Hi
When an HTTP request for a (large) file is made directly to httpd, the
transfer speed is what's expected from the infrastructure: a 92Mb file
is transferred in under a second. However, when relayd is placed in
front of httpd (running on the same host), the transfer rate drops to
about 200 kB/s. Is this expected?
I can easily reproduce this with a relayd.conf as simple as:
table <internal> { 127.0.0.1 }
http protocol "http_revproxy" {
return error
match forward to <internal>
pass
}
relay "http_revproxy" {
listen on 10.17.18.10 port 80
protocol "http_revproxy"
forward to <internal> port 80
}
(Side note: I am well aware that with this configuration it is pointless
to run relayd. The actual configuration being used has more match and
pass rules on the protocol section, and forwarding to other ports.
However, the config above is enough to reproduce the issue.)
To confuse things a bit, the speed drop only happens when the request
comes from a host other than the server. Things flow normally when the
request comes from the machine serving the files (still directed at the
ip:port where relayd listens on, obviously).
Further info:
- This is on amd64-stable (7.6), dmesg below
- The machine is a bit old, but systat during the transfer shows nothing
suspicious, AFAICT: CPU is about 90% idle during the transfer, plenty
of free memory
- pf is disabled,
- The hosts making the requests are on the same subnet as the server,
with only a switch between both machines
- Again, requesting directly to httpd yields an appropriate transfer
speed, as does using SCP or NFS
I know there have been some changes in the forwarding of Content-Length
headers in relayd, but that was pre-7.6. Any clue as to what may be
going on?
Thanks in advance
--
OpenBSD 7.6 (GENERIC.MP) #338: Mon Sep 30 08:55:35 MDT 2024
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 6391660544 (6095MB)
avail mem = 6174715904 (5888MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.6 @ 0xfb330 (35 entries)
bios0: vendor HP version "O41" date 10/01/2013
bios0: HP ProLiant MicroServer
acpi0 at bios0: ACPI 3.0
acpi0: sleep states S0 S4 S5
acpi0: tables DSDT FACP APIC MCFG SPMI OEMB HPET EINJ BERT ERST HEST SSDT
acpi0: wakeup devices PCE2(S4) PCE3(S4) PCE4(S4) PCE5(S4) PCE6(S4) PCE7(S4)
PCE9(S4) PCEA(S4) PCEB(S4) PCEC(S4) SBAZ(S4) P0PC(S4) PE20(S4) PE21(S4)
PE22(S4) PE23(S4)
acpitimer0 at acpi0: 3579545 Hz, 32 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: AMD Turion(tm) II Neo N40L Dual-Core Processor, 1497.76 MHz, 10-06-03,
patch 010000c8
cpu0: cpuid 1
edx=178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT>
ecx=802009<SSE3,MWAIT,CX16,POPCNT>
cpu0: cpuid 80000001
edx=efd3fbff<NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,3DNOW2,3DNOW>
ecx=837ff<LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,NODEID>
cpu0: cpuid 80000007 edx=1f9<HWPSTATE,ITSC>
cpu0: 64KB 64b/line 2-way D-cache, 64KB 64b/line 2-way I-cache
cpu0: 1MB 64b/line 16-way L2 cache
cpu0: smt 0, core 0, package 0
cpu0: AMD erratum 721 detected and fixed
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 199MHz
cpu0: mwait min=64, max=64, IBE
cpu1 at mainbus0: apid 1 (application processor)
cpu1: AMD Turion(tm) II Neo N40L Dual-Core Processor, 1497.62 MHz, 10-06-03,
patch 010000c8
cpu1: smt 0, core 1, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 21, 24 pins
acpimcfg0 at acpi0
acpimcfg0: addr 0xe0000000, bus 0-255
acpihpet0 at acpi0: 14318180 Hz
acpi0: unable to load \\_SB_._INI.EXH2
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (P0P1)
acpiprt2 at acpi0: bus -1 (PCE2)
acpiprt3 at acpi0: bus -1 (PCE4)
acpiprt4 at acpi0: bus 2 (PCE6)
acpipci0 at acpi0 PCI0: 0x00000010 0x00000011 0x00000000
acpicmos0 at acpi0
acpibtn0 at acpi0: PWRB
acpicpu0 at acpi0: C1(@1 halt!), PSS
acpicpu1 at acpi0: C1(@1 halt!), PSS
ipmi at mainbus0 not configured
cpu0: 1497 MHz: speeds: 1500 1300 1000 800 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "AMD RS880 Host" rev 0x00
ppb0 at pci0 dev 1 function 0 vendor "Hewlett-Packard", unknown product 0x9602
rev 0x00
pci1 at ppb0 bus 1
radeondrm0 at pci1 dev 5 function 0 "ATI Mobility Radeon HD 4200" rev 0x00
drm0 at radeondrm0
radeondrm0: apic 2 int 18
ppb1 at pci0 dev 6 function 0 "AMD RS780 PCIE" rev 0x00
pci2 at ppb1 bus 2
