Re: Help with JIT talk for tomorrow
Hi all, FYI - I checked with Georges Saab and he thinks there was simply an outage at Santa Clara. Let me know if the page is still down! There is a longer term plan to shift things off the older infrastructure, details TBA. Cheers, Martijn On 9 October 2011 21:59, Krystal Mok rednaxel...@gmail.com wrote: On Mon, Oct 10, 2011 at 3:43 AM, Sebastian Sickelmann sebastian.sickelm...@gmx.de wrote: Unfortunately http://wikis.sun.com/display/HotSpotInternals/Home seems to be down. :-( Same here. I was trying to access it last night and I got redirected to Bug Database instead. ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
Re: Help with JIT talk for tomorrow
The ! means the method has exception handlers. I'm not sure that I understand
Remi's answer. Here's some code from sharedRuntime.cpp. A number of other files
mention PrintCompilation but it's late so I've not sorted out where the main
compile is logged. If it's in compile.cpp I've completely missed it ;-)
if (PrintCompilation) {
ttyLocker ttyl;
tty-print(--- n%s , (method-is_synchronized() ? s : ));
method-print_short_name(tty);
if (method-is_static()) {
tty-print( (static));
}
tty-cr();
}
Regards,
Kirk
On Oct 5, 2011, at 1:47 AM, Charles Oliver Nutter wrote:
Hey all...I'm updating and expanding my talk on C2 and will be posting
some questions. Hopefully there's someone out there who can answer
them :)
First up... given this output from PrintCompilation, what do the !
and n and % mean?
Also, in Java 7 there's now two numbers instead of one at the begining
of the line...what are they?
1401 70 java.util.concurrent.ConcurrentHashMap::hash (49
bytes)
1412 71 java.lang.String::indexOf (7 bytes)
1420 72 ! java.io.BufferedReader::readLine (304 bytes)
1420 73 sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (543 bytes)
1422 42 java.util.zip.ZipCoder::getBytes (192 bytes)
made not entrant
1435 74 n java.lang.Object::hashCode (0 bytes)
1443 29 ! sun.misc.URLClassPath$JarLoader::getResource
(91 bytes) made zombie
1443 25 sun.misc.URLClassPath::getResource (74 bytes)
made zombie
1443 36 sun.misc.URLClassPath::getResource (74 bytes)
made not entrant
1443 43 java.util.zip.ZipCoder::encoder (35 bytes)
made not entrant
1449 75 java.lang.String::endsWith (15 bytes)
16311 % sun.misc.URLClassPath::getResource @ 39 (74 bytes)
1665 76 java.lang.ClassLoader::checkName (43 bytes)
- Charlie
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Re: Help with JIT talk for tomorrow
The ! means the method has exception handlers. I'm not sure that I understand
Remi's answer. Here's some code from sharedRuntime.cpp. A number of other files
mention PrintCompilation but it's late so I've not sorted out where the main
compile is logged. If it's in compile.cpp I've completely missed it ;-)
if (PrintCompilation) {
ttyLocker ttyl;
tty-print(--- n%s , (method-is_synchronized() ? s : ));
method-print_short_name(tty);
if (method-is_static()) {
tty-print( (static));
}
tty-cr();
}
Regards,
Kirk
On Oct 5, 2011, at 1:47 AM, Charles Oliver Nutter wrote:
Hey all...I'm updating and expanding my talk on C2 and will be posting
some questions. Hopefully there's someone out there who can answer
them :)
First up... given this output from PrintCompilation, what do the !
and n and % mean?
Also, in Java 7 there's now two numbers instead of one at the begining
of the line...what are they?
