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Problem on hpux 11 with sybase 12.0

touch_1
Occasional Contributor

Problem on hpux 11 with sybase 12.0

Hello,
Excuse my english.

Recently, someone (sybase expert), notice about the fact that async i/o can't be enable on hpux for standard file system. Only raw device can use async i/o.

Env : HPUX 11 (Stratus server)
Sybase 12.0.1

Concerning system parameter :
fs_async=0

sybase device were initialize with the desync option.

We can observe small io but very large contention on disk.

help me?
2 REPLIES
DIPAK KUMAR ROY
Frequent Advisor

Re: Problem on hpux 11 with sybase 12.0

I think ( not sure) this version of Sybase async i/o for filesystem. It supports only for raw device. Sybase 12.5 does support async i/o for both filesystem as well as raw devices.

Dipak
DIPAK KUMAR ROY
Frequent Advisor

Re: Problem on hpux 11 with sybase 12.0

Sorry for the typo....

I think ( not sure) this version of Sybase does not support async i/o for
filesystem. It supports only for raw device. Sybase 12.5 does support async i/o for both filesystem as well as raw devices.

Dipak