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Posted to jetspeed-user@portals.apache.org by Shan Gopalakrishnan <sg...@cisco.com> on 2002/07/20 20:02:39 UTC
high CPU utilization
Hello folks
Our team did a quick poc application in jetspeed and did a load test thru'
load runner.
Below is the configuration of the Solaris box. We had just that jetspeed
application running in that box while
doing the load test. We used Tomcat 4.0.3 as the servlet engine.
System Configuration: Sun Microsystems sun4u Sun Enterprise 220R (2 X
UltraSPARC-II 450MHz)
System clock frequency: 113 MHz
Memory size: 2048 Megabytes
========================= CPUs =========================
Run Ecache CPU CPU
Brd CPU Module MHz MB Impl. Mask
--- --- ------- ----- ------ ------ ----
0 0 0 450 4.0 US-II 10.0
0 2 2 450 4.0 US-II 10.0
========================= IO Cards =========================
Bus Freq
Brd Type MHz Slot Name Model
--- ---- ---- ---------- --------------------------------
----------------------
0 PCI 33 On-Board network-SUNW,hme
0 PCI 33 On-Board scsi-glm/disk (block) Symbios,53C875
0 PCI 33 On-Board scsi-glm/disk (block) Symbios,53C875
The results came out to be as follows :
For 80 concurrent users with ( zero sleep time ) the % CPU utilization
was 85% in the box where jetspeed was running
For 150 simultaneous users ( with 30 seconds sleep time ) the % CPU
utilization was around 78% or so in the box where jetspeed was running. As
we spiked the value the performance was going down . The initial response
time is expected to return within 5 to 6 seconds .
But during the peak load the response was going down enormously.
We observed the middle-tier and the database back-end was stable and showed
less than 10% CPU utilization.
We also used OptimizeIt to track down where the % CPU increases and
observed some of the jetspeed framework calls
are pretty high cpu intensive. Any opinions on this.?
- Shan
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RE: high CPU utilization
Posted by David Sean Taylor <da...@bluesunrise.com>.
> We also used OptimizeIt to track down where the % CPU increases and
> observed some of the jetspeed framework calls
> are pretty high cpu intensive. Any opinions on this.?
Shan,
Would it possible for you to share with us the OptimizeIt reports?
David
> -----Original Message-----
> From: Shan Gopalakrishnan [mailto:sgopalak@cisco.com]
> Sent: Saturday, July 20, 2002 11:03 AM
> To: Jetspeed Users List
> Subject: high CPU utilization
> Importance: High
>
>
> Hello folks
>
> Our team did a quick poc application in jetspeed and did a load
> test thru'
> load runner.
> Below is the configuration of the Solaris box. We had just that
> jetspeed
> application running in that box while
> doing the load test. We used Tomcat 4.0.3 as the servlet engine.
>
> System Configuration: Sun Microsystems sun4u Sun Enterprise 220R (2 X
> UltraSPARC-II 450MHz)
> System clock frequency: 113 MHz
> Memory size: 2048 Megabytes
> ========================= CPUs =========================
> Run Ecache CPU CPU
> Brd CPU Module MHz MB Impl. Mask
> --- --- ------- ----- ------ ------ ----
> 0 0 0 450 4.0 US-II 10.0
> 0 2 2 450 4.0 US-II 10.0
> ========================= IO Cards =========================
> Bus Freq
> Brd Type MHz Slot Name Model
> --- ---- ---- ---------- --------------------------------
> ----------------------
> 0 PCI 33 On-Board network-SUNW,hme
> 0 PCI 33 On-Board scsi-glm/disk (block)
> Symbios,53C875
> 0 PCI 33 On-Board scsi-glm/disk (block)
> Symbios,53C875
>
>
> The results came out to be as follows :
>
> For 80 concurrent users with ( zero sleep time ) the % CPU utilization
> was 85% in the box where jetspeed was running
> For 150 simultaneous users ( with 30 seconds sleep time ) the % CPU
> utilization was around 78% or so in the box where jetspeed was
> running. As
> we spiked the value the performance was going down . The initial response
> time is expected to return within 5 to 6 seconds .
> But during the peak load the response was going down enormously.
>
> We observed the middle-tier and the database back-end was stable
> and showed
> less than 10% CPU utilization.
>
> We also used OptimizeIt to track down where the % CPU increases and
> observed some of the jetspeed framework calls
> are pretty high cpu intensive. Any opinions on this.?
>
> - Shan
>
>
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> To unsubscribe, e-mail:
<ma...@jakarta.apache.org>
For additional commands, e-mail:
<ma...@jakarta.apache.org>
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