[Varnish] #38: Fault tree for performance diagnosis
Varnish
varnish-bugs at projects.linpro.no
Sun Aug 20 00:10:20 CEST 2006
#38: Fault tree for performance diagnosis
----------------------+-----------------------------------------------------
Reporter: phk | Owner: phk
Type: defect | Status: new
Priority: normal | Milestone:
Component: varnishd | Version:
Severity: normal | Keywords:
----------------------+-----------------------------------------------------
This is a fault tree we can work through to eliminate theories:
Lower than expected traffic handling
Alteon not allocating traffic
Packet loss
Packet delay
TCP/session setup failures or rejections
Bad Varnish responsetime
Alteon not allocating traffic
Bad health-check response time
Health-check failues
TCP/session setup failures or rejections
TCP/session count confusion
Bad Varnish responsetime
Bad health-check response time
Packet loss
Packet delay
TCP/session setup failures or rejections
Bad Varnish responsetime
Health-check failues
Packet loss
Packet delay
TCP/session setup failures or rejections
Packet loss
Alteon interface
GigE switch
bge1 interface
FreeBSD Network stack bugs
FreeBSD resource starvation
Packet delay
Alteon bugs
Alteon interface
GigE switch
bge1 interface
FreeBSD Network stack bugs
FreeBSD rate limiting
FreeBSD resource starvation
TCP/session setup failures or rejections
FreeBSD Network stack bugs
FreeBSD rate limiting
FreeBSD firewalling
FreeBSD routing
FreeBSD resource starvation
Varnish acceptor bugs
Varnish acceptor resource starvation
Bad Varnish responsetime
varnish acceptor bugs
varnish response bugs
varnish lock contention
varnish resource starvation
thread library schedule bugs
FreeBSD rate limiting
FreeBSD resource startvation (sendfile ?)
--
Ticket URL: <http://varnish.projects.linpro.no/ticket/38>
Varnish <http://varnish.projects.linpro.no/>
The Varnish HTTP Accelerator
More information about the varnish-bugs
mailing list