1401 70 java.util.concurrent.ConcurrentHashMap::hash (49
bytes)
1412 71 java.lang.String::indexOf (7 bytes)
1420 72 ! java.io.BufferedReader::readLine (304 bytes)
1420 73 sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (543 bytes)
1422 42 java.util.zip.ZipCoder::getBytes (192 bytes)
made not entrant
1435 74 n java.lang.Object::hashCode (0 bytes)
1443 29 ! sun.misc.URLClassPath$JarLoader::getResource
(91 bytes) made zombie
1443 25 sun.misc.URLClassPath::getResource (74 bytes)
made zombie
1443 36 sun.misc.URLClassPath::getResource (74 bytes)
made not entrant
1443 43 java.util.zip.ZipCoder::encoder (35 bytes)
made not entrant
1449 75 java.lang.String::endsWith (15 bytes)
16311 % sun.misc.URLClassPath::getResource @ 39 (74 bytes)
1665 76 java.lang.ClassLoader::checkName (43 bytes)
- Charlie
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Re: Help with JIT talk for tomorrow
Am 06.10.2011 20:21, schrieb Krystal Mok: Thank you, John ^_^ It looks like I've registered a Sun Online Account before with this email address (rednaxel...@gmail.com mailto:rednaxel...@gmail.com), and the screen name is the same as the email address. Didn't see how I could create an account without having the two being the same, though. I wonder if I'll be getting a lot of spam to this address once I really start using the account... Regards, Kris Mok On Fri, Oct 7, 2011 at 1:19 AM, John Rose john.r.r...@oracle.com mailto:john.r.r...@oracle.com wrote: Sadly, wikis.sun.com http://wikis.sun.com is infested by comment spammers. Adding actual page edit rights is a human-intensive operation. Kris, what's your login (screen name) on wikis.sun.com http://wikis.sun.com? I will try to add you to the editors list for those pages. -- John On Oct 6, 2011, at 7:11 AM, Krystal Mok wrote: Hi Rémi, I asked if or how it could be integrated into the wiki a while ago, too, here: http://mail.openjdk.java.net/pipermail/hotspot-dev/2011-August/004376.html Unfortunately I haven't found a definitive answer to that question yet. Regards, Kris Mok On Thu, Oct 6, 2011 at 9:59 PM, Rémi Forax fo...@univ-mlv.fr mailto:fo...@univ-mlv.fr wrote: On 10/06/2011 03:27 PM, Krystal Mok wrote: I tried to document PrintCompilation a while ago, here: https://gist.github.com/1165804#file_notes.md Hope it helps. Sorry for the late reply, we're in holiday this week here in China. Regards, Kris Mok Wow ! Impressive ! You should update the Hotspot internal wiki http://wikis.sun.com/display/HotSpotInternals/Home John, is it possible ? Rémi On 2011-10-5, at 7:47, Charles Oliver Nutterhead...@headius.com mailto:head...@headius.com wrote: Hey all...I'm updating and expanding my talk on C2 and will be posting some questions. Hopefully there's someone out there who can answer them :) First up... given this output from PrintCompilation, what do the ! and n and % mean? Also, in Java 7 there's now two numbers instead of one at the begining of the line...what are they? 1401 70 java.util.concurrent.ConcurrentHashMap::hash (49 bytes) 1412 71 java.lang.String::indexOf (7 bytes) 1420 72 ! java.io.BufferedReader::readLine (304 bytes) 1420 73 sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (543 bytes) 1422 42 java.util.zip.ZipCoder::getBytes (192 bytes) made not entrant 1435 74 n java.lang.Object::hashCode (0 bytes) 1443 29 ! sun.misc.URLClassPath$JarLoader::getResource (91 bytes) made zombie 1443 25 sun.misc.URLClassPath::getResource (74 bytes) made zombie 1443 36 sun.misc.URLClassPath::getResource (74 bytes) made not entrant 1443 43 java.util.zip.ZipCoder::encoder (35 bytes) made not entrant 1449 75 java.lang.String::endsWith (15 bytes) 16311 % sun.misc.URLClassPath::getResource @ 39 (74 bytes) 1665 76 java.lang.ClassLoader::checkName (43 bytes) - Charlie ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net mailto:mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net mailto:mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net mailto:mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net mailto:mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net mailto:mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev Unfortunately http://wikis.sun.com/display/HotSpotInternals/Home seems to be
Re: Help with JIT talk for tomorrow
