[FUG-BR] Alto consumo de CPU do squid no FreeBSD 5.4
Nilton Jose Rizzo
rizzo em larry.lin.ufrj.br
Qua Abr 6 16:43:59 BRT 2005
>
> Saudações,
>
Uma ideia, porque nao coloca os HD um em cada ID, a perfomance
aumenta um pouco ... Pos o squid usa disco tbm
Rizzo
>
> Alguém tem sugestões ou dicas para resolver o problema de alto consumo
> de CPU pelo squid no FreeBSD 5.4?
> Trata-se de um proxy webcache transparente, implementado com o pf e
> protocolo WCCP (Cisco).
>
> Dados relevantes:
>
> Hardware: P4 2.80GHz HT / 2GB RAM / (2x)80GB HDD / Intel PRO/1000 (em0)
> ----------------------
> CPU: Intel(R) Pentium(R) 4 CPU 2.80GHz (2793.01-MHz 686-class CPU)
> Hyperthreading: 2 logical CPUs
> real memory = 2146631680 (2047 MB)
> avail memory = 2094350336 (1997 MB)
> cpu0: <ACPI CPU> on acpi0
> agp0: <Intel 82865 host to AGP bridge> mem 0xf8000000-0xfbffffff at
> device 0.0 on pci0
> em0: <Intel(R) PRO/1000 Network Connection, Version - 1.7.35> port
> 0xcf80-0xcf9f mem
> 0xfe9e0000-0xfe9fffff irq 18 at device 1.0 on pci2
> em0: Link is up 100 Mbps Full Duplex
> ad0: 76319MB <ST380011A/3.06> [155061/16/63] at ata0-master UDMA100
> ad1: 76319MB <ST380011A/3.06> [155061/16/63] at ata0-slave UDMA100
> -----------//----------------------//----------------------//-----------
>
>
> Software: FreeBSD 5.4-PRERELEASE, squid 2.5.9, pf
>
> Outras informações:
> ------------------
>
> # top -S
> --------
> last pid: 20950; load averages: 0.88, 0.99, 0.96 up 1+01:36:07
> 12:11:52
> 101 processes: 3 running, 65 sleeping, 33 waiting
> CPU states: 34.5% user, 0.0% nice, 51.6% system, 7.0% interrupt, 7.0%
> idle
> Mem: 210M Active, 1544M Inact, 180M Wired, 66M Cache, 112M Buf, 3008K Free
> Swap: 4069M Total, 120K Used, 4069M Free
>
> PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND
> 3134 squid 122 0 193M 190M RUN 211:17 84.03% 84.03% squid
> 11 root 171 52 0K 8K RUN 934:47 6.98% 6.98% idle
> 35 root -44 -163 0K 8K WAIT 26:04 2.83% 2.83% swi1: net
> 28 root -68 -187 0K 8K WAIT 14:05 1.03% 1.03% irq18:
> em0 uhci2
> 36 root -28 -147 0K 8K WAIT 2:24 0.00% 0.00% swi5:
> clock sio
> 3136 squid -4 0 1744K 1076K msgwai 2:07 0.00% 0.00% diskd
> 56 root 20 0 0K 8K syncer 2:00 0.00% 0.00% syncer
> -----------//----------------------//----------------------//-----------
>
> # systat -vmstat 1
> ------------------
> 3 users Load 1.15 1.00 0.95 Apr 6 12:18
>
> Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER
> Tot Share Tot Share Free in out in out
> Act 209444 4416 261896 6540 82364 count
> All 2045952 7132 4500392 10168 pages
> Interrupts
> Proc:r p d s w Csw Trp Sys Int Sof Flt cow 1515 total
> 1 4 32 3680 730 5051 2944 1139 183612 wire 1:
> atkb
> 215036 act 3:
> sio1
> 52.2%Sys 3.7%Intr 28.4%User 0.0%Nice 15.7%Idl 1569204 inact 4:
> sio0
> | | | | | | | | | | 79356 cache 6:
> fdc0
> ==========================++>>>>>>>>>>>>>> 3008 free 128 8: rtc
> daefr
> 13: npx
> Namei Name-cache Dir-cache prcfr
> 14: ata
> Calls hits % hits % react
> 15: ata
> 47 37 79 pdwak 1288
> 18: em0
> zfod pdpgs 99 0: clk
> Disks ad0 ad1 ofod intrn
> KB/t 0.00 0.00 %slo-z 114880 buf
> tps 0 0 1657 tfree 120 dirtybuf
> MB/s 0.00 0.00 100000 desiredvnodes
> % busy 0 0 90535 numvnodes
> 9789 freevnodes
> -----------//----------------------//----------------------//-----------
>
> # netstat -mb
> -------------
> 1188 mbufs in use
> 1161/32768 mbuf clusters in use (current/max)
> 0/3/4608 sfbufs in use (current/peak/max)
> 2619 KBytes allocated to network
> 0 requests for sfbufs denied
> 0 requests for sfbufs delayed
> 0 requests for I/O initiated by sendfile
> 214 calls to protocol drain routines
> -----------//----------------------//-----------
>
> # vmstat -i
> -----------
> interrupt total rate
> irq1: atkbd0 2129 0
> irq3: sio1 2 0
> irq4: sio0 2 0
> irq6: fdc0 14 0
> irq8: rtc 11852670 127
> irq13: npx0 1 0
> irq14: ata0 1145295 12
> irq15: ata1 58 0
> irq18: em0 uhci2 75076124 810
> irq0: clk 9260481 99
> Total 97336776 1051
> -----------//----------------------//-----------
>
> # iostat
> --------
> tty ad0 ad1 cpu
> tin tout KB/t tps MB/s KB/t tps MB/s us ni sy in id
> 0 196 15.53 4 0.06 18.19 8 0.14 15 0 22 3 61
> -----------//----------------------//-----------
>
>
> Obrigado antecipadamente,
>
> Alex
>
>
>
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