Re: [OpenSTA-users] Severe load ramp-up limitation encountered

[Dan D. <ddo...@me...>]

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> >Dan Downing wrote: =20
>>> The Test: Two load =20
>>> servers (dual 1Ghz P4s, 1 GB memory). On each, test had 20 Task =20
>>> Groups with this one script, in v-user "burst" =20
>>> groups of 50, 100, 150,...1000, doing a single iteration. Each group t=
o=A0=A0=20
>>> be launch 3 minutes apart =20
>>> (allowing the web server to settle from the previous burst). Ramp rat=
e=A0=A0=20
>>> of 300 users per minute (batch =20
>>> settings: 1/5/1 (interval btw =20
>>> batches/vusers per batch/batch ramp time). =20
> =20
>>Danny Faught wrote: =20
>>I'm curious if you tried to set up this scenario using a single task=A0=
=A0=20
>>group. I would guess >that if you could get what you want that way, it=A0=
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>>would put less stress on your load >generators. =20
>>--=A0=A0=20
>>Danny R. Faught =20
> =20
> Danny, Thanks for your suggestion. While I did not try modeling the=A0=A0=
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> *entire set* of Task Groups into a single Task Group, I *did* (just thi=
s=A0=A0=20
> morning) re-run *just one* Task Group with 400 users -- and managed to p=
eg=A0=A0=20
> the cpu and drive up the pages/sec. just the same. =20
> =20
> So, whatever resources I am taxing, it occurs even with a single Task=A0=
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> Group. =20
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Bernie wrote: =20
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 =20
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>I'm having a little trouble visualizing what is happening. Could=20
you reply with the VU >parameters (i.e. batch start options, total=20
number of users, number of vir users for timers=20
>and http result)=20
for the single task group test? =20
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 =20
>>A picture is worth a few hundred words (depreciation).=A0 See attached.=
 =20
 Hmmm...can't send an attachment!#@?=20
OK; verbal it is.=20
1 task group, 400 vusers; 5 vu per batch, 1 sec between batches, 1 second=
 batch ramp-up.=20
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=2E..Dan=20
 =20
Dan Downing=20
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 www.mentora.com=20
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