Re: Major memory leak in DeferredRead

Hi Amos,

   Is there any "definitely lost" record?

Amos Jeffries wrote:
> We seem to have tracked the major leak ( ~1MB per request) down to these:
>
> mem_obj->delayRead(DeferredRead(DeferReader, this, CommRead(fd, buf,
> len, callback)));
>
> Which generate:
>
> ==21688== 1,251,224 bytes in 12,031 blocks are indirectly lost in loss
> record 26 of 30
> ==21688== at 0x4C2260E: malloc (vg_replace_malloc.c:207)
> ==21688== by 0x5C4F07: xmalloc (util.c:506)
> ==21688== by 0x574501: DeferredReadManager::delayRead(DeferredRead
> const&) (SquidNew.h:48)
> ==21688== by 0x547596: StoreEntry::delayAwareRead(int, char*, int,
> RefCount<AsyncCall>) (store.cc:241)
> ==21688== by 0x502C4A: HttpStateData::maybeReadVirginBody()
> (http.cc:1332)
> ==21688== by 0x50150D: HttpStateData::processReplyBody() (http.cc:1301)
> ==21688== by 0x501177: HttpStateData::readReply(CommIoCbParams
> const&) (http.cc:1107)
> ==21688== by 0x578B7A: JobDialer::dial(AsyncCall&) (AsyncJob.cc:215)
> ==21688== by 0x4968D2: AsyncCall::make() (AsyncCall.cc:34)
> ==21688== by 0x495C9F: AsyncCallQueue::fireNext() (AsyncCallQueue.cc:53)
> ==21688== by 0x495E57: AsyncCallQueue::fire() (AsyncCallQueue.cc:39)
> ==21688== by 0x4DAB1B: EventLoop::runOnce() (EventLoop.cc:131)
> ==21688== by 0x4DABF7: EventLoop::run() (EventLoop.cc:95)
> ==21688== by 0x5216B3: main (main.cc:1346)
>
>
> ==23075== 58,552 bytes in 563 blocks are indirectly lost in loss record
> 26 of 30
> ==23075== at 0x4C2260E: malloc (vg_replace_malloc.c:207)
> ==23075== by 0x5C4F07: xmalloc (util.c:506)
> ==23075== by 0x574501: DeferredReadManager::delayRead(DeferredRead
> const&) (SquidNew.h:48)
> ==23075== by 0x547596: StoreEntry::delayAwareRead(int, char*, int,
> RefCount<AsyncCall>) (store.cc:241)
> ==23075== by 0x502C4A: HttpStateData::maybeReadVirginBody()
> (http.cc:1332)
> ==23075== by 0x50150D: HttpStateData::processReplyBody() (http.cc:1301)
> ==23075== by 0x501177: HttpStateData::readReply(CommIoCbParams
> const&) (http.cc:1107)
> ==23075== by 0x578B7A: JobDialer::dial(AsyncCall&) (AsyncJob.cc:215)
> ==23075== by 0x4968D2: AsyncCall::make() (AsyncCall.cc:34)
> ==23075== by 0x495C9F: AsyncCallQueue::fireNext() (AsyncCallQueue.cc:53)
> ==23075== by 0x495E57: AsyncCallQueue::fire() (AsyncCallQueue.cc:39)
> ==23075== by 0x4DAB1B: EventLoop::runOnce() (EventLoop.cc:131)
> ==23075== by 0x4DABF7: EventLoop::run() (EventLoop.cc:95)
> ==23075== by 0x5216B3: main (main.cc:1346)
>
>
>
> I believe its the fact that CommRead is allocating itself a buffer via
> xmalloc().
>
> Is anyone else able to track this out please?
>
>
> Amos
Received on Wed Feb 11 2009 - 19:27:17 MST