On Mon, Oct 10, 2011 at 3:43 AM, Sebastian Sickelmann sebastian.sickelm...@gmx.de wrote: Unfortunately http://wikis.sun.com/display/HotSpotInternals/Home seems to be down. :-( Same here. I was trying to access it last night and I got redirected to Bug Database instead. ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
Re: Help with JIT talk for tomorrow
I tried to document PrintCompilation a while ago, here: https://gist.github.com/1165804#file_notes.md Hope it helps. Sorry for the late reply, we're in holiday this week here in China. Regards, Kris Mok On 2011-10-5, at 7:47, Charles Oliver Nutter head...@headius.com wrote: Hey all...I'm updating and expanding my talk on C2 and will be posting some questions. Hopefully there's someone out there who can answer them :) First up... given this output from PrintCompilation, what do the ! and n and % mean? Also, in Java 7 there's now two numbers instead of one at the begining of the line...what are they? 1401 70 java.util.concurrent.ConcurrentHashMap::hash (49 bytes) 1412 71 java.lang.String::indexOf (7 bytes) 1420 72 ! java.io.BufferedReader::readLine (304 bytes) 1420 73 sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (543 bytes) 1422 42 java.util.zip.ZipCoder::getBytes (192 bytes) made not entrant 1435 74 n java.lang.Object::hashCode (0 bytes) 1443 29 ! sun.misc.URLClassPath$JarLoader::getResource (91 bytes) made zombie 1443 25 sun.misc.URLClassPath::getResource (74 bytes) made zombie 1443 36 sun.misc.URLClassPath::getResource (74 bytes) made not entrant 1443 43 java.util.zip.ZipCoder::encoder (35 bytes) made not entrant 1449 75 java.lang.String::endsWith (15 bytes) 16311 % sun.misc.URLClassPath::getResource @ 39 (74 bytes) 1665 76 java.lang.ClassLoader::checkName (43 bytes) - Charlie ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
Re: Help with JIT talk for tomorrow
On 10/06/2011 03:27 PM, Krystal Mok wrote: I tried to document PrintCompilation a while ago, here: https://gist.github.com/1165804#file_notes.md Hope it helps. Sorry for the late reply, we're in holiday this week here in China. Regards, Kris Mok Wow ! Impressive ! You should update the Hotspot internal wiki http://wikis.sun.com/display/HotSpotInternals/Home John, is it possible ? Rémi On 2011-10-5, at 7:47, Charles Oliver Nutterhead...@headius.com wrote: Hey all...I'm updating and expanding my talk on C2 and will be posting some questions. Hopefully there's someone out there who can answer them :) First up... given this output from PrintCompilation, what do the ! and n and % mean? Also, in Java 7 there's now two numbers instead of one at the begining of the line...what are they? 1401 70 java.util.concurrent.ConcurrentHashMap::hash (49 bytes) 1412 71 java.lang.String::indexOf (7 bytes) 1420 72 ! java.io.BufferedReader::readLine (304 bytes) 1420 73 sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (543 bytes) 1422 42 java.util.zip.ZipCoder::getBytes (192 bytes) made not entrant 1435 74 n java.lang.Object::hashCode (0 bytes) 1443 29 ! sun.misc.URLClassPath$JarLoader::getResource (91 bytes) made zombie 1443 25 sun.misc.URLClassPath::getResource (74 bytes) made zombie 1443 36 sun.misc.URLClassPath::getResource (74 bytes) made not entrant 1443 43 java.util.zip.ZipCoder::encoder (35 bytes) made not entrant 1449 75 java.lang.String::endsWith (15 bytes) 16311 % sun.misc.URLClassPath::getResource @ 39 (74 bytes) 1665 76 java.lang.ClassLoader::checkName (43 bytes) - Charlie ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
Re: Help with JIT talk for tomorrow
Hi Rémi, I asked if or how it could be integrated into the wiki a while ago, too, here: http://mail.openjdk.java.net/pipermail/hotspot-dev/2011-August/004376.html Unfortunately I haven't found a definitive answer to that question yet. Regards, Kris Mok On Thu, Oct 6, 2011 at 9:59 PM, Rémi Forax fo...@univ-mlv.fr wrote: On 10/06/2011 03:27 PM, Krystal Mok wrote: I tried to document PrintCompilation a while ago, here: https://gist.github.com/1165804#file_notes.md Hope it helps. Sorry for the late reply, we're in holiday this week here in China. Regards, Kris Mok Wow ! Impressive ! You should update the Hotspot internal wiki http://wikis.sun.com/display/HotSpotInternals/Home John, is it possible ? Rémi On 2011-10-5, at 7:47, Charles Oliver Nutterhead...