Archives for Opensolaris - Page 3
1 - But limits are things that we need to respect in life;
2 - If you have U$10K and do not know how to handle it, U$10M is not the answer for you. Because one cent is overflow in both cases;
3 - That is the same for computer resources;
4 - ...
That was a simple but nice one... i did see a huge write performance on one of our storages.
Take a look at this slog device (SSD):
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 10494.5 ...
Maybe if i could understand the Oracle's mind, i could learn how to make money. I think that is the key in this whole Oracle/Sun situation:
Java, Dtrace 1, 2, 3, 4, and ZFS creators did leave the company.
Why someone would buy a technology company, with so many ...
DO NOT TRY IT IN PRODUCTION. USE AT YOUR OWN RISK!
Good news... here you can get a little script to enable, disable, and check the disksort flag on your disks (not persistent after reboot, take a look on my other post to a link for how to do it).
Take ...
DO NOT TRY IT IN PRODUCTION. USE AT YOUR OWN RISK!
In my last post i did write about some issues related with disksort:
1) Performance (Latency)
2) Consistency
In my D Script i'm printing the buf sector when the sd driver receives it. So, without sorting.
That's important because i'm ...
Hello there, this will be a long post... so, i think if you have no time to waste, think again before you go ahead.
And, no. I'm not Morpheus, so i cannot offer you the truth. Actually, i can just offer you my doubts. And no pills, i do ...
In my last post about 'Performance', i did talk about a ZFS tuning parameter: zfs_prefetch_disable. And that was a ZFS read parameter...
In this post, we will take a look in another one, with the same 'water to wine' effect. This time with focus on writes...
We have a set ...
As system administrators we need to have some essential info about our servers as a minimum requirement for our job, and identify patterns and obtain knowledge about trends in our workload. And, when we need to use Dtrace, MDB, or need to understand a FMA ereport... we do not ...
Ok, if you are a noob C programmer, you will find this post really fun, serious, it will make you LOL. If you are a noob, really noob 'XYZ' programmer, maybe you find it helpfull... maybe... no. You will LOL too...
So, one more time we have a core file sitting ...
Hello there...
I think you agree that the storage's problem is the READ requests, synchronous by nature. And, as i said many times before, i think the solution for all problems (the answer for all questions ;-) is cache. Many levels, many flavors.
I did read many times about the ...