[rescue] Solaris not stable till release 2.x?????? WAS::Re: [geeks] Rumors flying
Andrew M Hoerter
amh at pobox.com
Tue Dec 6 20:32:25 CST 2016
On 12/6/16 19:05, Dave McGuire wrote:
> 2.3 ran in short spurts between crashes. 2.4 ran in longer spurts
> between crashes. During a good time, 2.4 would stay up for about two
> whole weeks. Contrast that with the SunOS4 machines on the other side
> of the datacenter which frequently had uptimes measured in multiple years.
> The typical failure mode was kernel panics (usually in the network
> stack but sometimes in device drivers) and hard lockups. There were no
> hardware problems. (i.e., same behavior on 100+ machines)
Based on stories I've read from inside Sun, those early 2.x years marked
a significant change towards fine-grained locking inside the kernel so
that SMP systems could scale, which was a perpetual source of subtle and
serious bugs; and at the same time, engineers were hobbled by a
management structure which frequently overruled them on decisions that
impacted release quality.
As I think someone else also mentioned, 2.5.1 is the first release that
I recall having a good reputation for being reasonably stable at the time.
More information about the rescue