@headius.com wrote: Hey all...I'm updating and expanding my talk on C2 and will be posting some questions. Hopefully there's someone out there who can answer them :) First up... given this output from PrintCompilation, what do the ! and n and % mean? Also, in Java 7 there's now two numbers instead of one at the begining of the line...what are they? 1401 70 java.util.concurrent.ConcurrentHashMap::hash (49 bytes) 1412 71 java.lang.String::indexOf (7 bytes) 1420 72 ! java.io.BufferedReader::readLine (304 bytes) 1420 73 sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (543 bytes) 1422 42 java.util.zip.ZipCoder::getBytes (192 bytes) made not entrant 1435 74 n java.lang.Object::hashCode (0 bytes) 1443 29 ! sun.misc.URLClassPath$JarLoader::getResource (91 bytes) made zombie 1443 25 sun.misc.URLClassPath::getResource (74 bytes) made zombie 1443 36 sun.misc.URLClassPath::getResource (74 bytes) made not entrant 1443 43 java.util.zip.ZipCoder::encoder (35 bytes) made not entrant 1449 75 java.lang.String::endsWith (15 bytes) 16311 % sun.misc.URLClassPath::getResource @ 39 (74 bytes) 1665 76 java.lang.ClassLoader::checkName (43 bytes) - Charlie ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
Re: Help with JIT talk for tomorrow
Sadly, wikis.sun.com is infested by comment spammers. Adding actual page edit rights is a human-intensive operation. Kris, what's your login (screen name) on wikis.sun.com? I will try to add you to the editors list for those pages. -- John On Oct 6, 2011, at 7:11 AM, Krystal Mok wrote: Hi Rémi, I asked if or how it could be integrated into the wiki a while ago, too, here: http://mail.openjdk.java.net/pipermail/hotspot-dev/2011-August/004376.html Unfortunately I haven't found a definitive answer to that question yet. Regards, Kris Mok On Thu, Oct 6, 2011 at 9:59 PM, Rémi Forax fo...@univ-mlv.fr wrote: On 10/06/2011 03:27 PM, Krystal Mok wrote: I tried to document PrintCompilation a while ago, here: https://gist.github.com/1165804#file_notes.md Hope it helps. Sorry for the late reply, we're in holiday this week here in China. Regards, Kris Mok Wow ! Impressive ! You should update the Hotspot internal wiki http://wikis.sun.com/display/HotSpotInternals/Home John, is it possible ? Rémi On 2011-10-5, at 7:47, Charles Oliver Nutterhead...@headius.com wrote: Hey all...I'm updating and expanding my talk on C2 and will be posting some questions. Hopefully there's someone out there who can answer them :) First up... given this output from PrintCompilation, what do the ! and n and % mean? Also, in Java 7 there's now two numbers instead of one at the begining of the line...what are they? 1401 70 java.util.concurrent.ConcurrentHashMap::hash (49 bytes) 1412 71 java.lang.String::indexOf (7 bytes) 1420 72 ! java.io.BufferedReader::readLine (304 bytes) 1420 73 sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (543 bytes) 1422 42 java.util.zip.ZipCoder::getBytes (192 bytes) made not entrant 1435 74 n java.lang.Object::hashCode (0 bytes) 1443 29 ! sun.misc.URLClassPath$JarLoader::getResource (91 bytes) made zombie 1443 25 sun.misc.URLClassPath::getResource (74 bytes) made zombie 1443 36 sun.misc.URLClassPath::getResource (74 bytes) made not entrant 1443 43 java.util.zip.ZipCoder::encoder (35 bytes) made not entrant 1449 75 java.lang.String::endsWith (15 bytes) 16311 % sun.misc.URLClassPath::getResource @ 39 (74 bytes) 1665 76 java.lang.ClassLoader::checkName (43 bytes) - Charlie ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
Re: Help with JIT talk for tomorrow
Thank you, John ^_^ It looks like I've registered a Sun Online Account before with this email address (rednaxel...@gmail.com), and the screen name is the same as the email address. Didn't see how I could create an account without having the two being the same, though. I wonder if I'll be getting a lot of spam to this address once I really start using the account... Regards, Kris Mok On Fri, Oct 7, 2011 at 1:19 AM, John Rose john.r.r...@oracle.com wrote: Sadly, wikis.sun.com is infested by comment spammers. Adding actual page edit rights is a human-intensive operation. Kris, what's your login (screen name) on wikis.sun.com? I will try to add you to the editors list for those pages. -- John On Oct 6, 2011, at 7:11 AM, Krystal Mok wrote: Hi Rémi, I asked if or how it could be integrated into the wiki a while ago, too, here: http://mail.openjdk.java.net/pipermail/hotspot-dev/2011-August/004376.html Unfortunately I haven't found a definitive answer to that question yet. Regards, Kris Mok On Thu, Oct 6, 2011 at 9:59 PM, Rémi Forax fo...