bge0 at pci2 dev 0 function 0 "Broadcom BCM5723" rev 0x10, BCM5784 A1
(0x5784100): msi, address a0:b3:cc:eb:0f:2a
brgphy0 at bge0 phy 1: BCM5784, rev. 4
ahci0 at pci0 dev 17 function 0 "ATI SBx00 SATA" rev 0x40: apic 2 int 19, AHCI
1.2
ahci0: port 0: 3.0Gb/s
ahci0: port 1: 3.0Gb/s
ahci0: port 2: 3.0Gb/s
ahci0: port 3: 3.0Gb/s
ahci0: port 4: 1.5Gb/s
ahci0: port 5: 3.0Gb/s
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, VB0250EAVER, HPG7> naa.5000c5004defbb82
sd0: 238475MB, 512 bytes/sector, 488397168 sectors
sd1 at scsibus1 targ 1 lun 0: <ATA, WDC WD40EFAX-68J, 82.0> naa.50014ee212e0faf4
sd1: 3815447MB, 512 bytes/sector, 7814037168 sectors, thin
sd2 at scsibus1 targ 2 lun 0: <ATA, WDC WD40EFAX-68J, 82.0> naa.50014ee212e0faef
sd2: 3815447MB, 512 bytes/sector, 7814037168 sectors, thin
sd3 at scsibus1 targ 3 lun 0: <ATA, WDC WD10EFRX-68F, 82.0> naa.50014ee265b87652
sd3: 953869MB, 512 bytes/sector, 1953525168 sectors
sd4 at scsibus1 targ 4 lun 0: <ATA, SAMSUNG HM080HI, AB10>
t10.ATA_SAMSUNG_HM080HI_S0KGJ10P134018
sd4: 76319MB, 512 bytes/sector, 156301488 sectors
sd5 at scsibus1 targ 5 lun 0: <ATA, WDC WD40EFAX-68J, 82.0> naa.50014ee2bd8c2de1
sd5: 3815447MB, 512 bytes/sector, 7814037168 sectors, thin
ohci0 at pci0 dev 18 function 0 "ATI SB700 USB" rev 0x00: apic 2 int 18,
version 1.0, legacy support
ehci0 at pci0 dev 18 function 2 "ATI SB700 USB2" rev 0x00: apic 2 int 17
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 configuration 1 interface 0 "ATI EHCI root hub" rev 2.00/1.00
addr 1
ohci1 at pci0 dev 19 function 0 "ATI SB700 USB" rev 0x00: apic 2 int 18,
version 1.0, legacy support
ehci1 at pci0 dev 19 function 2 "ATI SB700 USB2" rev 0x00: apic 2 int 17
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 configuration 1 interface 0 "ATI EHCI root hub" rev 2.00/1.00
addr 1
piixpm0 at pci0 dev 20 function 0 "ATI SBx00 SMBus" rev 0x42: SMI
iic0 at piixpm0
sdtemp0 at iic0 addr 0x18: mcp98243
sdtemp1 at iic0 addr 0x19: mcp98243
spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM ECC PC3-10600 with thermal sensor
spdmem1 at iic0 addr 0x51: 2GB DDR3 SDRAM ECC PC3-10600 with thermal sensor
pcib0 at pci0 dev 20 function 3 "ATI SB700 ISA" rev 0x40
ppb2 at pci0 dev 20 function 4 "ATI SB600 PCI" rev 0x40
pci3 at ppb2 bus 3
ohci2 at pci0 dev 22 function 0 "ATI SB700 USB" rev 0x00: apic 2 int 18,
version 1.0, legacy support
ehci2 at pci0 dev 22 function 2 "ATI SB700 USB2" rev 0x00: apic 2 int 17
usb2 at ehci2: USB revision 2.0
uhub2 at usb2 configuration 1 interface 0 "ATI EHCI root hub" rev 2.00/1.00
addr 1
pchb1 at pci0 dev 24 function 0 "AMD 10h HyperTransport" rev 0x00
pchb2 at pci0 dev 24 function 1 "AMD 10h Address Map" rev 0x00
pchb3 at pci0 dev 24 function 2 "AMD 10h DRAM Cfg" rev 0x00
km0 at pci0 dev 24 function 3 "AMD 10h Misc Cfg" rev 0x00
pchb4 at pci0 dev 24 function 4 "AMD 10h Link Cfg" rev 0x00
usb3 at ohci0: USB revision 1.0
uhub3 at usb3 configuration 1 interface 0 "ATI OHCI root hub" rev 1.00/1.00
addr 1
usb4 at ohci1: USB revision 1.0
uhub4 at usb4 configuration 1 interface 0 "ATI OHCI root hub" rev 1.00/1.00
addr 1
isa0 at pcib0
isadma0 at isa0
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
usb5 at ohci2: USB revision 1.0
uhub5 at usb5 configuration 1 interface 0 "ATI OHCI root hub" rev 1.00/1.00
addr 1
vmm0 at mainbus0: SVM/RVI
uplcom0 at uhub3 port 3 configuration 1 interface 0 "Prolific Technology Inc.
USB-Serial Controller D" rev 1.10/3.00 addr 2
ucom0 at uplcom0: usb3.0.00003.0
uslcom0 at uhub3 port 4 configuration 1 interface 0 "ITead Sonoff Zigbee 3.0
USB Dongle Plus" rev 2.00/1.00 addr 3
ucom1 at uslcom0 portno 0: usb3.0.00004.0
ugen0 at uhub3 port 5 "American Power Conversion Smart-UPS 750 FW:UPS 09.4 /
ID=18" rev 2.00/1.06 addr 4
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on sd0a (77c919e96ceaf0e9.a) swap on sd0b dump on sd0b
radeondrm0: RS880
radeon_audio_component_init: stub
drm:pid0:drm_fb_helper_find_format *WARNING* [drm] bpp/depth value of 16/16 not
supported
drm:pid0:drm_fb_helper_find_format *WARNING* [drm] bpp/depth value of 16/16 not
supported
drm:pid0:__drm_fb_helper_find_sizes *WARNING* [drm] No compatible format found
radeondrm0: 1024x768, 32bpp
wsdisplay0 at radeondrm0 mux 1: console (std, vt100 emulation)
wsdisplay0: screen 1-5 added (std, vt100 emulation)
--
