openbsd.org
>
> --
> Gregor Best

Localhost was taking a very, very long time (almost exactly the 10
minutes the web server was taking to start) to resolve for some reason,
so I changed the nameservers in /etc/resolv.conf and everything seems to
work fine.

I even upgraded to -current to see if it'd fix the problem!

I feel silly now, the problem was so obvious. Thanks.