@univ-mlv.fr wrote: On 10/06/2011 03:27 PM, Krystal Mok wrote: I tried to document PrintCompilation a while ago, here: https://gist.github.com/1165804#file_notes.md Hope it helps. Sorry for the late reply, we're in holiday this week here in China. Regards, Kris Mok Wow ! Impressive ! You should update the Hotspot internal wiki http://wikis.sun.com/display/HotSpotInternals/Home John, is it possible ? Rémi On 2011-10-5, at 7:47, Charles Oliver Nutterhead...@headius.com wrote: Hey all...I'm updating and expanding my talk on C2 and will be posting some questions. Hopefully there's someone out there who can answer them :) First up... given this output from PrintCompilation, what do the ! and n and % mean? Also, in Java 7 there's now two numbers instead of one at the begining of the line...what are they? 1401 70 java.util.concurrent.ConcurrentHashMap::hash (49 bytes) 1412 71 java.lang.String::indexOf (7 bytes) 1420 72 ! java.io.BufferedReader::readLine (304 bytes) 1420 73 sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (543 bytes) 1422 42 java.util.zip.ZipCoder::getBytes (192 bytes) made not entrant 1435 74 n java.lang.Object::hashCode (0 bytes) 1443 29 ! sun.misc.URLClassPath$JarLoader::getResource (91 bytes) made zombie 1443 25 sun.misc.URLClassPath::getResource (74 bytes) made zombie 1443 36 sun.misc.URLClassPath::getResource (74 bytes) made not entrant 1443 43 java.util.zip.ZipCoder::encoder (35 bytes) made not entrant 1449 75 java.lang.String::endsWith (15 bytes) 16311 % sun.misc.URLClassPath::getResource @ 39 (74 bytes) 1665 76 java.lang.ClassLoader::checkName (43 bytes) - Charlie ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
Re: Help with JIT talk for tomorrow
Thanks for the answers everyone. I updated slides quickly before my
talk to mention the ms times, exception-handling, and OSR sigils.
I'll continue revising the talk over time and adding information.
Probably will add LogCompilation to the list of flags I cover, since
it gives more information than PrintInlining.
- Charlie
On Wed, Oct 5, 2011 at 1:22 AM, Charles K Pepperdine k...@kodewerk.com wrote:
The ! means the method has exception handlers. I'm not sure that I
understand Remi's answer. Here's some code from sharedRuntime.cpp. A number
of other files mention PrintCompilation but it's late so I've not sorted out
where the main compile is logged. If it's in compile.cpp I've completely
missed it ;-)
if (PrintCompilation) {
ttyLocker ttyl;
tty-print(--- n%s , (method-is_synchronized() ? s : ));
method-print_short_name(tty);
if (method-is_static()) {
tty-print( (static));
}
tty-cr();
}
Regards,
Kirk
On Oct 5, 2011, at 1:47 AM, Charles Oliver Nutter wrote:
Hey all...I'm updating and expanding my talk on C2 and will be posting
some questions. Hopefully there's someone out there who can answer
them :)
First up... given this output from PrintCompilation, what do the !
and n and % mean?
Also, in Java 7 there's now two numbers instead of one at the begining
of the line...what are they?
1401 70 java.util.concurrent.ConcurrentHashMap::hash (49
bytes)
1412 71 java.lang.String::indexOf (7 bytes)
1420 72 ! java.io.BufferedReader::readLine (304 bytes)
1420 73 sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (543
bytes)
1422 42 java.util.zip.ZipCoder::getBytes (192 bytes)
made not entrant
1435 74 n java.lang.Object::hashCode (0 bytes)
1443 29 ! sun.misc.URLClassPath$JarLoader::getResource
(91 bytes) made zombie
1443 25 sun.misc.URLClassPath::getResource (74 bytes)
made zombie
1443 36 sun.misc.URLClassPath::getResource (74 bytes)
made not entrant
1443 43 java.util.zip.ZipCoder::encoder (35 bytes)
made not entrant
1449 75 java.lang.String::endsWith (15 bytes)
1631 1 % sun.misc.URLClassPath::getResource @ 39 (74 bytes)
1665 76 java.lang.ClassLoader::checkName (43 bytes)
- Charlie
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Help with JIT talk for tomorrow
Hey all...I'm updating and expanding my talk on C2 and will be posting some questions. Hopefully there's someone out there who can answer them :) First up... given this output from PrintCompilation, what do the ! and n and % mean? Also, in Java 7 there's now two numbers instead of one at the begining of the line...what are they? 1401 70 java.util.concurrent.ConcurrentHashMap::hash (49 bytes) 1412 71 java.lang.String::indexOf (7 bytes) 1420 72 ! java.io.BufferedReader::readLine (304 bytes) 1420 73 sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (543 bytes) 1422 42 java.util.zip.ZipCoder::getBytes (192 bytes) made not entrant 1435 74 n java.lang.Object::hashCode (0 bytes) 1443 29 ! sun.misc.URLClassPath$JarLoader::getResource (91 bytes) made zombie 1443 25 sun.misc.URLClassPath::getResource (74 bytes) made zombie 1443 36 sun.misc.URLClassPath::getResource (74 bytes) made not entrant 1443 43 java.util.zip.ZipCoder::encoder (35 bytes) made not entrant 1449 75 java.lang.String::endsWith (15 bytes) 16311 % sun.misc.URLClassPath::getResource @ 39 (74 bytes) 1665 76 java.lang.ClassLoader::checkName (43 bytes) - Charlie ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
Re: Help with JIT talk for tomorrow
This may help http://www.java.net/external?url=http://blog.joda.org/2011/08/printcompilation-jvm-flag.html___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
Re: Help with JIT talk for tomorrow
On Oct 4, 2011, at 4:47 PM, Charles Oliver Nutter wrote: Hey all...I'm updating and expanding my talk on C2 and will be posting some questions. Hopefully there's someone out there who can answer them :) Fire away. First up... given this output from PrintCompilation, what do the ! and n and % mean? ! means the method is synchronized, n means it's a native method wrapper compile, and % means it's an OSR compile. Also, in Java 7 there's now two numbers instead of one at the begining of the line...what are they? It's a timestamp in ms since the start of the VM. tom 1401 70 java.util.concurrent.ConcurrentHashMap::hash (49 bytes) 1412 71 java.lang.String::indexOf (7 bytes) 1420 72 ! java.io.BufferedReader::readLine (304 bytes) 1420 73 sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (543 bytes) 1422 42 java.util.zip.ZipCoder::getBytes (192 bytes) made not entrant 1435 74 n java.lang.Object::hashCode (0 bytes) 1443 29 ! sun.misc.URLClassPath$JarLoader::getResource (91 bytes) made zombie 1443 25 sun.misc.URLClassPath::getResource (74 bytes) made zombie 1443 36 sun.misc.URLClassPath::getResource (74 bytes) made not entrant 1443 43 java.util.zip.ZipCoder::encoder (35 bytes) made not entrant 1449 75 java.lang.String::endsWith (15 bytes) 16311 % sun.misc.URLClassPath::getResource @ 39 (74 bytes) 1665 76 java.lang.ClassLoader::checkName (43 bytes) - Charlie ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
Re: Help with JIT talk for tomorrow
Tom~ On Tue, Oct 4, 2011 at 8:04 PM, Tom Rodriguez tom.rodrig...@oracle.comwrote: First up... given this output from PrintCompilation, what do the ! and n and % mean? ! means the method is synchronized, n means it's a native method wrapper compile, and % means it's an OSR compile. Your answer and the website linked to disagree. According to the website: !Method has exception handlers sMethod declared as synchronized Can you verify which is correct just so we don't have misinformation running around? Matt ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
Re: Help with JIT talk for tomorrow
On Oct 4, 2011, at 5:12 PM, Matt Fowles wrote: Tom~ On Tue, Oct 4, 2011 at 8:04 PM, Tom Rodriguez tom.rodrig...@oracle.com wrote: First up... given this output from PrintCompilation, what do the ! and n and % mean? ! means the method is synchronized, n means it's a native method wrapper compile, and % means it's an OSR compile. Your answer and the website linked to disagree. According to the website: !Method has exception handlers sMethod declared as synchronized Can you verify which is correct just so we don't have misinformation running around? Oops. I think I'd trust the written one more than my memory and a quick look at the sources confirms that. const char compile_type = is_osr_method ? '%' : ' '; const char sync_char = is_synchronized ? 's' : ' '; const char exception_char = has_exception_handler ? '!' : ' '; const char blocking_char = is_blocking ? 'b' : ' '; const char native_char= is_native ? 'n' : ' '; Thanks for correcting me. Personally I've never understood why we bothered to print anything besides n and %. tom Matt ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev ___ mlvm-dev mailing list mlvm-dev@openjdk.java.net http://mail.openjdk.java.net/mailman/listinfo/mlvm-dev
